Illustrations of Devonian Fossils: Gasteropoda, Pteropoda, Cephalopoda, Crustacea and Corals of the Upper Helderberg, Hamilton and Chemung GroupsWeed, Parsons, 1876 - 7 Seiten |
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Albertype aperture BELLEROPHON Bierstadt Canandaigua Lake Cayuga Lake cell-walls cells Chemung group Clarence Hollow compressed specimen convex crust CYATHOPHYLLUM CYRTOCERAS DALMANITES Descriptions diameters diaphragms Dist Dorsal view enlargement epitheca explanation of Plate FAVOSITES FAVOSITIDE Fifteenth Rep figure fragment glabella Goniatite limestone GONIATITES GYROCERAS Hall Hamilton group Hist imperfect specimen internal cast lamellæ large individual large specimen larger Lateral view Livingston county longitudinal section LOXONEMA N. Y. Fig N. Y. State Cab N. Y. Surv Ohio Onondaga county opposite sides ORTHOCERAS outer chamber outer volution Palæontology N. Y. Vol Palæontology of N. Y. PLATYCERAS preceding specimen Proetus Profile view pygidium Schoharie county Schoharie grit septa septal lines shell showing the form siphuncle small specimen soft shales Species of Fossils specimen fig specimen preserving specimen showing spines spire surface characters surface markings Thirteenth Rep Three views UNIVERSITY OF ILLINOIS UPPER HELDERBERG GROUP Upper Helderberg limestone volution Western New York