Trilobita - Ptychopariida - Wuaniidae

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

Sister taxa: Houmaia, Jixianaspis, Rencunia, Ruichengaspis, Wuania, Wuanoides, Wuhushania

Subtaxa: Megagraulos coreanicus, Megagraulos dengfengensis, Megagraulos liaotungensis, Megagraulos obscura

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Type: Megagraulos coreanicus

Ecology: fast-moving low-level epifaunal deposit feeder