The
Aschelminthes (sometimes
Aeschelminthes), are an obsolete
phylum of
pseudocoelomate and other similar
animals, including as classes the
Nematoda,
Rotifera,
Gastrotricha,
Kinorhyncha, and
Nematomorpha, and sometimes the
Priapulida and
Entoprocta. Many of these groups are no longer considered closely related and have been promoted to phyla in their own right, and the name is now generally only used as an informal term.
