Cretalamna cf. 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
Types
Cretalamna cf. feldmanni
Cretalamna cf. feldmanni
Description:
Citation: Cretalamna cf. feldmanni Hoganson, Erickson & Holland, 2019: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 08/2026
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Description
Original diagnosis 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 diagnosis 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.
Remarks
shark-references Species-ID=16459;
shark-references Species-ID=16459;
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
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
