Squalicorax bernardezi

GUINOT, UNDERWOOD, CAPPETTA & WARD, 2013


Classification: Elasmobranchii Lamniformes Anacoracidae

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

Synonyms / new combinations and misspellings
Squalicorax aff. bernardezi, Squalicorax gutierrezmarcoi

Types
Squalicorax bernardezi
Holotype: USTL: JUH1-28;


Description:


Citation: Squalicorax bernardezi GUINOT, UNDERWOOD, CAPPETTA & WARD, 2013: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 04/2021

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Description
Original diagnose after Guinot et al. (2013) p. 629 [24889]: Teeth with a moderate degree of gradient monognathic heterodonty. Erect triangular main cusp in anterior teeth and inclined distally in laterals. Convex mesial and distal edges of the main cusp in all files except posterior teeth, where the distal edge is concave. Low and slightly convex distal heel in lingual/labial view. Strong and continuous serrations, reduced in the apical region of the cusp. Well-developed concave labiobasal bulge of the crown overhanging the root and showing arched depressions where foramina open. High and concave triangular furrow in basal region of lingual crown face. Moderately low root with poorly developed branches of concave extremities. Numerous labial foramina at the crown/root edge. Reduced lingual root face, poorly individualized from basal face. Concave basal root edge in labial/lingual view. Lateral, lateroposterior and posterior teeth showing wellmarked and arched notches on mesial and distal root edges. Strongly mesiodistally compressed parasymphyseal teeth with conical crown bearing irregular serrations. V-shaped and high root overhung by the crown labially in occlusal view.

Remarks
valid after Guinot et al. (2013) p. 629 [24889];


References
BERRELL, R.W. & BOISVERT, C. & TRINAJSTIC, K. & SIVERSSON, M. & ALVARADO-ORTEGA, J. & CAVIN, L. & SALISBURY, S.W. & KEMP, A. (2020)
A review of Australia’s Mesozoic fishes. Alcheringa, in press
DOI: 10.1080/03115518.2019.1701078
SIVERSSON, M. & COOK, T.D. & RYAN, H.E. & WATKINS, D.K. & TATARNIC, N.J. & DOWNES, P.J. & NEWBREY, M.G. (2019)
Anacoracid sharks and calcareous nannofossil stratigraphy of the mid-Cretaceous "upper' Gearle Siltstone and Haycock Marl in the lower Murchison River area, Western Australia. Alcheringa, 43 (1): 85-113
DOI: 10.1080/03115518.2018.1462401
CONDAMINE, F.L. & ROMIEU, J. & GUINOT, G. (2019)
Climate cooling and clade competition likely drove the decline of lamniform sharks. Proceedings of the National Academy of Sciences of the United States of America, 116 (41) 20584-20590
DOI: 10.1073/pnas.1902693116
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)
Late Cretaceous elasmobranch palaeoecology in NW Europe. Palaeogeography, Palaeoclimatology, Palaeoecology, 388: 23–41
DOI: 10.1016/j.palaeo.2013.07.027
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
BERNÁRDEZ, E. (2002)
Los dientes de seláceos del Cretácico de la depresión central asturiana. Thèse Doct., Univ. d'Oviedo (non publiée): 1–476, 110 fig., 1–79 pl.