. Annual report. New York State Museum; Science; Science. Stropheodonta patersoni protype praecedens reticulated by concentric elevated striae. Superinduced on this ornament are, as a species character in S. patersoni, con- centric discontinuous corrugations affecting chiefly the intervals between the primary striae. These occur faintly and sporadically in S. inequiradiata. Billings figures [Palaeoz. Foss. pi. 2, fig. 3] from division 1 of the Gaspe series, between Cape Rosier and Grande Greve a specimen identified as S. varistriata Conrad in which such corrugated exterior is present, and we h
. Annual report. New York State Museum; Science; Science. Stropheodonta patersoni protype praecedens reticulated by concentric elevated striae. Superinduced on this ornament are, as a species character in S. patersoni, con- centric discontinuous corrugations affecting chiefly the intervals between the primary striae. These occur faintly and sporadically in S. inequiradiata. Billings figures [Palaeoz. Foss. pi. 2, fig. 3] from division 1 of the Gaspe series, between Cape Rosier and Grande Greve a specimen identified as S. varistriata Conrad in which such corrugated exterior is present, and we have already commented on this structure. He also insists that there is no distinction between this shell (and species) and S. inequi- radiata except that the former is of smaller size. Compari- son of typical material representing these species however demon- strates that notwithstanding the common possession of the cor-. 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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