NEWSLETTER 4+5/2025 05.05.2025

NEW PARTNERS OF SHARK-REFERENCES

Would you like to become a shark-reference partner? Please contact us per E-mail!

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Upcoming Meetings:

INTERNATIONAL BASKING SHARK CONFERENCE | 2025

There has been increasing global interest in basking shark distribution, population status, and sightings trends in recent decades, coinciding with new technologies and methods for monitoring highly mobile marine species. Additionally, there is growing consensus that international coordination is required to manage and conserve this endangered species. The IBSG and the National Parks and Wildlife Service therefore plan to organise and host an International Basking Shark Conference in Galway, Ireland from May 9 - 11, 2025, to coincide with the basking shark season here. The goals of this conference are interdisciplinary:

            1) to create a global discussion of ongoing research
            2) to encourage international collaboration and data sharing
            3) to highlight the unique cultural history of the species.

To this end, while we will prioritize the attendance of researchers, the conference will be accessible to non-scientists as well. 

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The annual meeting of the Asian Society of Ichthyologists and the Indo-Pacific Fish Conference will return to their regular schedule post-COVID-19. The most recent meetings were successfully held at Universiti Sains Malaysia in Penang, Malaysia, on May 28-29, 2024, and at the University of Auckland, New Zealand, on November 20-24, 2023. We are pleased to inform you that the upcoming joint conference, combining these two prestigious ichthyological events, will take place in Taipei, Taiwan, from June 9-13, 2025.

On behalf of the organizing committee, we welcome ichthyologists from around the world who are interested in sharing research about the systematics and ecology of Asian and Indo-Pacific fishes, including topics such as evolution, biogeography, taxonomy, ecology, biology, sustainable fisheries, and conservation. We look forward to the opportunity for the ASI to meet with the IPFC and are especially happy to do so in Taipei. The conference will provide an excellent opportunity to share the latest research results, develop collaborations, and promote research.

more information
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XI Simposio Nacional de Tiburones y Rayas

20 - 24 October  2025

La Sociedad Mexicana de Peces Cartilaginosos, A. C. (SOMEPEC), en coordinación con el
Caracol Museo de Ciencias y la Facultad de Ciencias Marinas de la Universidad Autónoma de
Baja California, campus Ensenada, en el marco del XI Simposium Nacional de Tiburones y
Rayas, convocan a participar en la presentación de trabajos en las áreas de Pesquerías,
Comportamiento, Migraciones, Taxonomía, Alimentación, Reproducción, Edad y Crecimiento,
Ecología, Toxicología, Parasitología, Genética, Conservación, y cualquier otro tema vinculado
con el estudio de los condrictios.

Lugar y fecha
Ensenada, Baja California, México, teniendo como sedes el Caracol Museo de Ciencias y la
Facultad de Ciencias Marinas de la Universidad Autónoma de Baja California, del 20 al
24 de octubre de 2025. Los días 20 y 21 se impartirán cursos especializados para el estudio
de los condrictios, en la Facultad de Ciencias Marinas y del 22 al 24 corresponderán a la
presentación de conferencias magistrales y de trabajos de los asistentes en las diferentes
modalidades.

 

Most popular posts at our Shark References Facebook page:

Nr. 1 (69 Likes/Emojis, 21 Shares):

New described hound shark species!
Bineesh, K.K. & Beura, S. & Das, M. & Nashad, M. & Akhilesh, K.V. 2025 Description of a new species of hound shark of the genus Iago (Carcharhiniformes: Triakidae) from the northern Indian Ocean. Indian Journal of Fisheries, 72(1), 18–28
https://shark-references.com/.../view/Iago-gopalakrishnani
In this study, we describe a new species of hound shark, Iago gopalakrishnani sp. nov. from the deep waters of eastern Arabian Sea, India. Iago gopalakrishnani sp. nov. is distinct in its dark chocolate brown to blackish colouration and low fins; pre-oral length 4.7–6% TL, 22.4-25% head length; first dorsal height 5.8-7% TL, first dorsal length 10.6–14.1% TL, first dorsal base length 6.7-9.8% TL, second dorsal length 8.9-10.9% TL and vertebral counts 117-123. Iago gopalakrishnani sp. nov. is genetically distinct from congeners. COI based analysis of Iago gopalakrishnani sp. nov formed a distinct clade in phylogenetic reconstruction with a genetic distance of 4.5-5.2% when comparing K2P parameters with congeners.
Thanks to K.V. Akhilesh for sharing! image credit: Bineesh et al 2025
#newspecies #shark #sharks


Nr. 2 (68 Likes/Emojis, 22 Shares):

open access!

Schiønning, M.K. & Marcús, L. & Veríssimo, A. & Thomasberger, A. & Ballyram, S.A. & Försterra, G. & Concha, F.J. 2025 Sharks and skates in the Comau Fjord, northern Patagonia, Chile: an elasmobranch species checklist with biological aspects. Journal of the Marine Biological Association of the United Kingdom, 105, Article e44
https://www.cambridge.org/.../F03AEAA078E4E8D88DC956D0E77...

This study investigates the biodiversity of elasmobranchs in the Comau Fjord over a period of 6 months by combining morphological and molecular data. In total, 309 specimens within a radius of 7.5 km were recorded, belonging to six families and nine species: Hexanchus griseus (77.5–178 cm LT), Notorynchus cepedianus (180.6 cm LT), Schroederichthys bivius (35–65.2 cm LT), Scymnodon macracanthus (37.3 cm LT), Centrophorus squamosus (87.4 cm LT), Deania calceus (58.3–98.6 cm LT), Squalus acanthias (25.5–101.1 cm LT), Dipturus chilensis (62.9–152 cm LT), and Dipturus trachyderma (69.8–194 cm LT). This included records of three species previously unknown in the fjord and was equivalent to nearly 20% of the elasmobranch richness found in Southern Chile.

image by the authors!

