Taxon - Links and literature
Paleobiology Database [188200]
Paleobiology Database [https://paleobiodb.org/] [as Petrotypus Zalessky, 1950]
Data retrieved on: 24 December 2015
The Interim Register of Marine and Nonmarine Genera [1133447]
Rees, T. (compiler): The Interim Register of Marine and Nonmarine Genera [https://www.irmng.org] [as Petrotypus Zalesskii, 1950]
Data retrieved on: 13 February 2020