Taxon - Odkazy a literatura
The Interim Register of Marine and Nonmarine Genera [1420127]
Rees, T. (compiler): The Interim Register of Marine and Nonmarine Genera [https://www.irmng.org] [jako Monoptygma Lea, 1833]
Datum citace: 30. listopad 2019
Paleobiology Database [12032]
Paleobiology Database [https://paleobiodb.org/] [jako Actaeopyramis Fischer, 1885]
Datum citace: 11. prosinec 2015
Paleobiology Database [11379]
Paleobiology Database [https://paleobiodb.org/] [jako Monoptygma]
Datum citace: 11. prosinec 2015