| Ceraurinus | |
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| C. icarus fossil | |
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| Genus: | Ceraurinus |
Ceraurinus is an extinct genus of trilobite in the order Phacopida. It contains one species, C. serratus.
| Ceraurinus | |
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| C. icarus fossil | |
| Scientific classification | |
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| Genus: | Ceraurinus |
Ceraurinus is an extinct genus of trilobite in the order Phacopida. It contains one species, C. serratus.
 | This Phacopida-related article is a stub. You can help Wikipedia by expanding it. |
Cheiruridae is a family of phacopid trilobites of the suborder Cheirurina. Its members, as with other members of the suborder, had distinctive pygidia modified into finger-like spines. They first appeared in the uppermost Cambrian, and persisted until the end of the Middle Devonian (Givetian). Currently about 657 species assigned to 99 genera are included.
The Verulam Formation is a geologic formation and Lagerstätte in Ontario, Canada. It preserves fossils dating back to the Katian stage of the Ordovician period, or Shermanian to Chatfieldian in the regional stratigraphy.