Representatives of the Genus Parrelloides (Foraminifera) from the Upper Cretaceous of West Siberia V. A. Marinov OriginalPaper 17 July 2021 Pages: 235 - 243
Radiolarians of the Class Stauraxonaria from the Late Carboniferous–Middle Permian: Nazarovispongus Kozur sensu Kozur et Mostler, restituo et emend. nov. and a New Genus Kozurispongus gen. nov. M. S. Afanasieva OriginalPaper 17 July 2021 Pages: 244 - 258
Permian Bivalves of the Pronchishchev Ridge (North Siberia): New Data on Taxonomic Composition, Biostratigraphy, and Biogeographic Relationships A. S. BiakovM. K. DanukalovaE. S. Sobolev OriginalPaper 17 July 2021 Pages: 259 - 271
Redescription of Chama clavaticostata Klushnikov (Bivalvia) from the Middle Eocene of Ukraine A. A. Berezovsky OriginalPaper 17 July 2021 Pages: 272 - 276
On the Zonal Index-Species of the Standard Scale of the Ryazanian Stage on the Russian Platform V. V. Mitta OriginalPaper 17 July 2021 Pages: 277 - 287
New and Little Known Blattinopsidae (Insecta: Blattinopsida) from the Middle Permian of Russia D. S. AristovA. P. Rasnitsyn OriginalPaper 17 July 2021 Pages: 288 - 293
Periplaneta (?) perialla sp. nov., a Cockroach Larva of the Subfamily Blattinae (Dictyoptera, Blattidae) from Rovno Amber L. N. AnisyutkinE. E. Perkovsky OriginalPaper 17 July 2021 Pages: 294 - 300
A New Phoebodontid Shark from the Devonian of the Urals and the Distribution of Phoebodus Species A. O. Ivanov OriginalPaper 17 July 2021 Pages: 301 - 310
Age Variability in the Histological Structure of the Postcranial Skeleton of Platyoposaurus stuckenbergi Trautschold, 1884 (Temnospondyli, Archegosauridae) from the Middle Permian of Eastern Europe A. V. UliakhinP. P. SkutschasP. G. Saburov OriginalPaper 17 July 2021 Pages: 311 - 322
A Revision of the Palaeocene–Eocene Mongolian Presbyornithidae (Aves: Anseriformes) N. V. Zelenkov OriginalPaper 17 July 2021 Pages: 323 - 330
Small Vertebrates from the Pleistocene Sediments of the East Chamber of Denisova Cave, Northwestern Altai Mountains A. K. AgadzhanyanM. V. Shun’kovM. B. Kozlikin OriginalPaper 17 July 2021 Pages: 331 - 342
Banded Iron Formations (Jaspilites): The Paleontologist’s View M. M. Astafieva OriginalPaper 17 July 2021 Pages: 343 - 354