. College collection of palaeontology. No. 366. Rhynchonella capax, Con. (Rhj'uchonella increbescens, Hall). This genus begins in the Lower Silurian; 500 species are found fossil, and only six living. These specimens are from the Cincinnati Group, Waj'nesville, Ohio. No. 367. Rhynchonella pleurodon, Phil. Carboniferous, Longuiddry, near Edinburgh, ScotJand. No. 368. [737, Cast]. Rhynchonella speciosa, Munst. From the Middle Oolite, Kelheira, Bavaria. No, 369. Rhychonella varians, d'Orb. Oolite, Voegisheim, Baden. No. 370. Pentamerus oblongus, Sow. This fossil has a verj' wide distribution acro
. College collection of palaeontology. No. 366. Rhynchonella capax, Con. (Rhj'uchonella increbescens, Hall). This genus begins in the Lower Silurian; 500 species are found fossil, and only six living. These specimens are from the Cincinnati Group, Waj'nesville, Ohio. No. 367. Rhynchonella pleurodon, Phil. Carboniferous, Longuiddry, near Edinburgh, ScotJand. No. 368. [737, Cast]. Rhynchonella speciosa, Munst. From the Middle Oolite, Kelheira, Bavaria. No, 369. Rhychonella varians, d'Orb. Oolite, Voegisheim, Baden. No. 370. Pentamerus oblongus, Sow. This fossil has a verj' wide distribution across the Silurian basin of the New York system, where it serves to mark and name a constant horizon—that of the "Lower Pentamerus ; The genus is represented by 52 species in the Devonian and Upper Silurian. From the Niagara Group (Upper Silurian), Yellow Springs, No. 371. Pentamerus oblongus, Sow. Clinton Group, Rochester, N. Y. FAMILY ATRYPID^, Shell fibrous; beak curved; hinge-margin curved, with strong teeth; no area; dorsal valve with spiral lamellae directed toward opposite valve. Very similar to 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 Ward's Natural Science Establishment, inc. Rochester
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