Orthoceras Fossils
Orthoceras Fossils
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Orthoceras was an ancient cephalopod that lived about 370 million years ago. The name means straight horn, referring to the characteristic long, straight, conical shell. The preserved shell is all that remains of this ancestor of our modern-day squid. There is some confusion around the name. Scientifically orthoceras is a genus name used only for a particular extinct nautiloid cephalopod from the Baltic states and Sweeden. However it is commonly used to refer to any species of extinct nautiloid cephalopod with a straight cone shaped shell.
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