| † Hymenocaris Temporal range: Cambrian |
|
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Subphylum: | Crustacea |
| Class: | Malacostraca |
| Order: | † Hymenostraca Rolfe, 1969 |
| Family: | † Hymenocarididae Haeckel, 1896 |
| Genus: | † Hymenocaris Salter, 1853 |
| Species: | † H. vermicauda |
| Binomial name | |
| † Hymenocaris vermicauda Salter, 1853 |
|
Hymenocaris is a genus of Cambrian crustaceans. Some species originally assigned to Hymenocaris were later transferred to Canadaspis, such as Canadaspis perfecta (Hymenocaris perfecta), leaving only Hymenocaris vermicauda.[1] Differences between Hymenocaris and Canadaspis have been used to justify erecting a separate family, Hymenocarididae and order, Hymenostraca for Hymenocaris,[1] although it is also sometimes placed in the family Canadaspididae and the order Canadaspidida.[2]