Euchelicerata - Chasmataspidida - Chasmataspididae

Parent taxon: Chasmataspidida according to J. A. Dunlop et al. 2003

See also Bergström 1975 and Dunlop et al. 2020

Sister taxa: Chasmataspidacea, Diploaspididae, Heteroaspididae, Kiaeria

Subtaxa: Chasmataspis

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Type: Chasmataspis

Ecology:

Distribution: found only at Blackford 'sinkhole', Douglas Lake (Ordovician of Tennessee)

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