Taxon - Links and literature
Paleobiology Database [11500]
Paleobiology Database [https://paleobiodb.org/] [as Penion Fischer, 1884]
Data retrieved on: 12 December 2015
Paleobiology Database [90701]
Paleobiology Database [https://paleobiodb.org/] [as Berylsma Iredale, 1924]
Data retrieved on: 23 December 2016
Paleobiology Database [90623]
Paleobiology Database [https://paleobiodb.org/] [as Verconella Iredale, 1914]
Data retrieved on: 23 December 2016
The Interim Register of Marine and Nonmarine Genera [1200073]
Rees, T. (compiler): The Interim Register of Marine and Nonmarine Genera [https://www.irmng.org] [as Penion P. Fischer, 1884]
Data retrieved on: 22 January 2020
World Register of Marine Species (WoRMS) [488452]
WoRMS Editorial Board: World Register of Marine Species (WoRMS) [http://www.marinespecies.org], VLIZ