Placodermi - Arthrodira - Holonematidae

Parent taxon: Holonematidae according to R. Denison 1978

See also Sepkoski 2002

Sister taxa: Belemnacanthus, Deirosteus, Deveonema, Holonema, Megaloplax, Rhenonema, Tiaraspis, Tropidosteus

Subtaxa: Gyroplacosteus butovi Gyroplacosteus panderi Gyroplacosteus vialowi

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Ecology: nektonic carnivore

Distribution: found only at Wietrznia Zone II (Devonian of Poland)

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Specimen images are retrieved through the ePANDDA API.