Taxon - Odkazy a literatura
World Register of Marine Species (WoRMS) [488452]
WoRMS Editorial Board: World Register of Marine Species (WoRMS) [http://www.marinespecies.org], VLIZ
The Interim Register of Marine and Nonmarine Genera [1200073]
Rees, T. (compiler): The Interim Register of Marine and Nonmarine Genera [https://www.irmng.org] [jako Penion P. Fischer, 1884]
Datum citace: 22. leden 2020
Paleobiology Database [11500]
Paleobiology Database [https://paleobiodb.org/] [jako Penion Fischer, 1884]
Datum citace: 12. prosinec 2015
Paleobiology Database [90701]
Paleobiology Database [https://paleobiodb.org/] [jako Berylsma Iredale, 1924]
Datum citace: 23. prosinec 2016
Paleobiology Database [90623]
Paleobiology Database [https://paleobiodb.org/] [jako Verconella Iredale, 1914]
Datum citace: 23. prosinec 2016