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 Calliops angusta Cooper 1953]Datum citace: 3. březen 2020
Paleobiology Database [178289]
Paleobiology Database [https://paleobiodb.org/] [jako Calliops angusta Cooper, 1953]
Datum citace: 1. duben 2020