Obruchevodus griffithi
Grogan, Lund & Fath, 2014
Classification: Euchondrocephali Petalodontiformes Petalodontidae
Reference of the original description
A New Petalodont Chondrichthyan from the Bear Gulch Limestone of Montana, USA, with Reassessment of Netsepoye hawesi and Comments on the Morphology of Holomorphic Petalodonts. Paleontological Journal, 48(9), 1003–1014
A New Petalodont Chondrichthyan from the Bear Gulch Limestone of Montana, USA, with Reassessment of Netsepoye hawesi and Comments on the Morphology of Holomorphic Petalodonts. Paleontological Journal, 48(9), 1003–1014
Description:
Citation: Obruchevodus griffithi Grogan, Lund & Fath, 2014: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 08/2026
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Description
Original diagnosis after Grogan, Lund & Fath, 2014 [21768]: Small, nearly complete (60.4 mm, preserved to caudal peduncle), male, holostylic petalodont with chimaeroid style cranium (21.36 mm; 42.4% ethmorostral, 43.4% orbital, 14.1% oticooccipital) and nested branchial arches, compressiform body (anteriorly widest and deep, tapering posteriorly), two aspinous dorsal fins, enlarged anteriorly extended swimming pectoral fins, and with heterodont dentition arranged in tooth families of linguo labial replacement but differing in the number of tooth families between the upper (one median, five distal) and lower jaws (one median, four distal).
Original diagnosis after Grogan, Lund & Fath, 2014 [21768]: Small, nearly complete (60.4 mm, preserved to caudal peduncle), male, holostylic petalodont with chimaeroid style cranium (21.36 mm; 42.4% ethmorostral, 43.4% orbital, 14.1% oticooccipital) and nested branchial arches, compressiform body (anteriorly widest and deep, tapering posteriorly), two aspinous dorsal fins, enlarged anteriorly extended swimming pectoral fins, and with heterodont dentition arranged in tooth families of linguo labial replacement but differing in the number of tooth families between the upper (one median, five distal) and lower jaws (one median, four distal).
Remarks
shark-references Species-ID=14190;
type species of Obruchevodus Grogan, Lund & Fath, 2014 [21768] by original designation (Art. 68.2 ICZN);
shark-references Species-ID=14190;
type species of Obruchevodus Grogan, Lund & Fath, 2014 [21768] by original designation (Art. 68.2 ICZN);
References
Rise and diversification of chondrichthyans in the Paleozoic. Paleobiology, 50(2), 271–284
DOI: 10.1017/pab.2024.1
A New Petalodont Chondrichthyan from the Bear Gulch Limestone of Montana, USA, with Reassessment of Netsepoye hawesi and Comments on the Morphology of Holomorphic Petalodonts. Paleontological Journal, 48(9), 1003–1014
DOI: 10.1134/S0031030114090044
Rise and diversification of chondrichthyans in the Paleozoic. Paleobiology, 50(2), 271–284
DOI: 10.1017/pab.2024.1
A New Petalodont Chondrichthyan from the Bear Gulch Limestone of Montana, USA, with Reassessment of Netsepoye hawesi and Comments on the Morphology of Holomorphic Petalodonts. Paleontological Journal, 48(9), 1003–1014
DOI: 10.1134/S0031030114090044
