Taxon - Odkazy a literatura
Lemke U. (2019): Catalogue of the available names and non available names of the species and subspecies for the class Trilobita [jako Cyphaspis stigmatophthalmus (Rud. Richter 1914)]Datum citace: 29. únor 2020
Paleobiology Database [299399]
Paleobiology Database [https://paleobiodb.org/] [jako Otarion stigmatophthalmus (Richter, 1914)]
Datum citace: 11. prosinec 2015