Taxon - Odkazy a literatura
Novikoff A., Barabasz-Krasny B. (2015): System of Embryophytes [https://phytomorphology.org/personal-inf...], Plant Systematics: 23-63. Liga-Pres [jako Kalymma Unger in R. Richter et Unger]Datum citace: 4. leden 2020
The Interim Register of Marine and Nonmarine Genera [1087167]
Rees, T. (compiler): The Interim Register of Marine and Nonmarine Genera [https://www.irmng.org] [jako Kalymma Unger in R. Richter & Unger, 1856]
Datum citace: 7. únor 2020
Paleobiology Database [157163]
Paleobiology Database [https://paleobiodb.org/] [jako Kalymma Unger, 1856]
Datum citace: 11. prosinec 2015