Temporal range: Cambrian Stage 3
Vladicaris is an arthropod known from the Lower Cambrian. It has been attributed to the Crustacea, and if it does indeed belong in the crown group of that subphylum, it would be the earliest known representative of the group. Its position within the Crustacea is unclear – it has been allied with the Phyllocarida and the Branchiopoda.
- Chlupáč, I., "Lower Cambrian arthropods from the Paseky Shale (Barrandian area, Czech Republic)", Journal of the Czech Geological Society, 40 (4): 9–36
- Bergström, J.; Xian-guang, H. (2003), "Arthropod origins", Bulletin of Geosciences, 78 (4): 323–334
- Xian-Guang Hou, Jan Bergström & Guang-Hui Xu (2004), "The Lower Cambrian crustacean Pectocaris from the Chengjiang Biota, Yunnan, China", Journal of Paleontology, 78 (4): 700–708, doi:10.1666/0022-3360(2004)078<0700:TLCCPF>2.0.CO;2, JSTOR 4094899.
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