Bivalvia - Nuculida - Praenuculidae

Full reference: T. M. Sanchez. 1999. New late Ordovician (Early Caradoc)Bivalves from the Sierra De Villicum (Argentine Precordillera). Journal of Paleontology 73(1):66-76

Parent taxon: Praenuculinae according to T. M. Sanchez 1999

Sister taxa: Cuyopsis, Villicumia

Subtaxa: Trigonoconcha acuta

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Type: Trigonoconcha acuta

Ecology: facultatively mobile shallow infaunal deposit feeder