#sharks #shark #fjord #chile


Nr. 3 (59 Likes/Emojis, 18 Shares):

New open access paper!
Fossil specimens of chondrichthyans collected by the senior author and colleages from around the Japanese islands are reported geochronologically from older (Cisuralian-Guadalupain of Early-Middle Permian) to younger (Late Pleistocene), and geographically from north (Ashibetsu, Hokkaido) to south (Uruma, Okinawa). The total number of about 8,000 cheek teeth from localities that counts 76 with detailed descriptions and 19 with occurrence records.
Tanaka, T. & Kohno, N. 2025 Paleozoic, Mesozoic and Cenozoic Chondrichthyes from the Japanese Islands. National Museum of Nature and Science Monographs, 56, 1–184
https://www.kahaku.go.jp/.../download/56/monograph56.pdf
Thanks to Takeshi Tanaka for sharing!
#fossilsharkteeth #fossilsharktooth #sharkteeth #sharktooth

New Images

Missing papers:

Many thanks to all friends of shark-references, who sent us some missing papers last month!

Shark-References would kindly like to ask you for your contribution to this project.

At the moment we are looking for some of the following papers:


Extinct Chondrichthyes:

new entry:  Silva, E.M. & Gallo, V. (2002): New occurrence of Myliobatiformes (Chondrichthyes: Batoidea) in the Maria Farinha Formation, Paleocene of the Pernambuoc-Paraiba Basin, Northeastern Brazil. Boletim do Museu Nacional, 65, 1–11
new entry:  Santos, R.S.  (1968): A paleoictiofauna da formacao Santana - Euselachii. Anais da Academia Brasileira de Ciências, 40(4), 491–497
new entry:  Wetzel, W. (1930): Die Quiriquina-Schichten als Sediment und Paläontologisches Archiv. Palaeontographica, 73(1-6), 49–106



Extant Chondrichthyes:

new entry:  Gosztonyi, A.E. (1973) Sobre el dimorfismo sexual secundario en Halaelurus bivius (Müller y Henle, 1841) Garman 1913 (Elasmobranchii, Scyliorhinidae) en aguas Pagagonico-Fueguinas. Physis, A, 32(85), 317–323

new entry:  Pokapunt, W,J. & Tantivala, A. & Munprasit & Samrankitdamrong, P.  (1983) Some deep-sea fishes in the Andaman Sea. Exploratory Fishing Division, Department of Fisheries, Bangkok, 70 pp.


Please support www.shark-references.com and send missing papers (not listed papers or papers without the info-symbol) to juergen.pollerspoeck@shark-references.com or nicolas.straube@shark-references.com

Bineesh, K.K. & Beura, S. & Das, M. & Nashad, M. & Akhilesh, K.V. 

Extinct Chondrichthyes:

Duffin, C.J. & Batchelor, T.J. (2025): New Neoselachian (Chondrichthyes, Elasmobranchii) teeth from the Lower Greensand Group (Early Cretaceous) of southern England. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen, 314(1), 1–27
New species: Antrigoulia guinoti, Pseudorhina magnapraecinctorium, Pseudorhina carinata, Pseudorhina clopellensis
Abstract: The isolated teeth of some new neoselachian chondrichthyans are described from the Lower Woburn Sands at Clophill (Bedfordshire, UK) and the Redhill Sands at Nutfield (Surrey, UK); the deposits at the two localities are roughly coeval and belong to the Lower Greensand Group (Aptian to possibly Early Albian, Early Cretaceous). Teeth of Antrigoulia guinoti sp. nov. are only the second record of the genus, otherwise known by A. circumplicata from the Valanginian of southern France. The teeth of Synechodus sp. are left in open nomenclature because of the poor preservation of the specimens but may well represent a new species. Pseudorhina magnapraecinctorium sp. nov. and P. carinata sp. nov. are both recorded from Clophill only, whilst P. clopellensis sp. nov. and Pseudorhina sp. are recorded from both assemblages.

Brito, P.M. & Veiga, I.M. & Dutheil, D.B. &  Bergqvist, L.P. (2025): First occurrence of Distobatus Werner, 1989 (Elasmobranchii: Hybodontiformes) in the middle Cretaceous (Albian–Cenomanian) of Brazil: Taxonomic and biogeographical implications. Cretaceous Research, 171, Article 106119
New species: Distobatus potiguarense
Abstract: Fossil teeth from the middle Cretaceous (Albian–Cenomanian) Açu Formation of the Potiguar Basin, Northeastern Brazil, previously described as Tribodus sp., are redescribed as a new species of the hybodontiform shark genus Distobatus Werner, 1989. The new taxon, Distobatus potiguarense sp. nov., is based on crown ornamentation, formed by delicate parallel ridges in the form of waves that follow each other, in occlusal view. The presence of Distobatus in the Açu Formation represents the westernmost distribution of this taxon and confirms the taxonomic and environmental similarity between the faunas found in North Africa and Northeastern Brazil. The new species confirms the existence of Distobatidae in South America immediately after the separation of the northern part of Gondwana.


Feichtinger, I. & Beaury, B. & Ćorić, S. & Straube, N. & Harzhauser, M. & Kranner, M. & Auer, G. & Guinot, G. & Pollerspöck, J. (2025): A new deep-marine elasmobranch fauna from the Late Cretaceous of Bergen (Bavaria, Germany) dominated by squaliform sharks. Paläontologische Zeitschrift, 99, 71–93
New species: Centrodeania perchensis, Palaeocentroscymnus bavaricus
Abstract: This study reports on elasmobranch teeth recovered from bulk-sampling of a deep-marine succession deposited in the northern Tethyan Realm (Bergen, Germany). Analyses of the complex geological setting of the succession revealed Upper Maastrichtian (UC20c) sediments at the base of the section, which are overlain by stratigraphically older deposits of the Lower—Middle Campanian (UC14b-UC15b). The Campanian section shows a moderate fossil concentration accompanied by low diversity. A shift from Etmopteridae in the Campanian to Somniosidae, Centrophoridae, and Squalidae in the Maastrichtian is observed, indicating a shallowing upward trend of the environmental setting. Among the Maastrichtian assemblages, fluctuations in diversity and changes in the total proportion of different squaliform families are observed. Extensive bulk-sampling of three selected horizons (A1, A2, A5) enabled the description of two new species, Centrodeania perchensis sp. nov. and Palaeocentroscymnus bavaricus sp. nov., which extends the fossil record of both genera from the Paleogene to the Cretaceous. A faunistic comparison between this newly described locality and the Waidach section in Austria (uppermost Maastrichtian—lowermost Danian) highlights the potential of continuous bulk-sampling of palaeogeographically close settings to decipher spatial differences in species distribution. This is particularly important because the newly described fauna of Bergen was deposited in close temporal proximity to the end-Cretaceous mass extinction event. Based on the new records of the genera Palaeocentroscymnus and Centrodeania in the Maastrichtian at Bergen, which were hitherto only know from the Danian at Waidach, both genera can be considered as survivors of the end-Cretaceous extinction event.


