Heterodontus janefirdae

CASE, 1980


Classification: Elasmobranchii Heterodontiformes Heterodontidae

Reference of the original description
CASE, G.R. (1980)
A selachian fauna from the Trent Formation, Lower Miocene (Aquitanian) of Eastern North Carolina. Palaeontographica, Abt. A, 171 (1–3): 75–103,6 fig., 10 pl.

Synonyms / new combinations and misspellings
Heterodontus cf. janefirdae

Types
Heterodontus janefirdae
Holotype: AMNH: 9653; Paratype: AMNH: 9654;


Description:


Citation: Heterodontus janefirdae CASE, 1980: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 02/2021

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Description
Original diagnose after Case (1980) p. 79 [390]: Anterior teeth of a juvenile, crown height approximately 2 mm, and width of the teeth across the three cusps, approximately 2 mm, partially fragmented teeth, missing small portions of the enameloid coating on the lower margins of the crowns, most evident on the labial views, where the central lower portion and the left lower apron of the teeth are missing, while on the lingual sides, the dentinous material is spongy.

Remarks
valid after Case (1980) p. 79 [390];


References
HOVESTADT, D.C. (2018)
Reassessment and revision of the fossil Heterodontidae (Chondrichthyes: Neoselachii) based on tooth morphology of extant taxa. Palaeontos, 30: 73 textpages, 8 textfigures, 3 tables, 44 plates
KRUCKOW, T. & THIES, D. (1990)
Die Neoselachier der Paleokaribik (Pisces: Elasmobranchii). Courier Forschungsinstitut Senckenberg, 119: 1–102
CASE, G.R. (1980)
A selachian fauna from the Trent Formation, Lower Miocene (Aquitanian) of Eastern North Carolina. Palaeontographica, Abt. A, 171 (1–3): 75–103,6 fig., 10 pl.