Ischyrhiza avonicola
Estes, 1964
Classification: Elasmobranchii Rajiformes Sclerorhynchidae
Reference of the original description
Fossil vertebrates from the Late Cretaceous Lance Formation, Eastern Wyoming. University of California Publications in Geological Sciences, 49, 1–180
Fossil vertebrates from the Late Cretaceous Lance Formation, Eastern Wyoming. University of California Publications in Geological Sciences, 49, 1–180
Types
Ischyrhiza avonicola
Ischyrhiza avonicola
Description:
Citation: Ischyrhiza avonicola Estes, 1964: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 05/2025
Remarks
shark-references Species-ID=3172;
valid after Cappetta (1973) p. 510 [316]; Hoganson et al. (2019) p. 37 [27441];
synonym of Ischyrhiza mira after Ebersole et al. (2024) p. 1 [33392];
shark-references Species-ID=3172;
valid after Cappetta (1973) p. 510 [316]; Hoganson et al. (2019) p. 37 [27441];
synonym of Ischyrhiza mira after Ebersole et al. (2024) p. 1 [33392];
References
Global impact and selectivity of the Cretaceous-Paleogene mass extinction among sharks, skates, and rays. Science, 379, 802–806
DOI: 10.1126/science.abn2080
First Report of Elasmobranchii and Osteichthyans from the Fox Hills Formation (Late Cretaceous), Poison Springs Locality, Northeastern Colorado. Transactions of the Kansas Academy of Science, 125(3-4), 195–232
DOI: 10.1660/062.125.0310
Chondrichthyan and Osteichthyan Paleofaunas from the Cretaceous (Late Maastrichtian) Fox Hills Formation of North Dakota, USA: Paleoecology, Paleogeography, and Extinction. Bulletins of American Paleontology, 398, 1–94
A late Maastrichtian selachian assemblage from the Peedee Formation of North Carolina, USA. Vertebrate Anatomy Morphology Palaeontology, 3, 63–80
Paleoecology of the Gaddis site in the Upper Cretaceous Aguja Formation, Terlingua, Texas. Palaios, 31(7), 347–357
DOI: 10.2110/palo.2015.099
Euselachians from the freshwater deposits of the Hell Creek Formation of Montana. Geological Society of America, Special Paper, 503, 229–246
DOI: 10.1130/2014.2503(08)
Vertebrate Paleontology and Stratigraphy of the Late Cretaceous Holmdel Park Site, Monmouth County, New Jersey. Dakoterra, 6: 163–169
Chondrichthyans from the Arkadelphia Formation (Upper Cretaceous: upper Maastrichtian) of Hot Spring County, Arkansas. Journal of Paleontology, 80(4), 700–716
DOI: 10.1666/0022-3360(2006)80[700:CFTAFU]2.0.CO;2
Distribution, age and correlation of Cretaceous fossil vertebrates from Arizona. New Mexico Museum of Natural History and Science, Bulletin, 29, 104–109
Cenomanian-Turonian Fish Fauna from the Boquillas Formation at Jaboncillos, North-West Coahuila, Mexico. In Fourth International Meeting On Mesozoic Fishes – Systematics, Homology, And Nomenclature Miraflores De La Sierra, Madrid, Spain August 8th–14th, 2005, Extended Abstracts: 105–108
Chondrichthyans from the Fairpoint Member of the Fox Hills Formation (Maastrichtian), Meade County, South Dakota. Journal of Vertebrate Paleontology, 24(4), 780–793
DOI: 10.1671/0272-4634(2004)024[0780:CFTFMO]2.0.CO;2
Middle Turonian (Late Cretaceous) selachian fossil assemblages from central New Mexico [Abstract]. Geological Society of America, Abstracts with Programs, 35: 15
Vertebrate biostratigraphy of the Hell Creek Formation in southwestern North Dakota and northwestern South Dakota. Geological Society of America Special Paper, 361, 145–167
Fossil shark remains from the early and middle Maastrichtian of the Upper Cretaceous of Monmouth County, New Jersey. In J. Baker(ed.), Contributions to the Paleontology of New Jersey. Geological Association of New Jersey 12: 72–80
Selachians from the Greenhorn cyclothem («Middle» Cretaceous: Cenomanian-Turonian), Black Mesa, Arizona, and the paleogeographic distribution of late Cretaceous selachians. Journal of Paleontology, 67(3), 447–474
The collector's guide to fossil sharks and rays from the Cretaceous of Texas. Before Time, Lewisville, 1993
The Campanian Terlingua local fauna, with a summary of other vertebrates from the Aguja Formation, Trans-Pecos Texas. Journal of Vertebrate Paleontology, 12(4), 472–493
DOI: 10.1080/02724634.1992.10011475
Non-dinosaurian lower vertebrates across the Cretaceous-Tertiary boundary in northeastern Montana. University of California Publications in Geological Sciences, 134, 1–107
Selachians from the Atarque Sandstone Member of the Tres Hermanos Formation (Upper Cretaceous: Turonian), Sevilleta Grant near La Joya, Socorro County, New Mexico. New Mexico Bureau of Mines and Mineral Resources, Circular, 195, 7–19
Selachians from the Late Cretaceous (Turonian) Atarque Sandstone Member, Tres Hermanos Formation, Sevilleta Grant, Socorro County, New Mexico. New Mexico Geology, 7, 1–7
Upper Cretaceous sharks from the Black Hills region, Wyoming and South Dakota. Mountain Geologist, 16(2), 59–66
An aniliid snake and associated vertebrates from the Campanian of New Mexico. Journal of Paleontology, 52(2), 480–483
Les Sélaciens des terrains néocrétacés et paléocènes de Belgique et des contrées limitrophes. Eléments d'une biostratigraphie intercontinentale. Mémoires pour servir à l'explication des Cartes géologiques et minières de la Belgique, 15, 1–401
Selachians from the Carlile Shale (Turonian) of South Dakota. Journal of Paleontology, 47(3), 504–514
Lower vertebrates from the Late Cretaceous Hell Creek Formation, McCone County, Montana. Breviora, 337, 1–33
Notes on rostral teeth of Ganopristine sawfishes, with special reference to Texas material. Journal of Paleontology, 42(1), 233–239
Fossil vertebrates from the Late Cretaceous Lance Formation, Eastern Wyoming. University of California Publications in Geological Sciences, 49, 1–180

