Taxon - Links and literature
Paleobiology Database [19037]
Paleobiology Database [https://paleobiodb.org/] [as Helmetia]
Data retrieved on: 30 January 2016
The Interim Register of Marine and Nonmarine Genera [1384098]
Rees, T. (compiler): The Interim Register of Marine and Nonmarine Genera [https://www.irmng.org] [as Helmetia Walcott, 1918]
Data retrieved on: 30 November 2019
Chlupáč I., Kordule V. (2002): Arthropods of Burgess Shale type from the Middle Cambrian of Bohemia (Czech Republic), Bulletin of the Czech Geological Survey, Vol. 77, No. 3, 167–182 [as Helmetia Walcott, 1918]