Taxon - Odkazy a literatura
Paleobiology Database [28508]
Paleobiology Database [https://paleobiodb.org/] [jako Echyrosia Cooper, 1989]
Datum citace: 27. leden 2016
The Interim Register of Marine and Nonmarine Genera [1429589]
Rees, T. (compiler): The Interim Register of Marine and Nonmarine Genera [https://www.irmng.org] [jako Echyrosia Cooper, 1989]
Datum citace: 30. listopad 2019