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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]


  1. ^ a b Derek E. G. Briggs (1978). "The morphology, mode of life, and affinities of Canadaspis perfecta (Crustacea: Phyllocarida), Middle Cambrian, Burgess Shale, British Columbia". Philosophical Transactions of the Royal Society B: Biological Sciences. 281 (984): 439–487. doi:10.1098/rstb.1978.0005. JSTOR 2418038. 
  2. ^ Mikko Haaramo (March 11, 2008). "†Proschizoramia". Mikko's Phylogeny Archive. Retrieved February 10, 2010.