Parasphaerorthoceras
Extinct genus of nautiloids / From Wikipedia, the free encyclopedia
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Parasphaerorthoceras is an extinct orthocerid genus, a nautiloid cephalopod, that lived in what would be Europe and north Africa during the Silurian from 422.9 to 418.1 mya, having existed for approximately 4.8 million years.[1]
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Genus: | Parasphaerorthoceras Ristedt 1968 |
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