Xenocarida (from the Greek for strange shrimp) is a proposed clade inside the subphylumCrustacea that comprises two classes that were discovered in the 20th century: Remipedia and Cephalocarida. Both groups are marine hermaphrodites.[1][2] The clade was recovered as the sister groups to Hexapoda (including insects).[3]
However, other studies do not recover Xenocarida as a monophyletic group[4][5] and variously find Branchiopoda or Remipedia as the hexapod sister group[6][7][4][5]
^Jerome C. Regier; Jeffrey W. Shultz; Andreas Zwick; April Hussey; Bernard Ball; Regina Wetzer; Joel W. Martin & Clifford W. Cunningham (2010). "Arthropod relationships revealed by phylogenomic analysis of nuclear protein-coding sequences". Nature. 463 (7284): 1079–1083. Bibcode:2010Natur.463.1079R. doi:10.1038/nature08742. PMID20147900. S2CID4427443.