†subfamily Hammatocneminae Kielan 1960 (trilobite)
Trilobita - Phacopida - Pliomeridae
Alternative spelling: Hammatocnemidae
Parent taxon: Pliomeridae according to Z. Q. Zhou and Z. Y. Zhou 2019
See also Adrain 2011
Sister taxa: Anapliomera, Benedettia, Colobinion, Cybelopsinae, Encrinurella, Evropeites, Gogoella, Guizhoupliomerops, Hintzeia, Ibexaspis, Josephulus, Leiostrototropis, Lemureops, Liexiaspis, Obliteraspis, Parapliomera, Perissopliomera, Placoparia, Pliomera, Pliomerella, Pliomeridius, Pliomerina, Pliomerinae, Protoencrinurella, Protopliomerella, Protopliomerops, Pseudomera, Rossaspis
Subtaxa: Ovalocephalus
Ecology: fast-moving low-level epifaunal carnivore
Distribution: