Taxon - Links and literature
Paleobiology Database [116369]
Paleobiology Database [https://paleobiodb.org/] [as Spergo Dall, 1895]
Data retrieved on: 13 December 2015
The Interim Register of Marine and Nonmarine Genera [1040641]
Rees, T. (compiler): The Interim Register of Marine and Nonmarine Genera [https://www.irmng.org] [as Spergo Dall, 1895]
Data retrieved on: 30 November 2019