Thrinacodus bicuspidatus

Ginter & Sun, 2007


Classification: Elasmobranchii Phoebodontiformes Phoebodontidae

Reference of the original description
Ginter, M. & Sun, Y. (2007)
Chondrichthyan remains from the Lower Carboniferous of Muhua, southern China. Acta Palaeontologica Polonica, 52(4), 705–727

Types
Thrinacodus bicuspidatus
Holotype: PKUM: 02−0129;


Description:


Citation: Thrinacodus bicuspidatus Ginter & Sun, 2007: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 09/2026

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Material
Material of the first description [3144]: 9 teeth

Description
Original diagnosis after Ginter & Sun, 2007 [3144]: A species of Thrinacodus whose dentition is composed at least partly of teeth with only two cusps in the crown. The species resembles Thrinacodus ferox (Turner, 1982) in the general tooth outline, the shape of the base and the strong crown asymmetry in the lateral teeth, but differs by the loss of one of the cusps.

References
Ivanov, A.O. & Beznosov, P.A. (2026)
Early Carboniferous ichthyofauna from the Tournaisian of Malaya Usa river Basin, Polar Urals (Russia). Geologicheskii vestnik, 2, 126–134
DOI: 10.31084/2619-0087/2026-2-9
Schnetz, L. & Dunne, E.M. & Feichtinger, I. & Butler, R.J. & Coates, M.I. & Sansom, I.J. (2024)
Rise and diversification of chondrichthyans in the Paleozoic. Paleobiology, 50(2), 271–284
DOI: 10.1017/pab.2024.1
Ginter, M. (2022)
The biostratigraphy of Carboniferous chondrichthyans. In S.G. Lucas, J.W. Schneider, X. Wang, & S. Nikolaeva (Eds.), The Carboniferous Timescale. Geological Society, London, Special Publications, 512, Article SP512-2020-91
DOI: 10.1144/SP512-2020-91
Habibi, T. & Ginter, M. (2011)
Early Carboniferous chondrichthyans from the Mobarak Formation, Central Alborz Mountains, Iran. Acta Geologica Polonica, 61(1), 27–165
Ginter, M. & Turner, S. (2010)
The middle Paleozoic Selachian genus Thrinacodus. Journal of Vertebrate Paleontology, 30(6), 1666–1672
DOI: 10.1080/02724634.2010.520785
Ginter, M. & Hampe, O. & Duffin, C.J. (2010)
Handbook of Paleoichthyology, Vol. 3D: Chondrichthyes Paleozoic Elasmobranchii: Teeth Verlag Dr. Friedrich Pfeil, pp. 168, 154 fig., 4 Tab.
Ginter, M. & Sun, Y. (2007)
Chondrichthyan remains from the Lower Carboniferous of Muhua, southern China. Acta Palaeontologica Polonica, 52(4), 705–727