Mesetaraja maleficapelli
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
Description:
Citation: Mesetaraja maleficapelli Engelbrecht, Mors, Reguero & Kriwet, 2019: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 04/2024
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Description
Original diagnose after Engelbrecht et al. (2019) p. 1037 [27541]: Extinct rajid known only by a single tooth that is characterized by the following combination of dental characteristics: small tooth (approximately 1 mm wide); crown wider than root; crown completely smooth and consists of a labio-lingually broad but mesio-distally narrow cusp with accessory labial and lingual apices that are arranged labio-lingually (central one being the highest); cusp and accessory cusplets give cusp a ragged profile; anterior accessory cusplet slightly hook-shaped; basal crown face asymmetrical and ovate; short, broad and rounded labial apron; distinct lingual uvula absent; basal crown base forms a slightly convex rim around cusp.
Original diagnose after Engelbrecht et al. (2019) p. 1037 [27541]: Extinct rajid known only by a single tooth that is characterized by the following combination of dental characteristics: small tooth (approximately 1 mm wide); crown wider than root; crown completely smooth and consists of a labio-lingually broad but mesio-distally narrow cusp with accessory labial and lingual apices that are arranged labio-lingually (central one being the highest); cusp and accessory cusplets give cusp a ragged profile; anterior accessory cusplet slightly hook-shaped; basal crown face asymmetrical and ovate; short, broad and rounded labial apron; distinct lingual uvula absent; basal crown base forms a slightly convex rim around cusp.
Remarks
shark-references Species-ID=15501;
type species of Mesetaraja Engelbrecht et al., 2019 p. 1037 [27541] by original designation (Art. 68.2 ICZN);
valid after Engelbrecht et al. (2019) p. 1037 [27541];
shark-references Species-ID=15501;
type species of Mesetaraja Engelbrecht et al., 2019 p. 1037 [27541] by original designation (Art. 68.2 ICZN);
valid after Engelbrecht et al. (2019) p. 1037 [27541];
References
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
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
