Taxon - Odkazy a literatura
The Interim Register of Marine and Nonmarine Genera [1301198]
Rees, T. (compiler): The Interim Register of Marine and Nonmarine Genera [https://www.irmng.org] [jako Halichoerus Nilsson, 1820]
Datum citace: 30. listopad 2019
Paleobiology Database [72116]
Paleobiology Database [https://paleobiodb.org/] [jako Halichoerus Nilsson, 1820]
Datum citace: 11. prosinec 2015