Petromyzontida - Cephalaspidiformes

Full reference: E. B. Branson and M. G. Mehl. 1931. The Journal of Geology. 39(6):509-531

Parent taxon: Osteostraci according to R. S. Sansom 2009

Sister taxa: Aachenaspis, Fieldingaspis, Meelaidaspis, Ohesaareaspis, Tuvaspis, Yvonaspis, Zenaspidida, Benneviaspidiformes, Benneviaspidida, Tremataspidiformes, Tremataspidida, Waengsjoeaspis, Cornuata, Thyestiida, Ateleaspidiformes

Subtaxa: Camptaspis utahensis

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Type: Camptaspis utahensis

Ecology: fast-moving nektonic carnivore

Distribution: found only at Blacksmith Fork (Devonian of Utah)

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Specimen images are retrieved through the ePANDDA API.