Kallodentis rhytistemma
Engelbrecht, Mörs, Reguero & Kriwet, 2017
Classification: Elasmobranchii Carcharhiniformes Triakidae
Reference of the original description
New carcharhiniform sharks (Chondrichthyes, Elasmobranchii) from the early to middle Eocene of Seymour Island, Antarctic Peninsula. Journal of Vertebrate Paleontology, 37(6), Article e1371724
New carcharhiniform sharks (Chondrichthyes, Elasmobranchii) from the early to middle Eocene of Seymour Island, Antarctic Peninsula. Journal of Vertebrate Paleontology, 37(6), Article e1371724
Types
Kallodentis rhytistemma
Holotype: NRM-PZ: P16143; Paratype: NRM-PZ: P16136–16142, P16144–16147; NRM-PZ: P16181–16189; P16190–16193; NRM-PZ: P16194–16205; NRM-PZ: P16224; NRM-PZ: P16225;
Kallodentis rhytistemma
Holotype: NRM-PZ: P16143; Paratype: NRM-PZ: P16136–16142, P16144–16147; NRM-PZ: P16181–16189; P16190–16193; NRM-PZ: P16194–16205; NRM-PZ: P16224; NRM-PZ: P16225;
Description:
Citation: Kallodentis rhytistemma Engelbrecht, Mörs, Reguero & Kriwet, 2017: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 08/2026
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Please send your images of "Kallodentis rhytistemma" to
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Description
Original diagnosis after Engelbrecht, Mörs, Reguero & Kriwet, 2017 [25864]: Fossil triakid shark characterized by the following combination of dental characters: tooth crown taller than broad in anteriors but mesiodistally broader than tall in anterolateral teeth to posterior teeth; well-developed main cusp; one to three distal cusplets in all teeth; mesial cutting edge longer than distal one and slightly sigmoidal in lateroposterior teeth; labial ornamentation present; rather coarse basal costules on the basal labial face; short and fine striae on the mesial lingual heel in most teeth; apron-like bulge of basal labial crown face absent; uvula absent; root slightly mesiodistally broader than crown; and root lobes very well separated, with flat basal faces.
Original diagnosis after Engelbrecht, Mörs, Reguero & Kriwet, 2017 [25864]: Fossil triakid shark characterized by the following combination of dental characters: tooth crown taller than broad in anteriors but mesiodistally broader than tall in anterolateral teeth to posterior teeth; well-developed main cusp; one to three distal cusplets in all teeth; mesial cutting edge longer than distal one and slightly sigmoidal in lateroposterior teeth; labial ornamentation present; rather coarse basal costules on the basal labial face; short and fine striae on the mesial lingual heel in most teeth; apron-like bulge of basal labial crown face absent; uvula absent; root slightly mesiodistally broader than crown; and root lobes very well separated, with flat basal faces.
Remarks
shark-references Species-ID=14963;
type species of Kallodentis Engelbrecht, Mörs, Reguero & Kriwet, 2017 [25864] by original designation (Art. 68.2 ICZN);
shark-references Species-ID=14963;
type species of Kallodentis Engelbrecht, Mörs, Reguero & Kriwet, 2017 [25864] by original designation (Art. 68.2 ICZN);
References
Eocene Shark Teeth From Peninsular Antarctica: Windows to Habitat Use and Paleoceanography. Paleoceanography and Paleoclimatology, 39(11), Article e2024PA004965
DOI: 10.1029/2024PA004965
Middle Eocene chondrichthyan fauna from Antarctic Peninsula housed in the Museo de La Plata, Argentina. Advances in Polar Science, 35(1), 14–47
DOI: 10.12429/j.advps.2023.0035
Combining palaeontological and neontological data shows a delayed diversification burst of carcharhiniform sharks likely mediated by environmental change. Scientific Reports, 12, Article 21906
DOI: 10.1038/s41598-022-26010-7
New carcharhiniform sharks (Chondrichthyes, Elasmobranchii) from the early to middle Eocene of Seymour Island, Antarctic Peninsula. Journal of Vertebrate Paleontology, 37(6), Article e1371724
DOI: 10.1080/02724634.2017.1371724
Eocene Shark Teeth From Peninsular Antarctica: Windows to Habitat Use and Paleoceanography. Paleoceanography and Paleoclimatology, 39(11), Article e2024PA004965
DOI: 10.1029/2024PA004965
Middle Eocene chondrichthyan fauna from Antarctic Peninsula housed in the Museo de La Plata, Argentina. Advances in Polar Science, 35(1), 14–47
DOI: 10.12429/j.advps.2023.0035
Combining palaeontological and neontological data shows a delayed diversification burst of carcharhiniform sharks likely mediated by environmental change. Scientific Reports, 12, Article 21906
DOI: 10.1038/s41598-022-26010-7
New carcharhiniform sharks (Chondrichthyes, Elasmobranchii) from the early to middle Eocene of Seymour Island, Antarctic Peninsula. Journal of Vertebrate Paleontology, 37(6), Article e1371724
DOI: 10.1080/02724634.2017.1371724
