Trilobita - Phacopida - Pharostomatidae

Synonym: Colpocoryphoides Harrington and Leanza 1957

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

Sister taxa: Pharostoma, Prionocheilus

Subtaxa: Colpocoryphoides trapezoidalis, Pharostomina mexicana

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Ecology: fast-moving low-level epifaunal carnivore