Trilobita - Proetida - Dimeropygidae

Full reference: H. B. Whittington and W.R., I.I. Evitt. 1953. Silicified Middled Ordovician trilobites. Geological Society of America Memoir 59:1-139

Parent taxon: Dimeropygidae according to J. M. Adrain and S. R. Westrop 2007

Sister taxa: Bearriverops, Chomatopyge, Dimeropyge, Dimeropygiella, Heckethornia, Ischyrophyma, Ischyrotoma, Pseudohystricurus, Toernquistia, Tulepyge

Subtaxa: Mesotaphraspis inornata, Mesotaphraspis parva

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Type: Mesotaphraspis parva

Ecology: fast-moving low-level epifaunal deposit feeder