Taxon - Odkazy a literatura
Paleobiology Database [19285]
Paleobiology Database [https://paleobiodb.org/] [jako Opsidiscus Westergard, 1949]
Datum citace: 30. leden 2016
The Interim Register of Marine and Nonmarine Genera [1355998]
Rees, T. (compiler): The Interim Register of Marine and Nonmarine Genera [https://www.irmng.org] [jako Opsidiscus Westergard, 1949]
Datum citace: 23. leden 2020
The Interim Register of Marine and Nonmarine Genera [1296177]
Rees, T. (compiler): The Interim Register of Marine and Nonmarine Genera [https://www.irmng.org] [jako Aulacodiscus Westergård, 1946]
Datum citace: 8. prosinec 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. [jako Opsidiscus WESTERGÅRD, 1950]Datum citace: 11. říjen 2011