Sipuncula

Animal Cell - ... Metazoa   "Radiata"       Cnidaria       Ctenophora (comb jellies)   Bilateria    Protostomia       Acoelomorpha       Platyhelminthes (flatworms)       Nemertina (ribbon worms)       Gastrotricha       Gnathostomulida (jawed worms)       Gastrotricha       Gnathostomulida (jawed worms)       Annelida (segmented worms)       Tardigrada (water bears)       Onychophora (velvet worms)       Arthropoda (insects, etc)       Phoronida       Ectoprocta (moss animals)       Brachiopoda    Deuterostomia       Echinodermata       Chaetognatha (arrow worms)       Cycliophora       Mollusca (mollusks)       Sipuncula (peanut worms)       Cycliophora       Mollusca (mollusks)       Sipuncula (peanut worms)       Hemichordata (acorn worms)       Tardigrada (water bears)       Onychophora (velvet worms)       Tardigrada (water bears)       Onychophora (velvet worms)       Hemichordata (acorn worms)       Cycliophora       Mollusca (mollusks)       Sipuncula (peanut worms)       Chordata (vertebrates, etc) Animals are generally considered to have evolved from flagellate protozoa. For personal use only. Titles in ...