Scyliorhinus monsaugustus

GUINOT, UNDERWOOD, CAPPETTA & WARD, 2013


Classification: Elasmobranchii Carcharhiniformes Scyliorhinidae

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
Scyliorhinus monsaugustus
Holotype: USTL: MAO2-29;


Description:


Citation: Scyliorhinus monsaugustus GUINOT, UNDERWOOD, CAPPETTA & WARD, 2013: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 03/2021

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Description
Original diagnose after Guinot et al. (2013) p. 654 [24889]: Teeth under 1 mm high, higher than wide, showing strong gradient heterodonty. Triangular main cusp flanked by a pair of lateral cusplets in anterior, two in laterals. Lingual and labial ornament varying with jaw position; lingual face of anterior teeth with fine longitudinal ridges restricted to the marginal areas, smooth or very weakly ornamented in laterals; labial face generally smooth or with few short vertical ridges below cusplets and/or on the basal region of main cusp in anteriors, reduced to strong crenulations on the basal bulge of lateral teeth; lower parasymphyseal teeth with stronger ornament. Main cusp weakly inclined distally in anterior teeth, more inclined and broader in laterals. Labial basal edge of crown concave. Root low,Vshaped with lingually and labially flared and flat to weakly convex basal face; strong and rounded mediolingual protuberance; labial lobe extremities flared and curved towards the cusplets. Numerous rounded and wide labial foramina.

Remarks
valid after Guinot et al. (2013) p. 654 [24889];


References
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