†suborder Calymenina Swinnerton 1915 (trilobite)
Parent taxon: Phacopida according to J. M. Adrain 2011
See also Harrington and Leanza 1957
Sister taxa: Calpmenella, Cheirurina, Frenerinuroides, Phacopina, Sambremeusapis, Typhloiscus
Subtaxa: Bathycheilidae Bavarillidae Calymenidae Homalonotidae Pharostomatidae
Ecology: fast-moving low-level epifaunal carnivore