Taxon - Links and literature
Lemke U. (2019): Catalogue of the available names and non available names of the species and subspecies for the class Trilobita [as Beggaspis spinicaudatum (Shaw 1968)]Data retrieved on: 27 February 2020
Paleobiology Database [175019]
Paleobiology Database [https://paleobiodb.org/] [as Otarion spinicaudatum Shaw, 1968]
Data retrieved on: 11 December 2015