Trilobita - Ptychopariida - Antagmidae

Full reference: W. T. Zhang, Y. H. Lu, Z. L. Zhu, Y. Y. Qian, H. L. Lin, Z. Zhou, S. Zhang and J. L. Yuan. 1980. Cambrian trilobite faunas of southwestern China. Palaeontologia Sinica, new series B 16:1-497

Parent taxon: Antagmidae according to W. T. Zhang et al. 1980

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

Subtaxa: Xiaomajiella planimarginis

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Type: Xiaomajiella planimarginis

Ecology: fast-moving low-level epifaunal carnivore