Geisenoceras is an extinct cephalopod from the Devonian period, about 400 million years ago, resembling a squid with a long, pointed shell. The lighter parts of the fossil show shell cavities used for buoyancy, while the dark areas are surrounding rock. Once thought to be a single species (Orthoceras regulare), scientists later identified over 2,500 distinct conical-shelled nautiloid species, making classification a complex task.
A perfect addition for your fossil collection.
You will receive a similar item as pictured -- this is a natural product; color, size, and condition may vary
