Cicero
More ideas from Cicero
Paleozoic Earth - Orthoceratites & trilobites on the bottom of an Ordovician sea 480 million years ago; Iapetus Ocean; Phoibic Ocean; Tornquist Sea; Paleoasiatic Ocean; Ural Ocean; Rheic Ocean - Natural History Illustration

Paleozoic Earth - Orthoceratites & trilobites on the bottom of an Ordovician sea 480 million years ago; Iapetus Ocean; Phoibic Ocean; Tornquist Sea; Paleoasiatic Ocean; Ural Ocean; Rheic Ocean - Natural History Illustration

cephalopods from the Mesozoic which teemed in immense schools through the reptile-haunted oceans of that bygone era. Yet belemnites were certainly not the only cephalopods which swam in the Mesozoic seas. Numerous shelled cephalopods—the ammonites—were widespread in every sort of marine habitat.

cephalopods from the Mesozoic which teemed in immense schools through the reptile-haunted oceans of that bygone era. Yet belemnites were certainly not the only cephalopods which swam in the Mesozoic seas. Numerous shelled cephalopods—the ammonites—were widespread in every sort of marine habitat.