Taxon - Odkazy a literatura
Paleobiology Database [42877]
Paleobiology Database [https://paleobiodb.org/] [jako Strepsiportax Pilgrim, 1937]
Datum citace: 23. prosinec 2016
Paleobiology Database [42846]
Paleobiology Database [https://paleobiodb.org/] [jako Protragocerus Deperet, 1887]
Datum citace: 23. prosinec 2016
The Interim Register of Marine and Nonmarine Genera [1198565]
Rees, T. (compiler): The Interim Register of Marine and Nonmarine Genera [https://www.irmng.org] [jako Protragocerus Depéret, 1887]
Datum citace: 30. listopad 2019
The Interim Register of Marine and Nonmarine Genera [1151893]
Rees, T. (compiler): The Interim Register of Marine and Nonmarine Genera [https://www.irmng.org] [jako Strepsiportax Pilgrim, 1937]
Datum citace: 8. prosinec 2019