Collected papers, Volumen11842 |
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Términos y frases comunes
abruptly Andrew Sherwood angles angular apertures beak beds bifurcations Brachiopoda branches Bryozoum cardinal carina Cayuga lake cell apertures character Chemung group closely arranged collector concave convex Dalmanites Deloo depressed Devonian diameter dissepiments distant dorsal valve elevated Eurypterus extremities fauna Fenestrules flattened foramen Formation and locality fossils frond G. B. Simpson genus Geological formation Geological position gibbous GONIATITES Hamilton group Helderberg hinge hinge-line incurved JAMES HALL lamellæ length limestone lines of growth Livingston county lobe longitudinal Lower Helderberg group maculæ margins mesial fold miles millimetres N.Y. Vol narrow nearly New-York nodes non-poriferous side oblique Orthis oval Phil plates plications portion position and locality prominent radiating striæ RHYNCHONELLA ridges Riemann rocks rounded sandstone Schoharie county septa serratures shales shell Silurian sinus slightly space of five species Specimens collected SPIRIFER strata striæ striated Strophomena Surface marked Tioga county transverse Upper Helderberg ventral valve volutions York