Proceedings of the American Philosophical Society Held at Philadelphia for Promoting Useful Knowledge, Volumen32American Philosophical Society., 1838 |
Contenido
Proceedings Commemorative of the One Hundred and Fiftieth | 3 |
GREETINGS | 54 |
LIST OF DELEGATES | 155 |
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Términos y frases comunes
abdomen amber AMER Ammonoidea Ammonoids ananeanic substage ananepionic aperture apex Aphetoceras apical appears arcuate auxiliary vein Barrande Cenoceras characteristics characters Cladura closely coiled contact furrow costæ costations cross vein described diameter discal cell distinct dorsal furrow dorsal lobes dorsum electrical ephebic stage Estonioceras Eutrephoceras femora figured Florissant fossil genera genus gerontic gerontic stage gyroceran Heer hind femora hyponomic impressed zone involution Kaiser legs Length of wings lines of growth Lituites living chamber Loew long as broad longitudinal vein magnet marginal cell metanepionic substage Nautiloidea Nautiloids Nautilus Nautilus pompilius neanic stage nepionic stage Nostoceras observed ontogeny Osten Sacken outline paranepionic substage PHILOS plates posterior cell præfurca PROC Prof protoconch Ptychoceras Radoboj saddles Schroederoceras septa septum shown Silurian similar siphuncle Society species specimen sutures tertiary tibiæ tion Tipula transverse Trocholites tubercles umbilical perforation venter ventral ventro-dorsal volution whorl XXXII young