Paratriakis robustus

Guinot, Underwood, Cappetta & Ward, 2013


Classification: Elasmobranchii Carcharhiniformes Triakidae

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
Paratriakis robustus
Holotype: NHMUK: P. 67119;


Description:


Citation: Paratriakis robustus Guinot, Underwood, Cappetta & Ward, 2013: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 02/2023

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Description
Original diagnose after Guinot et al. (2013) p. 661 [24889]: Teeth less than 3mmwide, robust and labiolingually compressed. Cusp elongate, erect in anterior teeth and strongly distally inclined in laterals; cusp as long as width of the crown. Sharp distal heel weakly convex and inclined; no cusplets. Mediolabial edge of crown and root concave. Flat basal root face, flared labially with wide nutritive groove. Mesial root notch situated between the lower region of themesial cutting edge and the labial protuberance of the root, which originates at the crown base.

Remarks
valid after Guinot et al. (2013) p. 661 [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