†order Merospondyli Cope 1887 (ray-finned fish)
Actinopteri - Protacanthopterygii
Full reference: E. D. Cope. 1887. Zittel's Manual of Palaeontology. The American Naturalist 21(11):1014-1019
Parent taxon: Actinopterygia according to E. D. Cope 1887
Sister taxa: Chondrostei, Lysopteri, Melanecta, Neopterygii, Woodichthys
Subtaxa: Sauropsidae, Sphaerodontidae
Ecology: