Demirastrites convolutus (Hisinger). Fossil graptolites from Silurian, Wenlockian 433.4 - 427.4 million years ago. Cyrtograptus

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Silurian, Wenlockian Graptolites, Demirastrites convolutus (Hisinger)

Demirastrites convolutus

Demirastrites convolutus

gr12

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