Taxon - Odkazy a literatura
The Interim Register of Marine and Nonmarine Genera [1210703]
Rees, T. (compiler): The Interim Register of Marine and Nonmarine Genera [https://www.irmng.org] [jako Petasmaria Cooper & Dubro, 1982]
Datum citace: 13. únor 2020
Paleobiology Database [28780]
Paleobiology Database [https://paleobiodb.org/] [jako Petasmaria]
Datum citace: 11. prosinec 2015