Aschelminthes

noun plural

Asc·​hel·​min·​thes ˌask-ˌ(h)el-ˈmin-ˌthēz 

in former classifications

: a phylum of pseudocoelomate animals including the major taxa Rotifera, Gastrotricha, Kinorhyncha, Nematoda, Nematomorpha, and sometimes the Acanthocephala all of which are sometimes regarded as independent phyla