Abstract:
The second of a six-part monograph on brachiopods from the reference area for the North American Permian in mountain ranges of West Texas and adjacent New Mexico, this volume presents a historical resumé of the ordinal classification of the Brachiopoda, definitions of morphological terms, techniques of measuring specimens, and remarks on the naming of species. The major part of the work consists of descriptions and illustrations of genera and species in the inarticulate superfamilies Discinacea and Craniacea and the articulate superfamilies Eichwaldiacea, Orthotetacea, Derbyiacea, and Lyttoniacea.
