Sánchez, Teresa M. Ucumariidae new family (Bivalvia, Anomalodesmata) and other bivalves from the Early Ordovician (Tremadocian) of northwestern Argentina - Buenos Aires Asociación Paleontológica Argentina 2003 - pp. 415-424 ilus. Subjects--Topical Terms: ANOMALODESMATABIVALVIAECUMARIIDAEORDOVICICO INFERIORTREMADOCIANO Subjects--Geographic Terms: ARGENTINAJUJUY