Ota, A. & Nishimura, T. & Kobayashi, Y. & Moriki, K. (2025): Callorhinchus orientalis sp. nov., a new callorhinchid from the Upper Cretaceous Hakobuchi Formation, Yezo Group, Hokkaido, Japan. Paleontological Research, 29, 54–63
New species: Callorhinchus orientalis
Abstract: Herein, we describe Callorhinchus orientalis sp. nov., an extinct callorhinchid chondrichthyan species found in the lower Maastrichtian deposits of the Hakobuchi Formation in Hobetsu, Hokkaido, northern Japan. This species is the first record of the genus Callorhinchus from the northern Pacific region, filling the biogeographical gap and implying survival beyond the Cretaceous/Paleogene extinction event because of the broad distribution of the genus. A comparison of Maastrichtian Callorhinchus species, including C. orientalis sp. nov., and Danian species indicates a potential period of temporal dwarfing within the genus across this extinction event.

Dearden, R.P. & Johanson, Z. & O’Neill, H.L. & Miles, K. & Bernard, E.L. & Clark, B. & Underwood, C.J. & Rücklin, M. (2025): Three-dimensional fossils of a Cretaceous collared carpet shark (Parascylliidae, Orectolobiformes) shed light on skeletal evolution in galeomorphs. Royal Society Open Science, 12, Article 242011
New species: Pararhincodon torquis
Abstract: A rich fossil record of teeth shows that many living shark families’ origins lie deep in the Mesozoic. Skeletal fossils of the sharks to whom these teeth belonged are far rarer and when they are preserved are often flattened, hindering understanding of the evolutionary radiation of living shark groups. Here we use computed tomography to describe two articulated Upper Cretaceous shark skeletons from the Chalk of the UK preserving three-dimensional neurocrania, visceral cartilages, pectoral skeletons and vertebrae. These fossils display skeletal anatomies characteristic of the Parascylliidae, a family of Orectolobiformes now endemic to Australia and the Indo Pacific. However, they differ in having a more heavily mineralized braincase and a tri-basal pectoral fin endoskeleton, while their teeth can be attributed to a new species of the problematic taxon Pararhincodon. Phylogenetic analysis of these new fossils confirms that Pararhincodon is a stem-group parascylliid, providing insight into the evolution of parascylliids’ distinctive anatomy during the late Mesozoic–Cenozoic shift in orectolobiform biodiversity from the Northern Atlantic to the Indo Pacific. Meanwhile both Pararhincodon and extant parascylliids have a distinctive vertebral morphology previously described only in Carcharhiniformes, contributing a skeletal perspective to the picture emerging from macroevolutionary analyses of coastal, small-bodied origins for galeomorphs.


Parasites:
Panchah, H.K. & Haseli, M. (2025): Scyphophyllidium garshai n. sp. (Cestoda: Phyllobothriidea) from the Grey Sharpnose Shark, Rhizoprionodon oligolinx Springer, 1964, in the Persian Gulf. Acta Parasitologica, 70(2), Article 65
New species: Scyphophyllidium garshai
Abstract: The description of S. garshai n. sp. from Rhizoprionodon oligolinx confirms that the species of the genus Scyphophyllidium possessing six bothridial facial loculi occur not only in sharks of the genus Scoliodon but also in Rhizoprionodon. The status of the microtriches is discussed. The uniformity in morphology, whether in microstructure or macrostructure, suggests that the two species of the genus with six bothridial facial loculi have the potential to be considered as a separate category within the genus.

Omrani, S. & Golzarianpour, K. & Malek, M. & Golestaninasab, M. & Seiedy, M. (2025): Two new marine species of Rhinebothrium (Cestoda: Rhinebothriidea) from stingrays from the Persian Gulf and Gulf of Oman. Journal of Helminthology, 99, Article e18
New species: Rhinebothrium gossi, Rhinebothrium palmeri
Abstract: The genus Rhinebothrium (Cestoda: Rhinebothriidea) comprises tapeworm species parasitizing elasmobranch hosts, particularly batoids. Despite numerous recent findings regarding the ecological importance of marine fish parasites throughout the world, the biodiversity of cestodes inhabiting fishes of the Persian Gulf and the Gulf of Oman remains understudied. Here, two new species of Rhinebothrium from stingrays from the Persian Gulf and Gulf of Oman are described: Rhinebothrium gossi sp. nov. and Rhinebothrium palmeri sp. nov. from Maculabatis arabica and Maculabatis randalli, respectively. However, each new cestode species is found with a lower frequency in the other host species, too. These new species were already subjected to a molecular analysis and the revealed genetic distinctiveness requires detailed morphological examinations at the species level. A combination of morphomeristic characteristics including body size, scolex features, proglottid morphology, and reproductive structures distinguish the new species from the other congeners. Although these new species are morphologically similar, however, they differ from each other in the number of testes (6–8 and 8–14), and bothridial loculi (50 and 42 in R. gossi sp. nov. and R. palmeri sp. nov., respectively). These findings contribute to our understanding of marine cestode diversity and underscore the importance of further research in this ecologically significant region.

Guillemin, T.A. & Mcnab, J.M. & Williamson, J.E. & Bruce, N.L. (2025): A new species of Aega Leach, 1816 (Isopoda: Aegidae), a micro-predator of elasmobranchs from eastern Tasmania, Australia. Zootaxa, 5601(3), 589–599
New species: Aega serricauda
Abstract: Aega serricauda sp. nov., from southeastern Australian waters, belongs to a group of species within Aega that is characterised by a strongly flattened antennula peduncle, a prominent seta opposing the dactylus on pereopods 2 or 2 and 3, and moderately to strongly serrate margins to the pleotelson and uropods. In addition, species in this group have elongate bodies with subparallel margins. Aega serricauda is characterized by the pleotelson being nearly as long (0.97 ratio) as wide, a clearly angled posterior margin (that part that is serrated, with slender and robust setae) that forms an angle of 95° at the apex, lateral margins (the lateral part free of setae) comprising 40% or pleotelson length, and uropodal rami extending to or slightly beyond the pleotelson posterior margin. A. serricauda sp. nov. has been recorded in waters off eastern Tasmania and was collected from the surface of three species of elasmobranch: Galeorhinus galeus (school shark), Squalus acanthias (spiny dogfish) and Dipterus cerva (white spotted skate).

