Trilobita - Phacopida - Calymenidae

Parent taxon: Calymeninae according to J. M. Adrain and G. D. Edgecombe 1997

Sister taxa: Alcymene, Arcticalymene, Diacalymene

Subtaxa: Calymene australis, Calymene breviceps, Calymene bufo, Calymene celebra, Calymene niagarensis

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Ecology: nektobenthic carnivore