fossil marine animal genera Linnaeus, 1758 - animals Phylum Chordata Bateson, 1885 - chordates Chordata Bateson, 1885 - chordates see Phylum Chordata Bateson, 1885 Class Cephalaspidomorphi Kiaer & Stensiö, 1920 see Class Osteostraci Lankester, 1868 Order †Atelaspidiformes see Order Cephalaspidiformes Halstead Tarlo, 1967