Global impact and selectivity of the Cretaceous-Paleogene mass extinction among sharks, skates, and rays. Science, 379, 802–806
DOI: 10.1126/science.abn2080

First Report of Elasmobranchii and Osteichthyans from the Fox Hills Formation (Late Cretaceous), Poison Springs Locality, Northeastern Colorado. Transactions of the Kansas Academy of Science, 125(3-4), 195–232
DOI: 10.1660/062.125.0310
Chondrichthyan and Osteichthyan Paleofaunas from the Cretaceous (Late Maastrichtian) Fox Hills Formation of North Dakota, USA: Paleoecology, Paleogeography, and Extinction. Bulletins of American Paleontology, 398, 1–94
A late Maastrichtian selachian assemblage from the Peedee Formation of North Carolina, USA. Vertebrate Anatomy Morphology Palaeontology, 3, 63–80

Paleoecology of the Gaddis site in the Upper Cretaceous Aguja Formation, Terlingua, Texas. Palaios, 31(7), 347–357
DOI: 10.2110/palo.2015.099

Euselachians from the freshwater deposits of the Hell Creek Formation of Montana. Geological Society of America, Special Paper, 503, 229–246
DOI: 10.1130/2014.2503(08)

Vertebrate Paleontology and Stratigraphy of the Late Cretaceous Holmdel Park Site, Monmouth County, New Jersey. Dakoterra, 6: 163–169

