Taxon - Odkazy a literatura
The Interim Register of Marine and Nonmarine Genera [1430720]
Rees, T. (compiler): The Interim Register of Marine and Nonmarine Genera [https://www.irmng.org] [jako Clarella Howell, 1934]
Datum citace: 8. prosinec 2019
Paleobiology Database [19367]
Paleobiology Database [https://paleobiodb.org/] [jako Clarella Howel, 1934]
Datum citace: 11. prosinec 2015
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 Clarella HOWELL, 1933]Datum citace: 11. říjen 2011