Taxon - Odkazy a literatura
Paleobiology Database [103424]
Paleobiology Database [https://paleobiodb.org/] [jako Metrocardia Kříž, 2004]
Datum citace: 13. listopad 2019
The Interim Register of Marine and Nonmarine Genera [1263322]
Rees, T. (compiler): The Interim Register of Marine and Nonmarine Genera [https://www.irmng.org] [jako Metrocardia Kriz, 2004]
Datum citace: 1. prosinec 2019