Parahemiscyllium underwoodwardi

Guinot, Cappetta & Adnet, 2014


Classification: Elasmobranchii Orectolobiformes Brachaeluridae

Reference of the original description
Guinot, G. & Cappetta, H. & Adnet, S. (2014)
A rare elasmobranch assemblage from the Valanginian (Lower Cretaceous) of southern France. Cretaceous Research, 48, 54–84

Types
Parahemiscyllium underwoodwardi
Holotype: USTL: VAL-181;


Description:


Citation: Parahemiscyllium underwoodwardi Guinot, Cappetta & Adnet, 2014: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 11/2024

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Description
Original diagnose after Guinot et al. (2014) p. 73 [20107]: Orectolobiform teeth with largest teeth not exceeding 1 mm, showing moderate degree of gradient monognathic heterodonty. Erect main cusp commonly flanked by a pair of lateral cusplets. Main cusp flat labial face and convex lingual face. Cusplets triangular, well-individualised varying from straight to slightly converging. Apron convex in anterior teeth and flat to slightly concave in laterals and posteriors. Flat labial crown face in laterals and posteriors, convex at base of the main cusp in anteriors. Triangular basally oriented uvula not reaching baseline of the root. Marginal crown faces slightly flared basally and convex. Root hemiaulacorhize overhung by the crown on all sides. Root branches mesio-distally oriented in anteriors with little marked medio-labial depression. Depressed margino-lingual root faces with a pair of foramina. Medio-lingual foramina in slightly basal position, connected to a central foramen.

Remarks
shark-references Species-ID=13849;
type species of Parahemiscyllium Guinot et al. (2014) p. 73 [20107] by original designation (Art. 68.2 ICZN);

valid after Guinot et al. (2014) p. 73 [20107];

References
Guinot, G. & Cappetta, H. & Adnet, S. (2014)
A rare elasmobranch assemblage from the Valanginian (Lower Cretaceous) of southern France. Cretaceous Research, 48, 54–84
DOI: 10.1016/j.cretres.2013.11.014