Trilobita - Ptychopariida - Antagmidae

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

Sister taxa: Bilimbataia, Crassifimbra, Erzishania, Lermontoviella, Longshania, Mantoushania, Onchocephalina, Onchocephalus, Oreisator, Paraantagmus, Periomma, Sombrerella, Xiangqianaspis, Xiaomajiella, Yuehsienszella

Subtaxa: Antagmus dapingensis

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Ecology: fast-moving low-level epifaunal carnivore