. Catalogue of casts of fossils, from the principal museums of Europe and America, with short descriptions and illustrations. Fossils. CEPHALOPODA. 135 No. 586. Orthoceras crebram, Ssemann. From the Middle Devonian, Eifel, Rhine Valley, and now in the private Geo- logical Cabinet of Mr. Ward, Rochester. Price, $ No. 587. Orthoceras inequale, Barr. This species of a very niuch attenuated form is from the Upper Silurian, Butowitz, Bohemia, and now in the private Geological Cabinet of Mr. Ward, Rochester. ' Size, 13x3. Price, $ No. 588. Orthoceras pseudo-calamiteum, Barr. This is a nea
. Catalogue of casts of fossils, from the principal museums of Europe and America, with short descriptions and illustrations. Fossils. CEPHALOPODA. 135 No. 586. Orthoceras crebram, Ssemann. From the Middle Devonian, Eifel, Rhine Valley, and now in the private Geo- logical Cabinet of Mr. Ward, Rochester. Price, $ No. 587. Orthoceras inequale, Barr. This species of a very niuch attenuated form is from the Upper Silurian, Butowitz, Bohemia, and now in the private Geological Cabinet of Mr. Ward, Rochester. ' Size, 13x3. Price, $ No. 588. Orthoceras pseudo-calamiteum, Barr. This is a neat, ornamental form, in which the outer shell with its peculiar markings is preserved. From the Upper Silurian, Kronieprus, Bohemia, and now in the private Geological Cabinet of Mr. Ward, Rochester. Price, $ No. 589. Ormoceras temiifilum, Hail. Two specimens. This sub-genus of Orthoceras includes those forms which have the siphuncular beads constricted in the mid- dle. These specimens are sections showing septa. From the Black River limestone (Lower Silurian), Watertown, NewYork. Size, 6x3. Price, $ No. 590. Endoceras proteiforme, Hall. This sub-genus has a large siphuncle, mostly lateral or eccentric, marked or ridged on the outer surface by the septa. Within the siphuncle are one or more very elongated conical tubes, often one within another, as shown in the present specimen. From the Trenton limestone (Lower Silurian), Middleville, N. Y. Size, 12 x 3. Price, $ No. 591. G-onioceras anceps, Hail. This specimen is a section showing wavy lines of septa. From the Black River limestone (Lower Silurian), Watertown, N. Y. Size, 6x4. Price, $ No. 592. G-omphoceras inflatum, Quenst. This genus is characterized by an abrupt tapering or contraction of the last chamber towards the mouth ; which latter is frequently of a very sinuate and irregular form. This specimen, which shows the septa and the last chamber, is from the Middle Devonian of the Eifel, Rhine Valley, and
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectfossils, bookyear1866
