Taxon - Odkazy a literatura
druh
Sphaeragnostus similaris (Barrande, 1872) †
Paleobiology Database [314525]
Paleobiology Database [https://paleobiodb.org/] [jako Sphaeragnostus similaris (Barrande, 1872)]
Datum citace: 13. prosinec 2015
Lemke U. (2019): Catalogue of the available names and non available names of the species and subspecies for the class Trilobita [jako Sphaeragnostus similaris (Barrande 1872)]Datum citace: 28. únor 2020
Vaněk J., Valíček J. (2001): New index of the genera, subgenera and species of Barrandian trilobites. Part A-B (Cambrian and Ordovician) ver. 2013/09, Paleontologia Bohemiae vol. VII, Praha [jako Sphaeragnostus similaris (Barrande, 1872)]
Havlíček V., Vaněk J. (1966): The Biostratigraphy of the Ordovician of Bohemia, Sborník geologických věd, Paleontologie, 8 [jako Sphaeragnostus similaris (Barr.)]