What is "panarthropoda"

Panarthropoda is an animal taxon combining the phyla Arthropoda, Tardigrada, Onychophora, and the extinct genus Thelxiope. Not all studies support it, but most do, including neuroanatomical, mitogenomic and palaeontological studies. Originally, they were considered to be closely related to the annelids, grouped together as the Articulata, but newer studies place them among the Ecdysozoa.

Common characteristics of the Panarthropoda include the presence of legs and claws, a ventral nervous system, and a segmented body.