Taxon - Links and literature
Paleobiology Database [121290]
Paleobiology Database [https://paleobiodb.org/] [as Theta Clark, 1959]
Data retrieved on: 11 December 2015
The Interim Register of Marine and Nonmarine Genera [1301455]
Rees, T. (compiler): The Interim Register of Marine and Nonmarine Genera [https://www.irmng.org] [as Theta A. H. Clarke, 1959]
Data retrieved on: 22 January 2020