Ursulinacaris
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| Ursulinacaris Temporal range: | |
|---|---|
| Appendages from the Mount Cap Formation | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Order: | †Radiodonta |
| Family: | †Hurdiidae |
| Genus: | †Ursulinacaris |
| Species: | †U. grallae |
| Binomial name | |
| †Ursulinacaris grallae Pates et al. 2019 | |
Ursulinacaris is a genus of hurdiid radiodont from the Cambrian of North America. It contains one known species, Ursulinacaris grallae. It was described in 2019, based on fossils of the frontal appendages discovered in the 1990s and thereafter. The endites of Ursulinacaris were very slender, unlike other hurdiids such as Peytoia or Hurdia.[1] It was initially reported as the first hurdiid with paired endites (a feature only present in other non-hurdiid radiodonts), but Moysiuk & Caron (2021) suggested that it is actually the preservation of the fossils and therefore there are no paired endites.[2][3]