†Padunoceratidae Balaschov 1960

Balashov 1960. New Nautiloidea from the Ordovician of the U.S.S.R. Trud Vses Nauch-Issled Gheol Inst, 2 1960: 123-145

Balaschov 1960. New Ordovician Nautiloids from Russia. Markovsku, B. P. [Editor] New species of prehistoric plants and invertebrates of the U.S.S.R. pt. 2. Russia., Minist, geol. okh. Nedr S.S.S.R., Moskva", 1960: 123-136. Chapter pagination: 123-136