Notes on and description of Oleneothyris fragilis (Morton) 1828 (Brachiopoda, Terebratulidae). American Museum novitates ; no. 2621

Supplemental Materials

Date

1977

Journal Title

Journal ISSN

Volume Title

Publisher

New York, N.Y. : American Museum of Natural History

DOI

DOI

Abstract

"The Oleneothyris biostrome, a well-known stratigraphic marker at the top of the Hornerstown Formation in the Atlantic Coastal Plain, contains two distinct species of a large terebratulid brachiopod. These two species, O. harlani (Morton) and O. fragilis (Morton), may be differentiated by the prominent sulcus and fold, along with two pronounced dorsal ridges on the less robust O. fragilis. The latter species is confined vertically to a lens within the biostrome and geographically to the area around New Egypt, New Jersey. A narrowly triangular, strongly arched loop, characteristically terebratulid, is found to differ slightly from that of O. harlani. Since the holotype of O. fragilis, first described in 1828 by S.G. Morton, is either no longer in existence or lost, a neotype (RU 5700) is herein designated. The neotype is housed in Rutgers University Geological Museum, New Brunswick, New Jersey"--P. [1].

Description

16 p. : ill., map ; 26 cm.
Includes bibliographical references (p. 16).

Keywords

Citation