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) tmetus (Harrington & Leanza 1957)]Data retrieved on: 3 March 2020
Paleobiology Database [198453]
Paleobiology Database [https://paleobiodb.org/] [as Machairagnostus tmetus Harrington & Leanza, 1957]
Data retrieved on: 28 February 2020
E. B. Naimark (2016): Revision of Pseudorhaptagnostus Lermontova (?Trilobita, Agnostida), Paleontological Journal, 50(1), 54-68 [as Machairagnostus tmetus Harrington et Leanza, 1957]