PLEASE send your new papers to
juergen.pollerspoeck@shark-references.com or 
nicolas.straube@shark-references.com   

Latest Research Articles

Ahumada, M. & Apablaza, P. & Queirolo, D. & Wiff, R. & Flores, A. (2025) Movements and behavior of satellite-tagged yellownose skate (Dipturus chilensis) and roughskin skate (Dipturus trachyderma) in southern Chile. Latin American Journal of Aquatic Research, 53(1), 56–71 https://dx.doi.org/10.3856/vol53-issue1-fulltext-3221
Alghozali, F.A. & Hanifah, A. & Gustianto, M.W.D. & Nadia, M. & Qur'rohman, T. & Niloperbowo, K.A. & Suyanto, D.P. & Ichsan, M. & Prasetyo, A. & Himawan, M.R. & Booth, H. (2025) Fishers' interactions with endangered rhinorays in Karimunjawa National Park, and factors influencing willingness to engage in pro-conservation behavior. Conservation Science and Practice, 7(4), Article e70038 https://dx.doi.org/10.1111/csp2.70038
Berio, F. & Morerod, C. & Di Santo, V. (2025) Speed-dependent locomotor patterns during steady swimming in a demersal shark. Journal of Fish Biology, in press https://dx.doi.org/10.1111/jfb.70043
Bineesh, K.K. & Beura, S. & Das, M. & Nashad, M. & Akhilesh, K.V. (2025) Description of a new species of hound shark of the genus Iago (Carcharhiniformes: Triakidae) from the northern Indian Ocean. Indian Journal of Fisheries, 72(1), 18–28 https://dx.doi.org/10.21077/ijf.2025.72.1.152519-03
Brito-Osuna, J. & Blanco-Parra, M.D. & Pereira-Corona, A. & Serrano-Flores, F. & Pérez-Jiménez, J.C. & Niño-Torres, C.A. (2025) Heavy metals content in whitespotted eagle ray (Aetobatus narinari, Myliobatidae) and health risk assessment for consumers in the southern gulf of Mexico. Marine Pollution Bulletin, 215, Article 117852 https://dx.doi.org/10.1016/j.marpolbul.2025.117852
Cañizares-Cooz, D. & García-Párraga, D. & Rubio-Langre, S. & Encinas, T. & Morón-Elorza, P. (2025) Voriconazole Pharmacokinetics Administered at 4 mg/kg IM and IV in Nursehound Sharks (Scyliorhinus stellaris) Under Human Care (vol 12, 17, 2025). Veterinary Sciences, 12(3), Article 281 https://dx.doi.org/10.3390/vetsci12030281
Carrasco-Puig, P. & Colmenero, A.I. & Giralt, S. & Garrido Sánchez, L. & López-Caro, J. & Ruiz-Jarillo, R. & Fernandez-Guiberteau, D. & Ruiz-Olmo, J. & Barría, C. (2025) First stress-induced parturition events of spinetail devil rays (Mobula mobular) recorded in the western Mediterranean Sea. Environmental Biology of Fishes, in press https://dx.doi.org/10.1007/s10641-025-01692-w
Casselberry, G.A. & Skomal, G.B. & Griffin, L.P. & Brownscombe, J.W. & Finn, J.T. & Dello Russo, J. & Filous, A. & Holder, P.E. & Daughtry, B. & Kneebone, J. & Morley, D. & Lowerre-Barbieri, S.K. & Anderson, B.N. & Sulikowski, J. & Cooke, S.J. & Danylchuk, A.J. (2025) Migratory patterns and seasonal habitat use of great hammerhead sharks (Sphyrna mokarran) in the southeastern United States. Journal of Fish Biology, in press https://dx.doi.org/10.1111/jfb.70039
Clarac, F. & Gimeno, A.S. & Quilhac, A. & Herrel, A. & Grimal, Q. & Pradel, A. (2025) An integrative model of chimaera jaw links mechanical stress to localized cartilage mineralization. Comptes Rendus Palevol, 24(8), 123–137 https://dx.doi.org/10.5852/cr-palevol2025v24a8
Claassens, L. & Giddens, J. & Pinto, J.G. & Delaney, D. & Ebert, D.A. (2025) Lost and found: discovery of the painted swellshark Cephaloscyllium pictum in Timor-Leste. Oryx, in press https://dx.doi.org/10.1017/S0030605324001777
Cook, N.D. & Samperiz, A. & Andersen, M. & Inglis, E. & Millet, M.A. & Cable, J. & Perkins, S.E. (2025) Vertebral elemental composition reveals ontogenetic changes in habitat use in a Northeast Atlantic mesopredator shark. Estuarine Coastal and Shelf Science, 319, Article 109255 https://dx.doi.org/10.1016/j.ecss.2025.109255
Davis, M.M. & Winton, M.V. & Mohan, J.A. & Iafrate, J.D. & Sulikowski, J.A. & Jenner, B.P. & Novak, A.J. & Migneco, V. & Curtis, T.H. & Michalove, C. & Skomal, G.B. (2025) Early insights into the seasonal and spatial distribution of white sharks (Carcharodon carcharias) along the Maine coastline. Frontiers In Marine Science, 12, Article 1535123 https://dx.doi.org/10.3389/fmars.2025.1535123
de Pinho, J.V. & Willmer, I.Q. & Lopes, A.P. & Fonsêca, R. & Saint'Pierre, T.D. & Charvet, P. & Tomas, A.R.G. & Hauser-Davis, R.A. (2025) Metallic Makos: Metal and Metalloid Levels and Human Health Risks Arising from the Consumption of Shortfin Makos (Isurus oxyrinchus) from Southeastern Brazil. Biological Trace Element Research, in press https://dx.doi.org/10.1007/s12011-025-04572-7
Dicken, M.L. & Towner, A. & Mauz, B. & Mauz, R. (2025) Assessing the socio-economic value of shark diving in the Protea Banks Marine Protected Area, South Africa. African Journal of Marine Science, in press https://dx.doi.org/10.2989/1814232X.2024.2446308
