Polyplacophora - Paleoloricata - Mattheviidae

Full reference: B.L. Stinchcomb and G. Darrough. 1995. Some molluscan problematica from the Upper Cambrian - Lower Ordovician of the Ozark uplift. Journal of Paleontology 69(1):52-65

Parent taxon: Mattheviidae according to J., Jr. Pojeta et al. 2010

Sister taxa: Calceochiton, Chelodes, Eukteanochiton, Hemithecella, Matthevia, Spicuchelodes

Subtaxa: Robustum nodum, Robustum phallerium

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Ecology: facultatively mobile epifaunal grazer