Trilobita - Phacopida - Calmoniidae

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

Sister taxa: Anchiopella, Andinacaste, Australoacaste, Bainella, Bouleia, Calmonia, Clarkeaspis, Cryphaeoides, Deltacephalaspis, Eldredgeia, Jujuyops, Kozlowskiaspis, Malvinella, Malvinocooperella, Metacryphaeus, Oosthuizenella, Palpebrops, Parabouleia, Paracalmonia, Phacopina, Plesioconvexa, Plesiomalvinella, Schizostylus, Tarijactinoides, Tibagya, Typhloniscus, Vogesina, Wolfartaspis

Subtaxa: none

Ecology: fast-moving low-level epifaunal carnivore