Infraorder Achelata Scholtz and Richter 1995 (decapod)
Parent taxon: Pleocyemata according to C.E. Schweitzer and R.M. Feldmann 2024
See also Hegna et al. 2020, Poore and Ahyong 2004 and Wolfe et al. 2019
Sister taxa: Astacidea, Axiidea, Caridea, Gebiidea, Polychelida, Procaridea, Reptantia, Stenopodea, Stenopodidea
Subtaxa: Cancrinidae Lessinoachela Palinura Palinuridae Palinuroidea Polzicaris Scyllaridae
Ecology: epifaunal carnivore