. Annual report. New York State Museum; Science; Science. Prosocoelus pes-anser occidentalis broad ligament area with longitudinal groove. The exterior bears two or three strong divergent ridges. In P. pes-anseris these surface ridges have an extreme of development. It is of extraordinary interest to rind this genus, not before known outside the typical regions of the Coblentzian, present in the fauna of central Maine and by a species which bears so strong a resemblance to P. pes-anseris as to make comparison there- with more reasonable than with any other of the known forms. The shells from t
. Annual report. New York State Museum; Science; Science. Prosocoelus pes-anser occidentalis broad ligament area with longitudinal groove. The exterior bears two or three strong divergent ridges. In P. pes-anseris these surface ridges have an extreme of development. It is of extraordinary interest to rind this genus, not before known outside the typical regions of the Coblentzian, present in the fauna of central Maine and by a species which bears so strong a resemblance to P. pes-anseris as to make comparison there- with more reasonable than with any other of the known forms. The shells from this fauna are usually elongate, broader behind than in front, nearly twice as long as high, with two strongly 1Singhofen. Jahrb. des Vereins fur Naturkunde im Herzogthum Nassau. 2Beitr. zur. Kenntn. d. Oberharzer Spiriferensandsteins. 1884. p. 109. 1851. p. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original New York State Museum. Albany : University of the State of New York
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