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 Ivshinagnostus quadratus Choi, Li & Sheen 2004]Data retrieved on: 3 March 2020
Paleobiology Database [247842]
Paleobiology Database [https://paleobiodb.org/] [as Ivshinagnostus quadratus Choi, Lee & Sheen, 2004]
Data retrieved on: 29 February 2020