1. Revision of the Cambrian Agnostina (Trilobita?) from Russia

   • E. B. Naimark
   • T. V. Pegel

   OriginalPaper 25 January 2018 Pages: 1167 - 1248

2. Middle Cambrian trilobites from Borehole Nizhny Imbak 219 (northwestern Siberian Platform)

   • T. V. Pegel
   • Yu. Ya. Shabanov
   • I. E. Goryaeva

   OriginalPaper 25 January 2018 Pages: 1249 - 1292