Taxon - Odkazy a literatura
Paleobiology Database [29458]
Paleobiology Database [https://paleobiodb.org/] [jako Neospirifer Fredericks, 1919]
Datum citace: 13. prosinec 2015
The Interim Register of Marine and Nonmarine Genera [1010345]
Rees, T. (compiler): The Interim Register of Marine and Nonmarine Genera [https://www.irmng.org] [jako Neospirifer Fredericks, 1924]
Datum citace: 13. únor 2020