Sidneyia
| Sidneyia Temporal range: | |
|---|---|
| Reconstruction of Sidneyia inexpectans | |
| Fossil of S. inexpectans | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Clade: | †Artiopoda |
| (unranked): | †Vicissicaudata |
| Genus: | †Sidneyia Walcott, 1911 |
| Type species | |
| †Sidneyia inexpectans Walcott, 1911 | |
| Species | |
| |
Sidneyia is an extinct marine arthropod known from fossils found from the Early to the Mid Cambrian of China and the Mid Cambrian Burgess Shale of British Columbia, Canada.