Pristiophorus laevis
Engelbrecht, Mörs, Reguero & Kriwet, 2016
Classification: Elasmobranchii Pristiophoriformes Pristiophoridae
Reference of the original description
A new sawshark, Pristiophorus laevis, from the Eocene of Antarctica with comments on Pristiophorus lanceolatus. Historical Biology, 29(6), 841–853
A new sawshark, Pristiophorus laevis, from the Eocene of Antarctica with comments on Pristiophorus lanceolatus. Historical Biology, 29(6), 841–853
Types
Pristiophorus laevis
Holotype: NRM-PZ: P. 16055; Paratype: NRM-PZ: P. 16056; NRM-PZ: P. 16057; NRM-PZ: P. 15914; NRM-PZ: P. 15934; NRM-PZ: P. 16058; NRM-PZ: P. 16059; NRM-PZ: P. 16060; NRM-PZ: P. 16061; NRM-PZ: P. 16064; NRM-PZ: P. 16062-16063;
Pristiophorus laevis
Holotype: NRM-PZ: P. 16055; Paratype: NRM-PZ: P. 16056; NRM-PZ: P. 16057; NRM-PZ: P. 15914; NRM-PZ: P. 15934; NRM-PZ: P. 16058; NRM-PZ: P. 16059; NRM-PZ: P. 16060; NRM-PZ: P. 16061; NRM-PZ: P. 16064; NRM-PZ: P. 16062-16063;
Description:
Citation: Pristiophorus laevis Engelbrecht, Mörs, Reguero & Kriwet, 2016: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 04/2024
Description
Original diagnose after Engelbrecht et al. (2017) p. 845 [25208]: A new species of Pristiophorus defined by the following combination of dental characters: Teeth with low, broad, and rather pointed principal cusp in labial view. Apex of cusp significantly curved lingually. No lateral cusplets. Labial crown face completely smooth, devoid of any ornamentation such as striae or costules. Broad lobed distal and mesial part of crown with distinct cutting edge; not reaching to the apex of the central cusp. Apron broad with semicircular labial edge, not well separated and overhanging root labially and laterally forming a distinct rim. Horizontal or slightly oblique ridges present lingually below crown (depending on jaw position) shoulders and on uvula. Uvula is prominent and rather broad. Tooth root high with few foramina on the lingual side.
Original diagnose after Engelbrecht et al. (2017) p. 845 [25208]: A new species of Pristiophorus defined by the following combination of dental characters: Teeth with low, broad, and rather pointed principal cusp in labial view. Apex of cusp significantly curved lingually. No lateral cusplets. Labial crown face completely smooth, devoid of any ornamentation such as striae or costules. Broad lobed distal and mesial part of crown with distinct cutting edge; not reaching to the apex of the central cusp. Apron broad with semicircular labial edge, not well separated and overhanging root labially and laterally forming a distinct rim. Horizontal or slightly oblique ridges present lingually below crown (depending on jaw position) shoulders and on uvula. Uvula is prominent and rather broad. Tooth root high with few foramina on the lingual side.
References
A new sawshark, Pristiophorus laevis, from the Eocene of Antarctica with comments on Pristiophorus lanceolatus. Historical Biology, 29(6), 841–853
DOI: 10.1080/08912963.2016.1252761
A new sawshark, Pristiophorus laevis, from the Eocene of Antarctica with comments on Pristiophorus lanceolatus. Historical Biology, 29(6), 841–853
DOI: 10.1080/08912963.2016.1252761
