Recurvacanthus uniserialis

DUFFIN, 1981


Classification: Holocephali Chimaeriformes Myriacanthidae

Reference of the original description
DUFFIN, C.J. (1981)
The fin spine of a new holocephalan from the lower jurassic of Lyme Regis, Dorset, England. Géobios, 14 (4): 469–475

Types
Recurvacanthus uniserialis
Holotype: NHMUK: PV P 2850;

Images of types

Description:


Citation: Recurvacanthus uniserialis DUFFIN, 1981: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 03/2021

Please send your images of "Recurvacanthus uniserialis" to info@shark-references.com

Recurvacanthus uniserialis DUFFIN, 1981, Fin spines, NHMUK PV P2850 - holotype, Lower Lias, Sinemurian, Early Jurassic of Lyme Regis, Dorset, UK; B - SMNS 97004, Schwarzjura (Lias) epsilon II 12 Schlacken bed, Posidonienschiefer, Lower Toarcian, Early Jurassic of Kromer Quany (Schieferbruch Kromer),NE of Ohmden, Germany. © Duffin & Joiko (2020)

Description
Original diagnose after Duffin, 1981 p. 470 [4823]: Myriacanthid holocephalan spine showing little lateral compression and a flat posterior wall. Lateral walls ornamented by tubercles. Posterior wall ornamented by a series of four large, strongly curved denticles, located in the midline and pointing downwards. In comparison to other hotocephalan spines, the spine of this genus is quite strongly recurved, especially distally.

Remarks
type species of Recurvacanthus Duffin, 1981 p. 470 [4823] by original designation (Art. 68.2 ICZN);

valid after Duffin, 1981 p. 471 [4823]; Duffin & Joiko (2020) p. 319 [28560];


References
DUFFIN, C. & LARS, J. (2020)
A fin spine of Recurvacanthus (Myriacanthidae, Holocephali) from the Posidonienschiefer (Early Jurassic) of SW Germany. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen Band, 296 (3): 317-326
DOI: 10.1127/njgpa/2020/0908
DUFFIN, C.J. (2010)
Chondrichthyes In Lord, A.R. & Davis, P.G. (Eds.) Fossils from the Lower Lias of the Dorset Coast. Field Guide to Fossils No. 13, 436 pp. Palaeontological Association: Dorchester: pp. 317-340
STAHL, B.J. (1999)
Handbook of Paleoichthyology, Vol. 4: Chondrichthyes III. Holocephali. Verlag Dr. Friedrich Pfeil, 164 pp.
DUFFIN, C.J. (1981)
The fin spine of a new holocephalan from the lower jurassic of Lyme Regis, Dorset, England. Géobios, 14 (4): 469–475
DOI: 10.1016/S0016-6995(81)80122-2