Hypolophodon sylvestris

(WHITE, 1931)


Classification: Elasmobranchii Myliobatiformes Dasyatidae

Reference of the original description
WHITE, E.I. (1931)
The vertebrate faunas of the English Eocene. I. From the Thanet Sands to the Basement Bed of the London Clay. British Museum (Natural History): 121 p., 162 fig.

Image of the original description

Hypolophus sylvestris WHITE, 1931 Fig. 94-108 in White, 1931

Synonyms / new combinations and misspellings
Dasyatis sylvestris, Hypolophodon ypresiensis, Hypolophus aff. sylvestris, Hypolophus farreri, Hypolophus sylvestris, Hypolophus sylvestris mohuliyi, Platyrhina ypresiensis

Types
Hypolophodon sylvestris

Hypolophus sylvestris
Holotype: NHMUK: P.14616a;

Images of types

Description:


Citation: Hypolophodon sylvestris (WHITE, 1931): In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 03/2021

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Description
Original diagnose after White (1931) p. 70 [2532]: A species of Hypolophus known only by isolated teeth (and dermal tubercles). Teeth similar in form, arrangement and size to those of the living H. sephen (Forskal), but sides of crown always sloping inwards and overhanging the root, and median lateral teeth of upper jaw relatively wider. (Dermal tubercles variable in size and shape; larger forms longer than wide, with upper surface ornamented with numerous grooves radiating from a small, much elevated central spine sloping backwards, and large root convex and smooth; smaller tubercles similar but rounded, with vertical median spine.)

Remarks
valid after Cappetta (1980) p. 39 [328]; Cvancara & Hoganson (1993) p. 11 [596]; Case (1996) p. 10 [397]; Ebersole et al. (2019) p. 118 [27789];

References
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