However, placozoans from old cultures may go through a degenerative phase where they can form into nearly spherical moribund structures (Grell and Benwitz, 1971; reviewed in Thiemann and Ruthman, 1990)
However, placozoans from old cultures may go through a degenerative phase where they can form into nearly spherical moribund structures (Grell and Benwitz, 1971; reviewed in Thiemann and Ruthman, 1990). 6a. to the simplest bilaterian animals (with a head, three body cell layers, and bilateral symmetry), the two phyla of flatworms. A key determinant of…