Subphylum Acrania Haeckel (vertebrate)
Parent taxon: Vertebrata according to H. Gadow 1898
See also Jaekel 1911
Sister taxa: Agnatha, Ammopus, Anaspidomorphi, Apedolepis, Artenolepis, Cephalaspidomorpha, Craniota, Cyclostomata, Cyclostomi, Eosaurus, Eotetrapoda, Galeaspida, Gnathostomata, Herpetichthyes, Hoplichnus, Hypichthyes, Lepidotosaurus, Mannodon, Myzichthyes, Ophis, Osteostracomorphi, Ostracophori, Pachycardia, Palaeoxyris, Petromyzontomorphi, Pituriaspida, Protetrapoda, Pteraspidomorphi, Saurornia, Thelodontomorphi, Thoracophis, Tidaeus, Toxichnus, Zamponiopteron, Myxinomorphi, Conodontomorpha, Coluber arcuatus, Myllokunmingiiformes
Subtaxa: none
Ecology:
Distribution: there are no occurrences of Acrania in the database