Ermakova, G.V. & Meyntser, I.V. & Zaraisky, A.G. & Bayramov, A.V. (2025) Adaptation of the In Situ Hybridization Method for Working with Embryos and Larvae of Modern Representatives of Phylogenetically Ancient Groups of Vertebrates: Lampreys, Cartilaginous Fishes and Sturgeons. Russian Journal of Developmental Biology, 55(5), 284–295 https://dx.doi.org/10.1134/S1062360424700255
Ferone, G.S. & Woodstock, M.S. & Hearn, A. (2025) Random swims: an evaluation of acoustic telemetry thresholds for shark behavior and residency. Animal Biotelemetry, 13(1), Article 12 https://dx.doi.org/10.1186/s40317-025-00409-1
Ferragut-Perello, F. & Valls, M. & Ramírez-Amaro, S. & Cortes-Pujol, M.A. & Guijarro, B. & Ordines, F. (2025) Insight into the biology, ecology and population trends of the brown skate, Raja miraletus Linnaeus, 1758, in the Balearic Islands. Journal of Fish Biology, in press https://dx.doi.org/10.1111/jfb.70051
Fischer, M.J. & Lauder, G.V. & Wainwright, D.K. (2025) Slippery and Smooth Shark Skin: How Mucus Transforms Surface Texture. Journal of Morphology, 286(4), Article e70046 https://dx.doi.org/10.1002/jmor.70046
Gajic, A.A. & de Loose, E. & Martin, A.G. & Neuman, E. & Karalic, E. & Besirovic, H. & Gayford, J.H. (2025) Two's company: Monozygotic twinning in the small-spotted catshark (Scyliorhinus canicula). Journal of Fish Biology, in press https://dx.doi.org/10.1111/jfb.70049
Gladston, Y. & Akhilesh, K.V. & Ajina, S.M. & Chakraborty, S.K. & Jaiswar, A.K. & Shenoy, L. (2025) Population dynamics of the sandwich-tail whipray Brevitrygon manjajiae (Dasyatidae) from the north-eastern Arabian Sea, India. Indian Journal of Fisheries, 72(1), 10–17 https://dx.doi.org/10.21077/ijf.2025.72.1.154661-02
Goetze, J.S. & Heithaus, M.R. & MacNeil, M.A. & Harvey, E. & Simpfendorfer, C.A. & Heupel, M.R. & Meekan, M. & Wilson, S. & Bond, M.E. & Speed, C.W. & Currey-Randall, L.M. & Fisher, R. & Sherman, C.S. & Kiszka, J.J. & Rees, M.J. & Udyawer, V. & Flowers, K.I. & Clementi, G.M. & Asher, J. & Beaufort, O. & Bernard, A.T.F. & Berumen, M.L. & Bierwagen, S.L. & Boslogo, T. & Brooks, E.J. & Brown, J.J. & Buddo, D. & Cáceres, C. & Casareto, S. & Charloo, V. & Cinner, J.E. & Clua, E.E.G. & Cochran, J.E.M. & Cook, N. & D'Alberto, B.M. & de Graaf, M. & Dornhege-Lazaroff, M.C. & Fanovich, L. & Farabaugh, N.F. & Fernando, D. & Ferreira, C.E.L. & Fields, C.Y.A. & Flam, A.L. & Floros, C. & Fourqurean, V. & Barcia, L.G. & Garla, R. & Gastrich, K. & George, L. & Graham, R. & Hagan, V. & Hardenstine, R.S. & Heck, S.M. & Heithaus, P. & Henderson, A.C. & Hertler, H. & Hueter, R.E. & Johnson, M. & Jupiter, S.D. & Kaimuddin, M. & Kasana, D. & Kelley, M. & Kessel, S.T. & Kiilu, B. & Kyne, F. & Langlois, T. & Lawe, J. & Lédée, E.J.I. & Lindfield, S. & Maggs, J.Q. & Manjaji-Matsumoto, B.M. & Marshall, A. & Matich, P. & McCombs, E. & McLean, D. & Meggs, L. & Moore, S. & Mukherji, S. & Murray, R. & Newman, S.J. & O'Shea, O.R. & Osuka, K.E. & Papastamatiou, Y.P. & Perera, N. & Peterson, B.J. & Pina-Amargós, F. & Ponzo, A. & Prasetyo, A. & Quamar, L.M.S. & Quinlan, J.R. & Razafindrakoto, C.F. & Rolim, F.A. & Ruiz-Abierno, A. & Ruiz, H. & Samoilys, M.A. & Sala, E. & Sample, W.R. & Schärer-Umpierre, M. & Schoen, S.N. & Schlaff, A.M. & Smith, A.N.H. & Sparks, L. & Stoffers, T. & Tanna, A. & Torres, R. & Travers, M.J. & Valentin-Albanese, J. & Warren, J.D. & Watts, A.M. & Wen, C.K. & Whitman, E.R. & Wirsing, A.J. & Zarza-González, E. & Chapman, D.D. (2025) Directed conservation of the world's reef sharks and rays. Nature Ecology & Evolution, 8(6), 1118 https://dx.doi.org/10.1038/s41559-024-02386-9
Goldbogen, J.A. & Cade, D.E. (2025) How do feeding biomechanics, extreme predator-prey size ratios and the rare enemy effect determine energetics and ecology at the largest scale? Journal of Experimental Biology, 228, Article jeb247875 https://dx.doi.org/10.1242/jeb.247875
González-Isáis, M. & Montes-Domínguez, H.M. (2025) Miología de la Región Cefálica de Urobatis concentricus y Urobatis maculatus (Chondrichthyes: Urotrygonidae) [Myology of the Cephalic Region of Urobatis concentricus and Urobatis maculatus (Chondrichthyes: Urotrygonidae)]. International Journal of Morphology, 43(1), 123–130
Greene, W. & Pereira, N. & Doescher, B. & Rojo-Solis, C. & David, H. & Faustino, R. & Reese, D. & De Voe, R. & Latson, E. & Mylniczenko, N. (2025) Case report: Endolymphatic system disease in elasmobranchs: clinical presentation, diagnosis, and treatment strategies. Frontiers In Veterinary Science, 11, Article 1463428 https://dx.doi.org/10.3389/fvets.2024.1463428
Guttridge, T.L. & Heim, V. & Dedman, S. & Guttridge, A.E. & Bain, S.A. & Keller, B.A. & Matich, P. (2025) Stay or go? Space and resource use of the great hammerhead (Sphyrna mokarran) off Andros Island, The Bahamas. Frontiers In Marine Science, 12, Article 1544482 https://dx.doi.org/10.3389/fmars.2025.1544482
