†suborder Petalichthyida Jaekel 1911 (armour-plated fish)

Placodermi - Petalichthyida

Alternative spelling: Petalichthida

Synonym: Petalichthyiformes

Full reference: O. Jaekel. 1911. Die Wirbeltiere. Eine Übersicht über die Fossilen und Lebenden Formen [The Vertebrates. An Overview of the Fossil and Living Forms] viii-252

Parent taxon: Placodermi according to G. C. Young 2010

See also Grande and Eastman 1986, Long 2011 and Nelson et al. 2016

Sister taxa: Acanthothoraci, Acanthothoraciformes, Antiarcha, Antiarchiformes, Arthrodira, Asiacanthus, Austroptyctodus, Brindabellaspida, Campbellodus, Changyonophyton, Coccostei, Coelosteichthys, Deinodus, Hybosteus, Neopetalichthys, Nessariostoma, Oestophorus, Petalichthida, Petalichthyida, Phyllolepida, Pseudopetalichthyida, Pseudopetalichthyiformes, Ptychostei, Ptyctodontida, Rhenanida, Rhenaniformes, Sedowichthys, Stensioellida, Tollichthys, Yunnanacanthus

Subtaxa: none

Ecology: nektonic carnivore

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