in the Ecdysozoa, and relegating the annelids to the third major clade ofbilaterians, theLophotrochozoa, it had to be assumed that either segmentation evolved independently in annelids and arthropods, or if in fact homologous, segmentation must have been lost in many other animal phyla. ...
The superphylum Ecdysozoa contains an incredibly large number of species. This is because it contains two of the most diverse animal groups: phylum Nematoda (the roundworms) and Phylum Arthropoda (the arthropods). The most prominant distinguising feature of Ecdysozoans is their tough external ...
Ecdysozoa is a clade composed of eight phyla: the arthropods, tardigrades and onychophorans that share segmentation and appendages and the nematodes, nematomorphs, priapulids, kinorhynchs and loriciferans, which are worms with an anterior proboscis or introvert. Ecdysozoa contains the vast ...
Phyla of Animals:The animal kingdom is divided into 34 phyla, which are grouped together into superphyla, and multiple clades, until they all come together at some primordial animal ancestor. Of all the animal phyla, Arthropoda contains the most species, with about 1.25 million out of 1.5 ...
The superphylum Ecdysozoa contains an incredibly large number of species. This is because it contains two of the most diverse animal groups: phylum Nematoda (the roundworms) and Phylum Arthropoda (the arthropods). The most prominant distinguising feature of Ecdysozoans is their tough external ...