Hammerschlag, N. & Herskowitz, Y. & Fallows, C. & Couto, T.B.A. (2025) Evidence of cascading ecosystem effects following the loss of white sharks from False Bay, South Africa. Frontiers In Marine Science, 12, Article 1530362 https://dx.doi.org/10.3389/fmars.2025.1530362
Hasenei, A.M. & Foyle, L. & Rummer, J.L. (2025) A novel, nonlethal liver biopsy procedure in an elasmobranch. Australian Veterinary Journal, in press https://dx.doi.org/10.1111/avj.13432
Holmes, L. & Huveneers, C. & Raoult, V. & Clarke, T.M. & Dietz, C. & Meyer, L. (2025) S13C, S15N, and S34S isotope values from preserved elasmobranch jaws: Implications for ecological studies from existing collections. Marine Environmental Research, 207, Article 107063 https://dx.doi.org/10.1016/j.marenvres.2025.107063
Hughes, D.F. & Blackburn, D.G. (2025) The ancestor of sharks and rays laid eggs, but ancestral state reconstructions need empirically supported traits and transparent reporting: a comment on Katona et al. (2023). Journal of Evolutionary Biology, in press https://dx.doi.org/10.1093/jeb/voaf020
Ito, T. & Segawa, T. (2025) Hematology and Plasma Biochemistry in Whale Sharks (Rhincodon typus): Baseline Reference Intervals Based on Captivity Status, Blood Sampling Sites, and Handling Methods. Zoological Studies, 64, Article 1 https://dx.doi.org/10.6620/ZS.2025.64-01
Kabasakal, H. & Uzer, U. & Karakulak, F.S. (2025) Captures of Maturing and Gravid Female Angular Roughsharks, Oxynotus centrina (Oxynotidae), in the Sea of Marmara. Journal of Ichthyology, in press https://dx.doi.org/10.1134/S0032945224701029
Kabasakal, H. & Uzer, U. & Karakulak, F.S. (2025) Did Raja asterias ever occur in the Sea of Marmara or were previous records just cases of misidentified Raja clavata? Turkish Journal of Zoology, 49(2), Article 4 https://dx.doi.org/10.55730/1300-0179.3215
Klimley, A.P. & Grubbs, R.D. & Oddone, M.C. & Rosa, R.S. & Stevens, G.M.W. & Lezama-Ochoa, N. & Stewart, J.D. & Cronin, M.R. & Li, Y.K. (2025) An introduction to one of two special issues on frontiers in elasmobranch biology. Environmental Biology of Fishes, 108(4), 437–439 https://dx.doi.org/10.1007/s10641-025-01685-9
Koehler, L. (2025) Elasmobranch research in the Mediterranean Sea: What is known, what is not, how it changed, and where it needs to go. Fisheries Research, 285, Article 107328 https://dx.doi.org/10.1016/j.fishres.2025.107328
Maciel, O.L.D. & Lima, V.F.M. & Silva, G.N. & Godoy, J.M.D. & Machado, W. & Hauser-Davis, R.A. (2025) A global survey on total arsenic concentrations in sharks. Environmental Monitoring and Assessment, 197(4), Article 444 https://dx.doi.org/10.1007/s10661-025-13867-0
Mawer, R. & Dodd, J. & Thorburn, J. & Burns, N.M. & Bailey, D.M. (2025) Using citizen science photographs to identify reproductive events in an oviparous elasmobranch. Journal of Fish Biology, in press https://dx.doi.org/10.1111/jfb.70044
McInturf, A.G. & Cantor, M. & Bouyoucos, I.A. & Chapple, T.K. & Debaere, S.F. & Eustache, K. & Mourier, J. & Planes, S. & Sulikowski, J.A. & Zillig, K.W. & Fangue, N.A. & Rummer, J.L. (2025) Catch Data Can Unravel Elasmobranch Aggregation Dynamics and Group Behaviours. Ecology and Evolution, 15(4), Article e71107 https://dx.doi.org/10.1002/ece3.71107
Moncada-Rosas, A.M. & Castro-Díaz, A. & Tripp-Valdez, A. & Galván-Magaña, F. (2025) Feeding habits of the brown smooth-hound Mustelus henlei (Chondrichthyes: Triakidae) on the west coast of Baja California Sur, Mexico. Environmental Biology of Fishes, in press https://dx.doi.org/10.1007/s10641-025-01683-x
Morales-Saldaña, J.M. & Guzmán, H.M. & Vega, A.J. & Robles, Y.A. & Montes, L.A. & Kyne, P.M. (2025) A Review of the Status of Sharks, Rays and Chimaeras of Panama to Guide Research and Conservation. Aquatic Conservation-Marine and Freshwater Ecosystems, 35(4), Article e70122 https://dx.doi.org/10.1002/aqc.70122
Nattrodt, J.J.M. & Bezerra-de-Freitas, V.A. & Merval, A.P.S.S. & Filardi, E.T. & Cerni, F.A. & Dantas, D.S.M. & Lins, A.B.M. & Galan, L.E.B. & Carbonell, R.C. & Pucca, M.B. (2025) Case report: Clinical management of freshwater stingray wounds using negative pressure therapy. Frontiers In Medicine, 12, Article 1536540 https://dx.doi.org/10.3389/fmed.2025.1536540
Nieder, C. & Parmentier, E. & Jeffs, A.G. & Radford, C. (2025) Evidence of active sound production by a shark. Royal Society Open Science, 12(3), Article 242212 https://dx.doi.org/10.1098/rsos.242212
Numaguchi, A. & Ishihara, H. (2025) Sharks are a symbol of so-called subculture. Report of Japanese Society for Elasmobranch Studies, 59, 12–19
Poltev, Y.N. & Sokov, D.V. & Linnik, E.V. (2025) Records on the Herring Shark Lamna ditropis (Lamnidae) and its Embryos in the Surf Zone of Kunashir Island (South Kuril Strait) in February 2024. Journal of Ichthyology, 65(1), 17–24 https://dx.doi.org/10.1134/S0032945224700930
Portner, E.J. & Muhling, B.A. & Preti, A. & Snodgrass, O.E. & Richards, T.M. & Nickels, C.F. & Dewar, H. & Hazen, E.L. & Choy, C.A. (2025) Resource partitioning among pelagic predators remains stable despite annual variability in diet composition. Journal of Animal Ecology, in press https://dx.doi.org/10.1111/1365-2656.70032
