They gained a separate phylum when the phylum Aschelminthes was split.
They gained a separate phylum when the phylum Aschelminthes was split. Consisting of about 2,000 species overall, most free-living, they live primarily in fresh water. Distinguishing characteristics include a pseudocoelem (soo-do-CEE-lum), a pharynx with hard, tiny jaws called a mastax, and a ciliated corona by the head. Colloquially, they are called wheel animacules. FTP identify this phylum, named because their anterior cilia resemble a rotating wheel.
They gained a separate phylum when the phylum Aschelminthes was split.
{Rotifers} or Rotifera