A holoplanktonic Snail, type member of the family Coelodiscidae inside Prosobranchia. This is the oldest known holoplanktonic gastropod, thanks to bilateral symmetrical shells as an adaption to active swimming. Also the most common of the sea snails on the Clay Pit of Dobbertin, where is one of the most varied in size terms, with some of the biggest specimens of this snail from the Lower Toarcian know. It has been related to large floating driftwood as one of the primary settlers.
