†family Ptyctodontidae Woodward 1891 (armour-plated fish)

Placodermi - Ptyctodontiformes - Ptyctodontidae

Synonym: Aulacosteidae Fowler 1947

Parent taxon: Ptyctodontiformes according to R. van der Laan 2019

See also Bryant 1932, Denison 1975, Denison 1978, Denison 1985, Hay 1902 and Jordan 1963

Sister taxa: none

Subtaxa: Acmoniodus Aulacosteus Chelyophorus Ctenurella Desmoporella Eczematolepis Goniosteus Materpiscis Palaeomylus Ptyctodopsis Ptyctodus Ramphodus Rhynchodus Rinodus

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Type: Aulacosteus

Ecology: nektonic carnivore

Distribution:

• Carboniferous of the United Kingdom (1 collection)

• Devonian of Australia (1), Belarus (2), Germany (2), Iran (1), Latvia (2), Poland (1), the Russian Federation (3), United States (9: Iowa, Michigan, Missouri)

Total: 22 collections including 26 occurrences

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