Diprosopovenator hilperti

Stumpf, Scheer & Kriwet, 2019


Classification: Elasmobranchii Carcharhiniformes Pseudoscyliorhinidae

Reference of the original description
Stumpf, S. & Scheer, U. & Kriwet, J. (2019)
A new genus and species of extinct ground shark, †Diprosopovenator hilperti, gen. et sp. nov. (Carcharhiniformes, †Pseudoscyliorhinidae, fam. nov.), from the Upper Cretaceous of Germany. Journal of Vertebrate Paleontology, 39(2), Article e1593185

Types
Diprosopovenator hilperti
Holotype: RE: A 4872/1+2;


Description:


Citation: Diprosopovenator hilperti Stumpf, Scheer & Kriwet, 2019: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 10/2024

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Description
Original diagnose after Stumpf et al. (2019) p. 2-3 [27281]: †Pseudoscyliorhinid shark showing the following unique combination of morphological characters: presence of a supraorbital crest above the orbit; possession of an antorbital and postorbital wall delimiting the orbit anteriorly and posteriorly, respectively; presence of a small postorbital process and a distinct sphenopterotic ridge; Meckel’s cartilage rather slender and anteroposteriorly elongated; vertebrae of cyclospondylic type and strongly hourglass-shaped without ornamentation; orthodont-type teeth; tooth crown with prominent, lingually inclined main cusp that is flanked by a single pair of short, pointed lateral cusplets; cusp and lateral cusplets with continuous, weakly developed cutting edges; absence of tooth crown ornamentation; teeth of lateral and posterior positions with distally inclined main cusp forming oblique cutting edges that reach about one-third of the way to the apex of the cusp; oblique grooves on the labial face of the crown; root low with hemiaulacorhize vascularization pattern; basal face of the root very flat and strongly flared, exhibiting a roughly semicircular to oval outline in basal view; lingual protuberance of the root rounded and weakly developed; and labial face of the root with grooves, furrows, and small foramina, especially along the labial basal edge of the root, and with a central basally open notch that gives rise to a slit-like, deeply incised mediolabial groove on the basal face of the root.

Remarks
shark-references Species-ID=15438;
type species of Diprosopovenator Stumpf et al., 2019 p. 2 [27281] by original designation (Art. 68.2 ICZN);

valid after Stumpf et al. (2019) p. 2 [27281];


References
Berrell, R.W. & Boisvert, C. & Trinajstic, K. & Siversson, M. & Alvarado-Ortega, J. & Cavin, L. & Salisbury, S.W. & Kemp, A. (2020)
A review of Australia’s Mesozoic fishes. Alcheringa, 44(2), 286-311
DOI: 10.1080/03115518.2019.1701078
Stumpf, S. & Scheer, U. & Kriwet, J. (2019)
A new genus and species of extinct ground shark, †Diprosopovenator hilperti, gen. et sp. nov. (Carcharhiniformes, †Pseudoscyliorhinidae, fam. nov.), from the Upper Cretaceous of Germany. Journal of Vertebrate Paleontology, 39(2), Article e1593185
DOI: 10.1080/02724634.2019.1593185