Placodermi - Pseudopetalichthyida
Alternative spellings: Pseudopetalichthida, Pseudopetalichthyidae
Parent taxon: Placodermi according to G. C. Young 2010
See also Denison 1975, Denison 1978, Dineley and Metcalf 1999, Nelson et al. 2016, Sepkoski 2002 and van der Laan 2019
Sister taxa: Acanthothoraci, Acanthothoraciformes, Antiarchi, Arthrodira, Asiacanthus, Austroptyctodus, Bianchengichthys, Brindabellaspida, Campbellodus, Changyonophyton, Coccostei, Coelosteichthys, Cratoselachiidae, Deinodus, Entelognathus, Hybosteus, Neopetalichthys, Nessariostoma, Oestophorus, Petalichthida, Petalichthyida, Petalichthyida, Pseudopetalichthyiformes, Ptychostei, Ptyctodontida, Rhenanida, Rhenaniformes, Sedowichthys, Stensioelliformes, Tollichthys, Wangolepis, Yunnanacanthus
Subtaxa: none
Ecology: nektonic carnivore
Distribution: there are no occurrences of Pseudopetalichthyida in the database