PSEUDOATRYPA KESLINGI, A NEW MIDDLE DEVONIAN BRACHIOPOD FROM THE LONG LAKE LIMESTONE, ALPENA COUNTY, MICHIGAN, U.S.A.

摘要

— A new species, Pseudoatrypa keslingi, is described from the Middle Devonian Genshaw Member of the Long Lake Limestone, in Alpena County, Michigan. An abundant species in the Genshaw Member and Ferron Point Formation, P. keslingi was originally illustrated in Ehlers and Kesling (1970) as Atrypa sp., but never formally named. A holotype and three paratypes are designated herein, and a complete description of the new species is given, based on 273 measured specimens from both the taxonomic collection and three stratigraphic collections in the University of Michigan Museum of Paleontology.