Taxon - Links and literature
Paleobiology Database [11088]
Paleobiology Database [https://paleobiodb.org/] [as Etrema Hedley, 1918]
Data retrieved on: 13 December 2015
The Interim Register of Marine and Nonmarine Genera [1429843]
Rees, T. (compiler): The Interim Register of Marine and Nonmarine Genera [https://www.irmng.org] [as Etrema Hedley, 1918]
Data retrieved on: 30 November 2019
The Interim Register of Marine and Nonmarine Genera [1193415]
Rees, T. (compiler): The Interim Register of Marine and Nonmarine Genera [https://www.irmng.org] [as Etremopa Oyama, 1953]
Data retrieved on: 8 December 2019