Natantia
Template:Short description Natantia (Boas, 1880) is an obsolete taxon of decapod crustaceans, comprising those families that move predominantly by swimming – the shrimp (comprising Caridea and Procarididea), prawns (Dendrobranchiata) and boxer shrimp. The remaining Decapoda were placed in the Reptantia, and consisted of crabs, lobsters and other large animals that move chiefly by walking along the bottom.<ref name="Bauer">Template:Cite book</ref> The division between Natantia and Reptantia was replaced in 1963, when Martin Burkenroad erected the suborder Pleocyemata for those animals that brood their eggs on the pleopods, leaving Dendrobranchiata for the prawns.<ref name="Bauer"/> Under this system, Natantia is a paraphyletic group. Burkenroad's primary division of Decapoda into Dendrobranchiata and Pleocyemata has since been corroborated by molecular analyses.<ref>Template:Cite book</ref>
The name Natantia Owen, 1851 was utilized in a phylogenetic context by Madzia and Cau (2017) as the most exclusive mosasaurid clade including Mosasaurus and Tylosaurus but not Halisaurus.<ref>OwenR.1851. AhistoryofBritishfossilreptiles.In:SectionII:thefossilReptiliaofthe Cretaceousperiod. London:Cassell&CompanyLimited,155–210.</ref><ref>Madzia and Cau (2017). Inferring ‘weakspots’ in phylogenetic trees: application to mosasauroid nomenclature. PeerJ5:e3782;DOI10.7717/peerj.3782</ref>