Reinero, F.R. & Vicariotto, C. & Marsella, A. & Micarelli, P. (2025) Preliminary observations of nursehound Scyliorhinus stellaris (Linnaeus, 1758) spawning areas in coastal waters of Tuscany, Italy. Acta Adriatica, 66(1), in press https://dx.doi.org/10.32582/aa.66.1.4
Rota, A. & Veríssimo, A. & Gaigher, A. (2025) Allele co-segregation and haplotype diversity of MHC IIβ genes in the small-spotted catshark Scyliorhinus canicula. Immunogenetics, 77(1), Article 19 https://dx.doi.org/10.1007/s00251-025-01376-w
Schiønning, M.K. & Marcús, L. & Veríssimo, A. & Thomasberger, A. & Ballyram, S.A. & Försterra, G. & Concha, F.J. (2025) Sharks and skates in the Comau Fjord, northern Patagonia, Chile: an elasmobranch species checklist with biological aspects. Journal of the Marine Biological Association of the United Kingdom, 105, Article e44 https://dx.doi.org/10.1017/S0025315425000335
Seifert, J. (2025) Additions to the tooth morphology of Duhamel's catshark Scyliorhinus duhamelii (Chondrichthyes: Scyliorhinidae). Zoological and Entomological Letters, 5(1), 80–84 https://dx.doi.org/10.22271/letters.2025.v5.i1b.120
Somu, D.R. & Soini, S.A. & Briggs, A. & Singh, K. & Greving, I. & Porter, M. & Passerotti, M. & Merk, V. (2025) A Nanoscale View of the Structure and Deformation Mechanism of Mineralized Shark Vertebral Cartilage. Acs Nano, 19(14), 14410–14421 https://dx.doi.org/10.1021/acsnano.5c02004
Spencer, E.T. & Hoopes, L.A. & Morris, J.J. & Chapman, D.D. & Hagan, V. & Papastamatiou, Y.P. (2025) Searching day and night: diel hierarchical search patterns in a large marine predator that never stops swimming. Animal Behaviour, 223, Article 123152 https://dx.doi.org/10.1016/j.anbehav.2025.123152
Stilwell, J.M. & Michaels, L. & Daniel, W. & Torres, J. & Stacy, N.I. (2025) Nephroblastoma in a Little Skate, Leucoraja erinaceus (Mitchill, 1825). Journal of Fish Diseases, in press https://dx.doi.org/10.1111/jfd.14130
Storm, Z. & Meekan, M.G. & Eich, A. & Speed, C.W. & Killen, S.S. & Lester, E.K. (2025) Recovery of reef shark populations invokes anti-predator behaviours in mesopredatory reef fishes on a coral reef. Journal of Animal Ecology, in press https://dx.doi.org/10.1111/1365-2656.70024
Tanaka, M. (2025) Exploring the evolutionary developmental mechanisms behind the fin-to-limbtransition in shark fins. Report of Japanese Society for Elasmobranch Studies, 59, 1–5
Tedesco, P. & Quadrone, E.L. & Albonetti, L. & Marcer, F. & Caffara, M. & Fioravanti, M.L. & Tinti, F. & Gustinelli, A. (2025) Gastrointestinal Helminthofauna of Mediterranean Elasmobranchs. Journal of Marine Science and Engineering, 13(3), Article 512 https://dx.doi.org/10.3390/jmse13030512
Varela, J. & Santos, C.P. & Nunes, E. & Pissarra, V. & Pires, S. & Ribeiro, B.P. & Vieira, E. & Repolho, T. & Queiroz, N. & Freitas, R. & Rosa, R. (2025) Sharks in Cabo Verde, Canarias, Madeira and Azores islands: species richness, conservation status and anthropogenic pressures (vol 12, 490317, 2025). Frontiers In Marine Science, 12, Article 1583166 https://dx.doi.org/10.3389/fmars.2025.1583166
Walker-Milne, N.L. & Papastamatiou, Y.P. & Mahaffy, S.D. & Baird, R.W. (2025) Dynamics of foraging interactions between cookiecutter sharks (Isistius spp.) and short-finned pilot whales (Globicephala macrorhynchus) in Hawai'i. Marine Biology, 172(4), Article 63 https://dx.doi.org/10.1007/s00227-025-04633-4
Wheaton, C.J. & Sullivan, K.E. & Bassiouny, E. & Burns, C.M. & Smukall, M.J. & Hendon, J.M. & Mylniczenko, N.D. (2025) Investigation of serum thyroid hormones, iodine and cobalt concentrations across common aquarium-housed elasmobranchs. Frontiers In Veterinary Science, 12, Article 1504527 https://dx.doi.org/10.3389/fvets.2025.1504527
Yamaguchi, A. & Furumitsu, K. & Ogino, Y. & Nakamura, M. & Orii, T. & Yu, C.-J. (2025) Second record of the megamouth shark Megachasma pelagios from the Sea of Japan. Report of Japanese Society for Elasmobranch Studies, 59, 6–11
Yoshizawa, S. & Konishi, K. & Koiwai, K. & Hirono, I. & Kondo, H. (2025) Organ-specific repertoires of IgNAR gene in a cartilaginous fish. Fish & Shellfish Immunology, 161, Article 110299 https://dx.doi.org/10.1016/j.fsi.2025.110299
Zea-de la Cruz, H. & Meiners-Mandujano, C. & Tovar-avila, J. & Jiménez-Badillo, L. & Oviedo-Pérez, J.L. (2025) Population Structure Dynamics of Elasmobranchs Susceptible to Shrimp Trawling Along the Southern Gulf of Mexico. Fishes, 10(3), Article 91 https://dx.doi.org/10.3390/fishes10030091
Zikmanis, K. & O'Donnell, P. & Dedman, S. & Heithaus, M.R. (2025) Legacies of Ecosystem Modification: Factors Affecting Long-Term Variation in the Abundance of Juvenile Bull Sharks in a Subtropical Estuary. Estuaries and Coasts, 48(3), Article 81 https://dx.doi.org/10.1007/s12237-025-01508-1
 

