Trilobita - Proetida - Dimeropygidae

Full reference: B.D.E. Chatterton, G. D. Edgecombe, B.G. Waisfeld and N.E. Vaccari. 1998. Ontogeny and systematics of Toernquistiidae (Trilobita, Proetida) from the Ordovician of the Argentine Precordillera. Journal of Paleontology 72(2):273-303

Belongs to Chomatopyge according to B.D.E. Chatterton et al. 1998

Sister taxa: Chomatopyge falcata, Chomatopyge marginifera

Type specimen: CEGH-UNC 16934, a pygidium. Its type locality is LA a, Las Aguaditas North Section, ~5.5 km west and ~9.5 km south of San José da Jáchal, which is in a Llanvirn marine mudstone/chert in the Las Aguaditas Formation of Argentina.

Ecology: fast-moving low-level epifaunal deposit feeder