Taxon - Links and literature
Paleobiology Database [18661]
Paleobiology Database [https://paleobiodb.org/] [as Retha]
Data retrieved on: 30 January 2016
The Interim Register of Marine and Nonmarine Genera [1333131]
Rees, T. (compiler): The Interim Register of Marine and Nonmarine Genera [https://www.irmng.org] [as Retha Cox, 1965]
Data retrieved on: 29 November 2019