Extinct Chondrichthyes:
Brito, P.M. & Veiga, I.M. & Dutheil, D.B. & Bergqvist, L.P. (2025) First occurrence of Distobatus Werner, 1989 (Elasmobranchii: Hybodontiformes) in the middle Cretaceous (Albian–Cenomanian) of Brazil: Taxonomic and biogeographical implications. Cretaceous Research, 171, Article 106119 https://dx.doi.org/10.1016/j.cretres.2025.106119
Capasso, L. & Aziz, S.A. & Tantawy, A.A. & Mousa, M.K. & Wahba, D.G. & El-Kheir, G.A.A. (2025) Comments on the Greenfield (2025). Journal of African Earth Sciences, 228, Article 105642 https://dx.doi.org/10.1016/j.jafrearsci.2025.105642
Cerda, I. & Cavalli, S.G. & Reguero, M.A. (2025) Dental plate histology of †Ischyodus dolloi (Chondrichthyes, Holocephali), from Antarctica. Journal of Anatomy, in press https://dx.doi.org/10.1111/joa.14257
Cicimurri, D.J. & Ebersole, J.A. & Stringer, G.L. & Starnes, J.E. & Phillips, G.E. (2025) Late Oligocene fishes (Chondrichthyes and Osteichthyes) from the Catahoula Formation in Wayne County, Mississippi, USA. European Journal of Taxonomy, 984(1), 1–131 https://dx.doi.org/10.5852/ejt.2025.984.2851
de Periere, M.D. & Guinot, G. & Adnet, S. & Riechelmann, S. & Murray, A. & Merle, D. & Cesari, C. & Reid, C. & Sadah, M. (2025) Biodiversity and paleoenvironments of vertebrate-rich Eocene marine deposits (Lutetian) of the tropical western Neotethys: New insights from the Arabian Platform. Journal of Asian Earth Sciences, 288, Article 106604 https://dx.doi.org/10.1016/j.jseaes.2025.106604
Dearden, R.P. & Johanson, Z. & O’Neill, H.L. & Miles, K. & Bernard, E.L. & Clark, B. & Underwood, C.J. & Rücklin, M. (2025) Three-dimensional fossils of a Cretaceous collared carpet shark (Parascylliidae, Orectolobiformes) shed light on skeletal evolution in galeomorphs. Royal Society Open Science, 12, Article 242011 https://dx.doi.org/10.1098/rsos.242011
El Badri, A. & Masrour, M. & El Mouden, A. & Khiri, F. (2025) The Pliocene of the Western High Atlas (Morocco). Biostratigraphical, sedimentological and palaeogeographical characterisations. Journal of African Earth Sciences, 227, Article 105610 https://dx.doi.org/10.1016/j.jafrearsci.2025.105610
Eltink, E. & da Silva, K.R. & de França, M.A.G. & de Morais, D.M.F. & Soto, M. & Duffin, C.J. (2025) Morphology and paleoecology of a hybodontiform with serrated teeth, Priohybodus arambourgi, from the Late Jurassic of northeastern Brazil. Anatomical Record, in press https://dx.doi.org/10.1002/ar.25671
Feichtinger, I. & Beaury, B. & Ćorić, S. & Straube, N. & Harzhauser, M. & Kranner, M. & Auer, G. & Guinot, G. & Pollerspöck, J. (2025) A new deep-marine elasmobranch fauna from the Late Cretaceous of Bergen (Bavaria, Germany) dominated by squaliform sharks. Paläontologische Zeitschrift, 99, 71–93 https://dx.doi.org/10.1007/s12542-024-00713-w
Hoare, G. & Donovan, S.K. (2025) The Ureocrinus bockschii bed of Trearne Quarry SSSI (Mississippian, Lower Carboniferous), north Ayrshire, Scotland. Scottish Journal of Geology, 61(1), Article sjg2024008 https://dx.doi.org/10.1144/sjg2024-008
Ivanov, A.O. & Plax, D.P. (2025) New Chondrichthyan Assemblages from the Upper Devonian-Carboniferous of Belarus. Paleontological Journal, 58(Suppl 4), S391–S402 https://dx.doi.org/10.1134/S0031030124601749
Ota, A. & Nishimura, T. & Kobayashi, Y. & Moriki, K. (2025) Callorhinchus orientalis sp. nov., a new callorhinchid from the Upper Cretaceous Hakobuchi Formation, Yezo Group, Hokkaido, Japan. Paleontological Research, 29, 54–63 https://dx.doi.org/10.2517/prpsj.240013
Plax, D.P. & Lebedev, O.A. & Beznosov, P.A. (2025) Vertebrate Assemblages of the Rechitsian Time (Beginning of the Late Frasnian, Late Devonian) in the East European Platform. Paleontological Journal, 58(Suppl 4), S329–S357 https://dx.doi.org/10.1134/S0031030124601725
Tanaka, T. & Kohno, N. (2025) Paleozoic, Mesozoic and Cenozoic Chondrichthyes from the Japanese Islands. National Museum of Nature and Science Monographs, 56, 1–184
Terranova, E. & Bianucci, G. & Merella, M. & Sorbini, C. & Collareta, A. (2025) Retrieving Palaeoecological Information from Historic Fossil Finds: A Taphonomic Cold Case from Orciano Pisano (Central Italy) Reveals a Distinctive Trophic Interaction in the Pliocene Mediterranean Sea. Journal of Marine Science and Engineering, 13(3), Article 508 https://dx.doi.org/10.3390/jmse13030508
Trikolidi, F.A. (2025) The First Finds of Teeth and Placoid Scales of Orectolobids (Chondrichthyes, Orectolobiformes) in the Berriasian of Crimea. Paleontological Journal, 58(Suppl 4), S425–S433 https://dx.doi.org/10.1134/S0031030124601774
 

Guillemin, T.A. & Mcnab, J.M. & Williamson, J.E. & Bruce, N.L. (2025) A new species of Aega Leach, 1816 (Isopoda: Aegidae), a micro-predator of elasmobranchs from eastern Tasmania, Australia. Zootaxa, 5601(3), 589–599 https://dx.doi.org/10.11646/zootaxa.5601.3.12

MISCELLANEOUS:

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Nieuwe haaiensoort uit het Krijt ontdekt na onderzoek naar zeldzame fossiele 3D-skeletten uit Zuid-Engeland

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