Check-lists
* List of countries might not be complete
Links and literature
[1] 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 [as Gymnagnostus ariel (Pek et Smola, 1989)]
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 [as Gymnagnostus ariel (Pek et Smola, 1989)]