Petromyzontida - Cephalaspidiformes

Parent taxon: Osteostraci according to D. L. Dineley and S. J. Metcalfe 1999

Sister taxa: Aachenaspis, Fieldingaspis, Ilemoraspis, Oeselaspis, Procephalaspis, Saaremaaspis, Sclerodus, Tannuaspis, Thyestes, Timanaspis, Tuvaspis, Tyriaspis, Cornuata, Tremataspidiformes, Benneviaspidiformes, Benneviaspis, Waengsjoeaspis, Euphaneropidae, Tremataspidida, Thyestiida

Subtaxa: none

Ecology: fast-moving nektonic carnivore

Distribution: found only at Besom Farm Quarry, Shropshire - 'upper Cornstone' (Devonian of the United Kingdom)

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Specimen images are retrieved through the ePANDDA API.