. Catalogue of casts of fossils, from the principal museums of Europe and America, with short descriptions and illustrations. Fossils. 136 MOLLUSCA. No- 595. Phragmoceras maximum, Conrad. In this genus the shell is more tightly coiled than in any of the preceding Orthoceratidce. This species—the largest one known—is from the Hamilton Group (Devonian) of Madison Co., N. Y. Diameter, 14. Price, $ No. 596. Phragmoceras nestor, Hall. From the Niagara Group (Upper Silurian), Wauwatosa, Wis. Price, $ No. 597. Phragmoceras SUbvenitriC0S1im,D'Archiac and DeVerneuil. From the Middle Devonian
. Catalogue of casts of fossils, from the principal museums of Europe and America, with short descriptions and illustrations. Fossils. 136 MOLLUSCA. No- 595. Phragmoceras maximum, Conrad. In this genus the shell is more tightly coiled than in any of the preceding Orthoceratidce. This species—the largest one known—is from the Hamilton Group (Devonian) of Madison Co., N. Y. Diameter, 14. Price, $ No. 596. Phragmoceras nestor, Hall. From the Niagara Group (Upper Silurian), Wauwatosa, Wis. Price, $ No. 597. Phragmoceras SUbvenitriC0S1im,D'Archiac and DeVerneuil. From the Middle Devonian of the Eifel, Shine Valley. Original in the Ward Museum of the University of Rochester. Price, $ No. 598. Cyrtoceras macro stomum, Hall. This slightly incurved shell is from the Trenton limestone (Lower Silurian), Mineral Point, Wisconsin. Price. $ No. 599. Cyrtoceras COrbulatum, Barrande. • Two specimens. A form with singularly plaited and abundant septa from the Upper Silurian of Bohemia. Original in the Ward Museum of the Univer- sity of Rochester. Price, $ No. 600. Cyrtoceras elongatum. Barrande. An elegant form from the Upper Silurian of Beraun, Bohemia. The origi- nal is in the Ward Museum of the University of Rochester. Price, $ No. 601. Cyrtoceras eugenium, Hall. This perfect specimen is from the Schoharie Grit (Devonian), Schoharie Co., New York. Size, 7x2. Price, $ No. 602, G-yroceras trivolvis, Conrad. From the Upper Helderberg (Devonian) of Scho- harie Co., N. Y. Diameter, 6. Price, $ No. 603. G-yroceras Burlingtonense, Owen. In this, the most Nautiloid form of the Orthoceratidce, the whorls of the shell nearly touch. From the Lower Carboniferous Limestone of Burlington, Iowa. Diameter, 15. Price, $ No. 604. G-yroceras expariSUm, Ssemann. From the Hamilton Group (Devonian), Cazenovia, New York. Price, $ Please note that these images are extracted from scanned page images that may have been digitally enhanced for readabi
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectfossils, bookyear1866
