Revision of the Cambrian Agnostina (Trilobita?) from Russia E. B. NaimarkT. V. Pegel OriginalPaper 25 January 2018 Pages: 1167 - 1248
Middle Cambrian trilobites from Borehole Nizhny Imbak 219 (northwestern Siberian Platform) T. V. PegelYu. Ya. ShabanovI. E. Goryaeva OriginalPaper 25 January 2018 Pages: 1249 - 1292