Paracestracion pectinatus
Guinot, Cappetta & Adnet, 2014
Classification: Elasmobranchii Heterodontiformes Heterodontidae
Reference of the original description
A rare elasmobranch assemblage from the Valanginian (Lower Cretaceous) of southern France. Cretaceous Research, 48, 54–84
A rare elasmobranch assemblage from the Valanginian (Lower Cretaceous) of southern France. Cretaceous Research, 48, 54–84
Description:
Citation: Paracestracion pectinatus 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. 69 [20107]: Teeth generally wider than high showing a moderate gradual heterodonty. Crown smooth, bearing three to five triangular cusps lingually oriented. Cusps with well-developed cutting edges running continuously along the occlusal edge. Occlusal face convex in profile view; apron convex in occlusal view with rounded to slightly pointed labial edge, projecting basally. Triangular lingual crown face with narrow and sharp triangular uvula. Narrow labiolingually compressed root overhung by the crown at all points in occlusal view; nutritive groove generally well-developed and pierced by a large central foramen. Concave mesial and distal root edges in lingual view with a large basal foramen. Molariform posterior teeth strongly labio-lingually compressed and mesio-distally elongate with incipient main cusp. Low crown with concave labial face in profile view bearing a fine mesio-distal ridge.
Original diagnose after Guinot et al. (2014) p. 69 [20107]: Teeth generally wider than high showing a moderate gradual heterodonty. Crown smooth, bearing three to five triangular cusps lingually oriented. Cusps with well-developed cutting edges running continuously along the occlusal edge. Occlusal face convex in profile view; apron convex in occlusal view with rounded to slightly pointed labial edge, projecting basally. Triangular lingual crown face with narrow and sharp triangular uvula. Narrow labiolingually compressed root overhung by the crown at all points in occlusal view; nutritive groove generally well-developed and pierced by a large central foramen. Concave mesial and distal root edges in lingual view with a large basal foramen. Molariform posterior teeth strongly labio-lingually compressed and mesio-distally elongate with incipient main cusp. Low crown with concave labial face in profile view bearing a fine mesio-distal ridge.
References
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
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