1. Trilobites of the Beekmantown in the Phillipsburg region of Quebec;Bradley;Canadian Field Naturalist,1925
2. New Silurian Heterostraci from southeastern Yukon;Denison;Fieldiana: Geology,1963
3. Cambrian and Early Ordovician trilobites from northeastern Hebei and western Liaoning;Guo;Acta Palaeontologica Sinica,1978
4. Classification des trilobites;Hupé;Annales de Paléontologie,1955
5. Available generic names for trilobites;Jell;Memoirs of the Queensland Museum,2003