Taxon - Odkazy a literatura
Paleobiology Database [110815]
Paleobiology Database [https://paleobiodb.org/] [jako Flexicalymene planilabra Stumm & Kauffman, 1958]
Datum citace: 24. prosinec 2015
Lemke U. (2019): Catalogue of the available names and non available names of the species and subspecies for the class Trilobita [jako Flexicalymene (Flexicalymene) planilabra Stumm & Kauffman 1958]Datum citace: 28. únor 2020