Palaeontology, Teil 1U.S. Government Printing Office, 1877 - 197 Seiten |
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Inhalt
Ammonitoid forms of the Upper | 8 |
DESCRIPTIONS OF FOSSILSSILURIAN SPECIES | 17 |
Anomia rætiformis | 25 |
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abruptly Acad Ammonites angles angular aperture apparently Arcestes basal margin beaks belong body-volution calice Cañon Carboniferous cardinal characters Coalville columella compressed concave convex coral corallites corallum costa costæ Cretaceous curve depressed Devonian diameter differs distinct distinctly dorsal Dorsal valve ears Edmondia figured flattened Foss fossils furrows Gabb genus Geol gibbous Goniatites Hayden's hinge inch incurved inner Inoceramus internal cast lateral lobe lateral margins left valve Length less limestone lines of growth Locality Meek mesial mesial sinus middle narrow narrowly rounded nearly Nevada numerous oblique obscure outer outline Palæont periphery Philad Plate 17 pleuræ posterior basal posterior margin Productus Professor prominent pygidium ridge right valve seen septa showing side view Silurian Simpson's Report Expl slightly smaller Sowerby species specimens spire Spirifer striæ Surface ornamented suture tabulæ transverse umbilicus umbonal region umbonal slopes upper ventral valve vertical volutions Wasatch Range West Humboldt Range White Pine