1. Revised stratigraphic nomenclature for parts of the Ediacaran-Cambrian Series 2 succession in the southern Great Basin, USA;Ahn S.Y.;Memoirs of the Association of Australasian Palaentologists,2011
2. Morphological assessment of the earliest paradoxidid trilobites (Cambrian Series 3) from Morocco and Spain;Álvaro J.J.;Geological Magazine,2018
3. Astashkin, V.A., Varlamov, A.I., Egorova, L.I. & Shabanov, Yu.Ya. 1981: Stratigraficheskoe polozhenie trilobitov sanashtykgol’skogo kompleksa v stratotipicheskom razreze nizhnego kembriya r. Leny. In Sukhov, S.V. (ed.): Stratigrafiya i paleontologiya Sibiri. Trudy Sibirskogo nauchno-issledovatel’skogo instituta geologii, geofiziki i mineral’nogo syrya (SNIIGGiMS) 287, 5–15.
4. Étude de quelques trilobites de Chine;Bergeron J.;Bulletin de la Société Géologique de France, 3ème série,1899
5. Lower Cambrian trilobites from North Greenland;Blaker M.R.;Meddelelser om Grønland, Geoscience,1997