Circulocrania is an extinct genus from a well known class of fossil marine arthropods, the trilobites. It lived during the later part of the Arenig stage of the Ordovician Period, approximately 478 to 471 million years ago.
| Identifier (URI) | Rank |
|---|---|
| dbkwik:resource/XmBPNdDbSJ0dDH1ZTsHM-Q== | 5.88129e-14 |
| dbr:Circulocrania | 5.88129e-14 |
![[RDF Data]](/fct/images/sw-rdf-blue.png)
