. Bulletin - New York State Museum. Science. SOME NEW DEVON IC FOSSILS 223 Prosocoelus pes-anseris Zeiler & Wirtgen var. occidentalis nov. The genus Prosocoelus was established by Keferstein in 1857 and was first applied to the species Grammysia pes-an- seris Zeiler & Wirtgen^ by Beushausen^ and the latter author subsequently described several species from Coblentzian horizons. The hinge in the genus is characterized by its strong and large, curved umbonal teeth, two in number, with the uppermost the larger, and in the left valve a small triangular anterior tooth; a. Please note that t
. Bulletin - New York State Museum. Science. SOME NEW DEVON IC FOSSILS 223 Prosocoelus pes-anseris Zeiler & Wirtgen var. occidentalis nov. The genus Prosocoelus was established by Keferstein in 1857 and was first applied to the species Grammysia pes-an- seris Zeiler & Wirtgen^ by Beushausen^ and the latter author subsequently described several species from Coblentzian horizons. The hinge in the genus is characterized by its strong and large, curved umbonal teeth, two in number, with the uppermost the larger, and in the left valve a small triangular anterior tooth; a. 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; New York State Museum. Albany : New York State Education Dept
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