Tergomya - Tryblidiida - Tryblidiidae

Full reference: E. L. Yochelson. 1958. Some Lower Ordovician monoplacophoran mollusks from Missouri. Journal of the Washington Academy of Sciences 48(1):8-14

Parent taxon: Tryblidiidae according to B. Runnegar and P.A. Jell 1976

Sister taxa: Archaeophialinae, Archinacellina, Drahomira, Drahomirinae, Kotysium, Litavina, Neopilininae, Peelipilina, Pentalina, Pilinopsis, Pragamira, Proplina, Proplininae, Retipilina, Tryblidiinae, Tryblidium, Undicornu

Subtaxa: Bipulvina croftsae, Bipulvina liaoningensis

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Ecology: epifaunal grazer