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A new crab, Rogueus orri n. gen. and sp. (Decapoda: Brachyura), from the Lookingglass Formation (Ulatisian Stage: lower middle Eocene) of southwestern Oregon

Published online by Cambridge University Press:  19 May 2016

Ross E. Berglund  and
Rodney M. Feldmann
Ross E. Berglund
Affiliation:
11689 N. E. Sunset Loop, Bainbridge Island, Washington 98110
Rodney M. Feldmann
Affiliation:
Department of Geology, Kent State University, Kent, Ohio 44242
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Abstract

A new genus and species of raninid crab, Rogueus orri, is described from the Tenmile Member of the Lookingglass Formation in southwestern Oregon. Based upon previous studies of foraminiferans, the rock unit has been assigned an early middle Eocene age. Distinct from other raninids with its sinuous fronto-orbital margin, bifid rostrum, and uniquely branched anterolateral teeth, Rogueus orri may be descended from Notopocorystes (Cretacoranina) fritschi.

Type
Research Article
Information
Journal of Paleontology , Volume 63 , Issue 1 , January 1989 , pp. 69 - 73
Copyright
Copyright © The Paleontological Society 

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