Taxon - Odkazy a literatura
Paleobiology Database [223954]
Paleobiology Database [https://paleobiodb.org/] [jako Ptychopterinia Isberg, 1934]
Datum citace: 23. prosinec 2016
The Interim Register of Marine and Nonmarine Genera [1239745]
Rees, T. (compiler): The Interim Register of Marine and Nonmarine Genera [https://www.irmng.org] [jako Ptychopterinia Isberg, 1934]
Datum citace: 29. listopad 2019