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 Proasaphiscus rigidus Egorova & Savitsky 1968]Datum citace: 7. duben 2020
Lemke U. (2019): Catalogue of the available names and non available names of the species and subspecies for the class Trilobita [jako Proasaphiscus rigidus Egorova & Savitsky 1968]