Cheiruridae
Cheiruridae is a family of phacopid trilobites of the suborder Cheirurina. Its members, as with other members of the suborder, had distinctive pygidial modified into finger-like spines. They first appeared in the uppermost Cambrian (upper Furongian), and persisted until the end of the Middle Devonian (Givetian). Currently about 657 species assigned to 99 genera are included.
| Cheiruridae Temporal range: | |
|---|---|
| Paraceraurus exsul, Middle Ordovician, St. Petersburg region, Russia | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | †Trilobita |
| Order: | †Phacopida |
| Suborder: | †Cheirurina |
| Family: | †Cheiruridae Hawle & Corda, 1847 |
| Subfamilies | |
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