Platyrhizodon barbei

Guinot, Underwood, Cappetta & Ward, 2013


Classification: Elasmobranchii Carcharhiniformes incert. fam.

Reference of the original description
Guinot, G. & Underwood, C.J. & Cappetta, H. & Ward, D.J. (2013)
Sharks (Elasmobranchii: Euselachii) from the Late Cretaceous of France and the UK. Journal of Systematic Palaeontology, 11(6), 589–671

Types
Platyrhizodon barbei
Holotype: USTL: SRU-66;


Description:


Citation: Platyrhizodon barbei Guinot, Underwood, Cappetta & Ward, 2013: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 01/2023

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Description
Original diagnose after Guinot et al. (2013) p. 664 [24889]: Robust teeth with low degree of monognathic heterodonty. Anterolateral teeth symmetrical and as high as wide; lateral teeth more mesiodistally expanded; triangular and biconvex main cusp with well-developed cutting edges and high heels except in anteriors. Labial ornament of short and strong longitudinal ridges not reaching the crown base, tapering at the height of the heels. Flat and strongly labially and lingually flared basal root face; nutritive groove varying from open to partly closed. Several labial, lingual and basal foramina.

Remarks
valid after Guinot et al. (2013) p. 664 [24889];


References
Brée, B. & Condamine, F.L. & Guinot, G. (2022)
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
Bazzi, M. & Campione, N.E. & Kear, B.P. & Pimiento, C. & Ahlberg, P.E. (2021)
Feeding ecology has shaped the evolution of modern sharks. Current Biology, 31(23), 5138–5148
DOI: 10.1016/j.cub.2021.09.028
Guinot, G. & Underwood, C.J. & Cappetta, H. & Ward, D.J. (2013)
Sharks (Elasmobranchii: Euselachii) from the Late Cretaceous of France and the UK. Journal of Systematic Palaeontology, 11(6), 589–671
DOI: 10.1080/14772019.2013.767286
Guinot, G. (2013)
Regional to global patterns in Late Cretaceous selachian (Chondrichthyes, Euselachii) diversity. Journal of Vertebrate Paleontology, 33(3), 521–531
DOI: 10.1080/02724634.2013.740116
Guinot, G. (2013)
Late Cretaceous elasmobranch palaeoecology in NW Europe. Palaeogeography, Palaeoclimatology, Palaeoecology, 388, 23–41
DOI: 10.1016/j.palaeo.2013.07.027