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 Pseudorhaptagnostus (Machairagnostus) ornatus (Lisogor in Zhuravleva & Rozova 1977)]Data retrieved on: 28 February 2020
E. B. Naimark (2016): Revision of Pseudorhaptagnostus Lermontova (?Trilobita, Agnostida), Paleontological Journal, 50(1), 54-68 [as Machairagnostus ornatus Lisogor, 1977]