Taxon - Links and literature
Paleobiology Database [28100]
Paleobiology Database [https://paleobiodb.org/] [as Ukoa Opik, 1932]
Data retrieved on: 3 March 2016
The Interim Register of Marine and Nonmarine Genera [1066383]
Rees, T. (compiler): The Interim Register of Marine and Nonmarine Genera [https://www.irmng.org] [as Ukoa Öpik, 1932]
Data retrieved on: 1 December 2019