Echinorhinus wadanohanaensis
Kitamura, 2013
Classification: Elasmobranchii Echinorhiniformes Echinorhinidae
Reference of the original description
Description of a New Species of the Family Echinorhinidae (Chondrichthyes, Elasmobranchii) from the Upper Cretaceous Himenoura Group in Kumamoto Prefecture, Southwestern Japan. Paleontological Research, 17(2), 189–195
Description of a New Species of the Family Echinorhinidae (Chondrichthyes, Elasmobranchii) from the Upper Cretaceous Himenoura Group in Kumamoto Prefecture, Southwestern Japan. Paleontological Research, 17(2), 189–195
Types
Echinorhinus wadanohanaensis
Holotype: KCM: 12-000266; Paratype: KCM: 12-000362; KCM: 12-000267; KCM: 12-000064;
Echinorhinus wadanohanaensis
Holotype: KCM: 12-000266; Paratype: KCM: 12-000362; KCM: 12-000267; KCM: 12-000064;
Description by Pollerspoeck, Juergen:
Benediktinerring 34, D-94569 Stephansposching; juergen.pollerspoeck@shark-references.comCitation: Echinorhinus wadanohanaensis Kitamura, 2013: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 11/2024
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Distribution Geographic
type locality: Wadanohana, Ryugatake-machi Kamiamakusa, Kumamoto Prefecture [19480];
other localities:
Distribution of Echinorhinidae show google map
type locality: Wadanohana, Ryugatake-machi Kamiamakusa, Kumamoto Prefecture [19480];
other localities:
Distribution of Echinorhinidae show google map
Distribution Strategraphy
Hinoshima Formation (“lower member”) of the Himenoura Group, Santonian [19480];
Hinoshima Formation (“lower member”) of the Himenoura Group, Santonian [19480];
Measurement
measurement max (holotype): Tooth height: 11.4 mm, tooth width: 21.3 mm, tooth thickness (labiolingual): 2.7 mm, crown height: 5.4 mm, crown width: 21.3 mm, root height: 6.0 mm [19480];
measurement max (holotype): Tooth height: 11.4 mm, tooth width: 21.3 mm, tooth thickness (labiolingual): 2.7 mm, crown height: 5.4 mm, crown width: 21.3 mm, root height: 6.0 mm [19480];
Material
4 teeth (holotype and three paratypes, collection nr.: KCM 12-000266, KCM 12-000362, KCM 12-000267, KCM 12-000064) [19480];
4 teeth (holotype and three paratypes, collection nr.: KCM 12-000266, KCM 12-000362, KCM 12-000267, KCM 12-000064) [19480];
Description
Original diagnose after KITAMURA [19480]: The main cusp is distally inclined. The distally directed cusp apex does not extend beyond the distal demarcation of the distal heel. Lateral cusplets (basal cusplets) are absent. The principal cusp is relatively very large. There is no vertical groove in the central region of the root. There are a few grooves below the boundary of the enameloid on the lingual face. The tooth size is markedly large.
Original diagnose after KITAMURA [19480]: The main cusp is distally inclined. The distally directed cusp apex does not extend beyond the distal demarcation of the distal heel. Lateral cusplets (basal cusplets) are absent. The principal cusp is relatively very large. There is no vertical groove in the central region of the root. There are a few grooves below the boundary of the enameloid on the lingual face. The tooth size is markedly large.
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
Santonian-Campanian neoselachian faunas of the Upper Cretaceous Yezo Group in Nakagawa Town, Hokkaido, Japan. Cretaceous Research, 133, Article 105139
DOI: 10.1016/j.cretres.2022.105139
Features and Paleoecological Significance of the Shark Fauna from the Upper Cretaceous Hinoshima Formation, Himenoura Group, Southwest Japan. Paleontological Research, 23(2), 110–130
DOI: 10.2517/2018PR013
Description of a New Species of the Family Echinorhinidae (Chondrichthyes, Elasmobranchii) from the Upper Cretaceous Himenoura Group in Kumamoto Prefecture, Southwestern Japan. Paleontological Research, 17(2), 189–195
DOI: 10.2517/1342-8144-17.2.189
Global impact and selectivity of the Cretaceous-Paleogene mass extinction among sharks, skates, and rays. Science, 379, 802–806
DOI: 10.1126/science.abn2080
Santonian-Campanian neoselachian faunas of the Upper Cretaceous Yezo Group in Nakagawa Town, Hokkaido, Japan. Cretaceous Research, 133, Article 105139
DOI: 10.1016/j.cretres.2022.105139
Features and Paleoecological Significance of the Shark Fauna from the Upper Cretaceous Hinoshima Formation, Himenoura Group, Southwest Japan. Paleontological Research, 23(2), 110–130
DOI: 10.2517/2018PR013
Description of a New Species of the Family Echinorhinidae (Chondrichthyes, Elasmobranchii) from the Upper Cretaceous Himenoura Group in Kumamoto Prefecture, Southwestern Japan. Paleontological Research, 17(2), 189–195
DOI: 10.2517/1342-8144-17.2.189
