Eodalatias austrinalis

ENGELBRECHT, MÖRS, REGUERO & KRIWET, 2017


Classification: Elasmobranchii Squaliformes Dalatiidae

Reference of the original description
ENGELBRECHT, A. & MÖRS, T. & REGUERO, M.A. & KRIWET, J. (2017)
Eocene squalomorph sharks (Chondrichthyes, Elasmobranchii) from Antarctica. Journal of South American Earth Sciences, 78: 175–189

Types
Eodalatias austrinalis
Holotype: NRM-PZ: P15815; Paratype: NRM-PZ: P15801; NRM-PZ: P15903;


Description:


Citation: Eodalatias austrinalis ENGELBRECHT, MÖRS, REGUERO & KRIWET, 2017: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 06/2021

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Description
Original diagnose after Engelbrecht et al. (2017) p. 181 [25551]: Extinct dalatiid shark defined by the following combination of lower tooth characters: very compressed lower teeth, with a low, convex and rather broad crown, which slightly is inclined towards the rear; mesial and distal cutting edges coarsely serrated; distal heel also with coarse serrations; distal cutting edge nearly vertical; mesial cutting edge comparatively longer than distal cutting edge and slightly concave to more or less straight; the distal heel is convex and low; short, broad, convex, and bifid apron; uvula absent; root mesio-distally compressed, with well separated root lobes; articular facets are restricted to upper part of root.

Remarks
type species of Eodalatias Engelbrecht et al., 2017 p. 181 [25551] by original designation (Art. 68.2 ICZN);

valid after Engelbrecht et al. (2017) p. 181 [25551];


References
ENGELBRECHT, A. & MÖRS, T. & REGUERO, M.A. & KRIWET, J. (2017)
Eocene squalomorph sharks (Chondrichthyes, Elasmobranchii) from Antarctica. Journal of South American Earth Sciences, 78: 175–189
DOI: 10.1016/j.jsames.2017.07.006