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Waptia Fossil range: Middle Cambrian PreЄ Є O S D C P T J K Pg N A fossil (top) and reconstruction of Waptia Scientific classification Kingdom: Animalia Phylum: Arthropoda (unranked): Crustaceanomorpha Order: Waptiida† Family: Waptiidae Genus: Waptia Species: W. fieldensis Binomial name Waptia fieldensis Walcott, 1912 Waptia fieldensis was a small, shrimp-like stem group crustacean. Many Cambrian crustaceomorphs such as Waptia lack the mouthparts to be classified as crown group crustaceans that lived during the Middle Cambrian about 510 million years ago. 454 specimens of Waptia are known from the Greater Phyllopod bed, where they comprise 0.86% of the community.[1] Behaviour Waptia-like arthropods discovered in the Chengjiang form chains of up to 20 individuals, with each animal's tail nested in the carapace of the one behind. These chains must have been rigid to be preserved.[2] References Paleontology portal ^ Caron, J. -B.; Jackson (2006). "Taphonomy of the Greater Phyllopod Bed community, Burgess Shale". PALAIOS 21 (5): 451–465. doi:10.2110/palo.2003.P05-070R.  edit ^ Xian-Guang Hou, Derek J. Siveter, Richard J. Aldridge & David J. Siveter (2008). "Collective behavior in an Early Cambrian arthropod". Science 322 (5899): 224. doi:10.1126/science.1162794. PMID 18845748.  External links Picture and fossil of the species This prehistoric arthropod-related article is a stub. You can help Wikipedia by expanding it. v • d • e