Taxon - Odkazy a literatura
Paleobiology Database [19207]
Paleobiology Database [https://paleobiodb.org/] [jako Delagnostus Opik, 1961]
Datum citace: 24. prosinec 2015
The Interim Register of Marine and Nonmarine Genera [1211785]
Rees, T. (compiler): The Interim Register of Marine and Nonmarine Genera [https://www.irmng.org] [jako Delagnostus Öpik, 1961]
Datum citace: 30. listopad 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 Delagnostus ÖPIK, 1961]Datum citace: 11. říjen 2011