Trilobita - Missisquoiidae

Parent taxon: Missisquoiidae according to P. A. Jell and J. M. Adrain 2003

Sister taxa: Hardyia, Lunacrania, Missisquoia, Parakoldinioidia, Tangshanaspis, Tasmanocephalus

Subtaxa: Pseudokoldinioidia bifurcata

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Ecology: fast-moving low-level epifaunal carnivore