Taxon - Odkazy a literatura
Paleobiology Database [20014]
Paleobiology Database [https://paleobiodb.org/] [jako Koptura Resser & Endo, 1935]
Datum citace: 30. leden 2016
The Interim Register of Marine and Nonmarine Genera [1017504]
Rees, T. (compiler): The Interim Register of Marine and Nonmarine Genera [https://www.irmng.org] [jako Koptura Resser & Endo in Kobayashi, 1935]
Datum citace: 30. listopad 2019
The Interim Register of Marine and Nonmarine Genera [1224512]
Rees, T. (compiler): The Interim Register of Marine and Nonmarine Genera [https://www.irmng.org] [jako Parakoptura Guo & Duan, 1978]
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 Koptura RESSER & ENDO in KOBAYASHI, 1935]Datum citace: 11. říjen 2011