Cretalamna feldmanni
Hoganson, Erickson & Holland, 2019
Classification: Elasmobranchii Lamniformes Otodontidae
Reference of the original description
Chondrichthyan and Osteichthyan Paleofaunas from the Cretaceous (Late Maastrichtian) Fox Hills Formation of North Dakota, USA: Paleoecology, Paleogeography, and Extinction. Bulletins of American Paleontology, 398, 1–94
Chondrichthyan and Osteichthyan Paleofaunas from the Cretaceous (Late Maastrichtian) Fox Hills Formation of North Dakota, USA: Paleoecology, Paleogeography, and Extinction. Bulletins of American Paleontology, 398, 1–94
Synonyms / new combinations and misspellings
Cretalamna cf. feldmanni
Cretalamna cf. feldmanni
Images of types
Description:
Citation: Cretalamna feldmanni Hoganson, Erickson & Holland, 2019: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 12/2024
Please send your images of "Cretalamna feldmanni" to info@shark-references.com
Cretalamna feldmanni sp. nov., holotype, upper left lateral (UND-PC 15903); 8.5, labial view; 8.6, lingual view © Hoganson et al. (2019)
Cretalamna feldmanni sp. nov., holotype, upper left lateral (UND-PC 15903); 8.5, labial view; 8.6, lingual view © Hoganson et al. (2019)
Description
Original diagnose after Hoganson et al. (2019) p. 25 [27441]: Known only from upper left lateral tooth characterized by prominent central cusp flanked on each side by single well-developed cusplets possessing basal extensions of the enamel cutting surface just beyond the edge of the root. Entire crown margin is a smooth cutting edge having cusplets separated from cusp only by deep groove that is nearly covered by enamel at top of cusps. Entire crown surface is nonstriated. Upper one-third of cusp gently flexed lingually, no prominent central lingual bulge. Root with insignificant central foramen. Root has characteristic quadrate shape formed by distinct, straight-sided lobes at anterior and posterior tips, anterior being longer, from which lower margins of root converge on mesial position of the root, forming distinct straight V-shaped lower edge of tooth. Tooth large, only slightly wider than long.
Original diagnose after Hoganson et al. (2019) p. 25 [27441]: Known only from upper left lateral tooth characterized by prominent central cusp flanked on each side by single well-developed cusplets possessing basal extensions of the enamel cutting surface just beyond the edge of the root. Entire crown margin is a smooth cutting edge having cusplets separated from cusp only by deep groove that is nearly covered by enamel at top of cusps. Entire crown surface is nonstriated. Upper one-third of cusp gently flexed lingually, no prominent central lingual bulge. Root with insignificant central foramen. Root has characteristic quadrate shape formed by distinct, straight-sided lobes at anterior and posterior tips, anterior being longer, from which lower margins of root converge on mesial position of the root, forming distinct straight V-shaped lower edge of tooth. Tooth large, only slightly wider than long.
References
First Report of Elasmobranchii and Osteichthyans from the Fox Hills Formation (Late Cretaceous), Poison Springs Locality, Northeastern Colorado. Transactions of the Kansas Academy of Science, 125(3-4), 195–232
DOI: 10.1660/062.125.0310
Chondrichthyan and Osteichthyan Paleofaunas from the Cretaceous (Late Maastrichtian) Fox Hills Formation of North Dakota, USA: Paleoecology, Paleogeography, and Extinction. Bulletins of American Paleontology, 398, 1–94
First Report of Elasmobranchii and Osteichthyans from the Fox Hills Formation (Late Cretaceous), Poison Springs Locality, Northeastern Colorado. Transactions of the Kansas Academy of Science, 125(3-4), 195–232
DOI: 10.1660/062.125.0310
Chondrichthyan and Osteichthyan Paleofaunas from the Cretaceous (Late Maastrichtian) Fox Hills Formation of North Dakota, USA: Paleoecology, Paleogeography, and Extinction. Bulletins of American Paleontology, 398, 1–94
