fossil marine animal genera Linnaeus, 1758 - animals Phylum Chordata Bateson, 1885 - chordates Chordata Bateson, 1885 - chordates see Phylum Chordata Bateson, 1885 Class Cephalaspidomorphi Moy-Thomas & Mile, 1971 Order Petromyzoniformes see Order Petromyzontiformes Berg, 1940