Trilobozoa, Precambrian Tri-Radial Organisms

Representatives of Trilobozoa, a group of tri-radially symmetrical animals, were re-examined based on the material from a new, extensive collection of macrofossils from the Late Ediacaran (Vendian) sediments of the southeastern White Sea region. In addition to body imprints, the collection contains specimens suggesting that trilobozoans could move independently. The shield-like body of trilobozoans consisted of three antimeres. Each antimere has a cluster of grooves on the outer surface and an inner cavity. The system of branched grooves is interpreted as a ciliary organ for gathering food particles, and the elongated inner cavities associated with it are interpreted as digestive organs. It is suggested that trilobozoans were slow-moving benthic seston-feeders of a coelenterate level of organization