Raja amphitrita
Engelbrecht, Mors, Reguero & Kriwet, 2019
Classification: Elasmobranchii Rajiformes Rajidae
Reference of the original description
Skates and rays (Elasmobranchii, Batomorphii) from the Eocene La Meseta and Submeseta formations, Seymour Island, Antarctica. Historical Biology, 31(8), 1028–1044
Skates and rays (Elasmobranchii, Batomorphii) from the Eocene La Meseta and Submeseta formations, Seymour Island, Antarctica. Historical Biology, 31(8), 1028–1044
Types
Raja amphitrita
Holotype: NRM-PZ: P16264; Paratype: NRM-PZ: P16259; NRM-PZ: P16260; NRM-PZ: P16261; NRM-PZ: P16262; NRM-PZ: P16263; NRM-PZ: P16258;
Raja amphitrita
Holotype: NRM-PZ: P16264; Paratype: NRM-PZ: P16259; NRM-PZ: P16260; NRM-PZ: P16261; NRM-PZ: P16262; NRM-PZ: P16263; NRM-PZ: P16258;
Description:
Citation: Raja amphitrita Engelbrecht, Mors, Reguero & Kriwet, 2019: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 11/2024
Description
Original diagnose after Engelbrecht et al. (2019) p. 1034 [27541]: Extinct skate only known by isolated teeth that are characterized by the following combination of dental characters: small, cuspidate teeth; high, symmetrical and triangular crown with smooth labial and lingual crown faces; cusp straight to slightly bent towards the posterior; knob-like structure on basal labial crown face; short cutting edges, which are restricted to the upper part of the cusp; lower part of the crown forms a rounded rim extending from the mesial to the distal side of the tooth; distal crown edge concave and mesial crown edge convex to slightly sigmoidal; no labial apron or lingual uvula; high root with root lobes separated by a rather wide but shallow furrow; basal face of the root lobes convex.
Original diagnose after Engelbrecht et al. (2019) p. 1034 [27541]: Extinct skate only known by isolated teeth that are characterized by the following combination of dental characters: small, cuspidate teeth; high, symmetrical and triangular crown with smooth labial and lingual crown faces; cusp straight to slightly bent towards the posterior; knob-like structure on basal labial crown face; short cutting edges, which are restricted to the upper part of the cusp; lower part of the crown forms a rounded rim extending from the mesial to the distal side of the tooth; distal crown edge concave and mesial crown edge convex to slightly sigmoidal; no labial apron or lingual uvula; high root with root lobes separated by a rather wide but shallow furrow; basal face of the root lobes convex.
References
Eocene Shark Teeth From Peninsular Antarctica: Windows to Habitat Use and Paleoceanography. Paleoceanography and Paleoclimatology, 39(11), Article e2024PA004965
DOI: 10.1029/2024PA004965
Skates and rays (Elasmobranchii, Batomorphii) from the Eocene La Meseta and Submeseta formations, Seymour Island, Antarctica. Historical Biology, 31(8), 1028–1044
DOI: 10.1080/08912963.2017.1417403
Eocene Shark Teeth From Peninsular Antarctica: Windows to Habitat Use and Paleoceanography. Paleoceanography and Paleoclimatology, 39(11), Article e2024PA004965
DOI: 10.1029/2024PA004965
Skates and rays (Elasmobranchii, Batomorphii) from the Eocene La Meseta and Submeseta formations, Seymour Island, Antarctica. Historical Biology, 31(8), 1028–1044
DOI: 10.1080/08912963.2017.1417403
