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 Sphaerexochus valcourensis Shaw & Bolton 2011]Datum citace: 3. březen 2020
Paleobiology Database [189865]
Paleobiology Database [https://paleobiodb.org/] [jako Sphaerexochus valcourensis Shaw & Bolton, 2011]
Datum citace: 1. duben 2020