Circulocrania
| Circulocrania Temporal range: Early Ordovician (Floian) | |
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Trilobita |
| Order: | Asaphida |
| Superfamily: | Cyclopygoidea |
| Family: | Cyclopygidae |
| Genus: | Circulocrania Fortey, 1987 |
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,[1] approximately 478 to 471 million years ago.
References
- 1 2 Sepkoski, Jack (2002). "A compendium of fossil marine animal genera (Trilobita entry)". Bulletins of American Paleontology. 364: 560. Archived from the original on 2006-09-05. Retrieved 2008-01-12.
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