Chondrichthyans from the Arkadelphia Formation (Upper Cretaceous: upper Maastrichtian) of Hot Spring County, Arkansas. Journal of Paleontology, 80(4), 700–716
DOI: 10.1666/0022-3360(2006)80[700:CFTAFU]2.0.CO;2
Distribution, age and correlation of Cretaceous fossil vertebrates from Arizona. New Mexico Museum of Natural History and Science, Bulletin, 29, 104–109

Cenomanian-Turonian Fish Fauna from the Boquillas Formation at Jaboncillos, North-West Coahuila, Mexico. In Fourth International Meeting On Mesozoic Fishes – Systematics, Homology, And Nomenclature Miraflores De La Sierra, Madrid, Spain August 8th–14th, 2005, Extended Abstracts: 105–108

Chondrichthyans from the Fairpoint Member of the Fox Hills Formation (Maastrichtian), Meade County, South Dakota. Journal of Vertebrate Paleontology, 24(4), 780–793
DOI: 10.1671/0272-4634(2004)024[0780:CFTFMO]2.0.CO;2
Middle Turonian (Late Cretaceous) selachian fossil assemblages from central New Mexico [Abstract]. Geological Society of America, Abstracts with Programs, 35: 15

Vertebrate biostratigraphy of the Hell Creek Formation in southwestern North Dakota and northwestern South Dakota. Geological Society of America Special Paper, 361, 145–167

Fossil shark remains from the early and middle Maastrichtian of the Upper Cretaceous of Monmouth County, New Jersey. In J. Baker(ed.), Contributions to the Paleontology of New Jersey. Geological Association of New Jersey 12: 72–80

Selachians from the Greenhorn cyclothem («Middle» Cretaceous: Cenomanian-Turonian), Black Mesa, Arizona, and the paleogeographic distribution of late Cretaceous selachians. Journal of Paleontology, 67(3), 447–474

The collector's guide to fossil sharks and rays from the Cretaceous of Texas. Before Time, Lewisville, 1993

The Campanian Terlingua local fauna, with a summary of other vertebrates from the Aguja Formation, Trans-Pecos Texas. Journal of Vertebrate Paleontology, 12(4), 472–493
DOI: 10.1080/02724634.1992.10011475

Non-dinosaurian lower vertebrates across the Cretaceous-Tertiary boundary in northeastern Montana. University of California Publications in Geological Sciences, 134, 1–107
Selachians from the Atarque Sandstone Member of the Tres Hermanos Formation (Upper Cretaceous: Turonian), Sevilleta Grant near La Joya, Socorro County, New Mexico. New Mexico Bureau of Mines and Mineral Resources, Circular, 195, 7–19

Selachians from the Late Cretaceous (Turonian) Atarque Sandstone Member, Tres Hermanos Formation, Sevilleta Grant, Socorro County, New Mexico. New Mexico Geology, 7, 1–7

Upper Cretaceous sharks from the Black Hills region, Wyoming and South Dakota. Mountain Geologist, 16(2), 59–66

An aniliid snake and associated vertebrates from the Campanian of New Mexico. Journal of Paleontology, 52(2), 480–483

Les Sélaciens des terrains néocrétacés et paléocènes de Belgique et des contrées limitrophes. Eléments d'une biostratigraphie intercontinentale. Mémoires pour servir à l'explication des Cartes géologiques et minières de la Belgique, 15, 1–401

Selachians from the Carlile Shale (Turonian) of South Dakota. Journal of Paleontology, 47(3), 504–514
Lower vertebrates from the Late Cretaceous Hell Creek Formation, McCone County, Montana. Breviora, 337, 1–33

Notes on rostral teeth of Ganopristine sawfishes, with special reference to Texas material. Journal of Paleontology, 42(1), 233–239

Fossil vertebrates from the Late Cretaceous Lance Formation, Eastern Wyoming. University of California Publications in Geological Sciences, 49, 1–180