Callorhinchus orientalis
Ota, Nishimura, Kobayashi & Moriki, 2025
Classification: Holocephali Chimaeriformes Callorhinchidae
Reference of the original description
Callorhinchus orientalis sp. nov., a new callorhinchid from the Upper Cretaceous Hakobuchi Formation, Yezo Group, Hokkaido, Japan. Paleontological Research, 29, 54–63
Callorhinchus orientalis sp. nov., a new callorhinchid from the Upper Cretaceous Hakobuchi Formation, Yezo Group, Hokkaido, Japan. Paleontological Research, 29, 54–63
Description:
Citation: Callorhinchus orientalis Ota, Nishimura, Kobayashi & Moriki, 2025: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 09/2025
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Callorhinchus orientalis Ota, Nishimura, Kobayashi & Moriki, 2025; left palatine tooth plate, holotype HMG-2013, Pankerusano-sawa Creek, Tomiuchi District, Hokkaido, northern Japan, Upper Cretaceous Hakobuchi Formation © Ota et al. (2025)

Callorhinchus orientalis Ota, Nishimura, Kobayashi & Moriki, 2025; left palatine tooth plate, holotype HMG-2013, Pankerusano-sawa Creek, Tomiuchi District, Hokkaido, northern Japan, Upper Cretaceous Hakobuchi Formation © Ota et al. (2025)
Description
Diagnosis after Ota, Nishimura, Kobayashi & Moriki, 2025 [34364]: Palatine tooth plate bearing a single tritor and a distinct anterior projection. This plate differs from that of other species in the genus by the single tritor’s posterior margin extending toward the lingual–labial margin of the plate.
Diagnosis after Ota, Nishimura, Kobayashi & Moriki, 2025 [34364]: Palatine tooth plate bearing a single tritor and a distinct anterior projection. This plate differs from that of other species in the genus by the single tritor’s posterior margin extending toward the lingual–labial margin of the plate.
Remarks
shark-references Species-ID=17633
shark-references Species-ID=17633
References
Callorhinchus orientalis sp. nov., a new callorhinchid from the Upper Cretaceous Hakobuchi Formation, Yezo Group, Hokkaido, Japan. Paleontological Research, 29, 54–63
DOI: 10.2517/prpsj.240013
Callorhinchus orientalis sp. nov., a new callorhinchid from the Upper Cretaceous Hakobuchi Formation, Yezo Group, Hokkaido, Japan. Paleontological Research, 29, 54–63
DOI: 10.2517/prpsj.240013