Classes of this phylum include Seisonidea, of which there are only two known species, and Bdelloids which are known for their ability to resist death by cryptobiosis, though by far the largest class is Monogononta.
Classes of this phylum include Seisonidea, of which there are only two known species, and Bdelloids which are known for their ability to resist death by cryptobiosis, though by far the largest class is Monogononta. The final region of their bodies is the foot, ending it a so-called "toe" containing a cement gland, and their bodies are covered by a transparent and flexible cuticle, somewhat similar to arthropods. They possess organs known as trophi contained within the mastax, a hard jaw apparatus. Close relatives of Acanthocephala, their key feature is a corona of cilia that draws a vortex of water into their mouth. FTP, name these so-called "wheel animalcules" that appear to rotate.
Classes of this phylum include Seisonidea, of which there are only two known species, and Bdelloids which are known for their ability to resist death by cryptobiosis, though by far the largest class is Monogononta.
Phylum {Rotifera} or {Rotifer}s