Truyolsodontos estauni

Bernárdez, 2018


Classification: Elasmobranchii Lamniformes Truyolsodontidae

Reference of the original description
Bernárdez, E. (2018)
Truyolsodontos estauni n. gen., n. sp., Truyolsodontidae, a new family of lamniform sharks from the Cenomanian of northern Spain. Annales de Paléontologie, 104(3), 175-181

Types
Truyolsodontos estauni
Holotype: DPO: 29.127;


Description:


Citation: Truyolsodontos estauni Bernárdez, 2018: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 08/2026

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Description
Original diagnosis after Bernárdez, 2018 [26330]: Lamniform shark whose teeth are characterized by having a holaulacorhize root, with various foramina in the basal groove and short and rounded branches in anterior teeth, whereas in lateral teeth the root is more flattened and the branches have less rounded terminations. The basal face is convex and there is a gradual transition from this to the other root faces. Main cusp low, wide at the base and quickly narrowing towards the apex in lower teeth, and similarly low, although with a triangular outline, in upper teeth. Base of the labial face of the crown clearly overhanging the root giving rise to a labial bulge and a ledge which extends also to the lingual face at the level of the lateral denticles. The labial bulge has strong folds converging to the centre of the lower part of the crown, changing from longitudinal to almost transversal. Lingual base of the crown with thin and very short longitudinal folds. Two to three low lateral cusplets on either side of the main cusp, with clawed form, distinctively recurved to the main cusp, or low and stocky when functionally eroded. Dignathic heterodonty clearly disjunct and monognathic one attenuated respective of generalized lamniforms.

Remarks
shark-references Species-ID=14048;
type species of Truyolsodontos Bernárdez, 2018 [26330] by monotypy (Art. 68.3 ICZN);

References
Bernárdez, E. (2018)
Truyolsodontos estauni n. gen., n. sp., Truyolsodontidae, a new family of lamniform sharks from the Cenomanian of northern Spain. Annales de Paléontologie, 104(3), 175-181
DOI: 10.1016/j.annpal.2018.05.002
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.