Taxon - Links and literature
Paleobiology Database [19300]
Paleobiology Database [https://paleobiodb.org/] [as Proagnostus Butts, 1926]
Data retrieved on: 14 December 2015
The Interim Register of Marine and Nonmarine Genera [1194521]
Rees, T. (compiler): The Interim Register of Marine and Nonmarine Genera [https://www.irmng.org] [as Proagnostus Butts, 1926]
Data retrieved on: 30 November 2019
The Interim Register of Marine and Nonmarine Genera [1235737]
Rees, T. (compiler): The Interim Register of Marine and Nonmarine Genera [https://www.irmng.org] [as Agnostascus Öpik, 1967]
Data retrieved on: 8 December 2019
Jell P. A., Adrain J. M. (2002): Available generic names for trilobites, Memoirs of the Queensland Museum 48(2): 331-553. Brisbane. ISSN0079-8835. [as Proagnostus BUTTS, 1926]Data retrieved on: 11 October 2011