Conservative Nature of Biomineral Structures as a Challenge for the Cladistic Method of Phylogeny Reconstruction (Illustrated by Two Groups of Dinosaur Eggs) K. E. Mikhailov OriginalPaper 27 January 2020 Pages: 551 - 565
Trace Fossils from the Vendian-Cambrian Transitional Strata of the Igarka Uplift (Northwestern Siberian Platform) I. V. KorovnikovV. V. MarusinO. T. Obut OriginalPaper 27 January 2020 Pages: 566 - 574
Early Cambrian Tommotiids of Khairkhan Section (Central Tyva) N. V. NovozhilovaM. SteinerD. A. Tokarev OriginalPaper 27 January 2020 Pages: 575 - 582
On the Upper Maastrichtian Oysters of the Genus Rhynchostreon Bayle (Bivalvia, Gryphaeidae) from the Mountainous Crimea I. N. Kosenko OriginalPaper 27 January 2020 Pages: 583 - 592
New Species of the Genus Chelotia (Pleurotomariidae, Gastropoda) from the Middle Eocene of Ukraine A. A. BerezovskyJ.-M. Pacaud OriginalPaper 27 January 2020 Pages: 593 - 597
Craspeditidae (Ammonoidea) of the Russian Platform at the Jurassic–Cretaceous Boundary. II. Genus Hectoroceras Spath V. V. Mitta OriginalPaper 27 January 2020 Pages: 598 - 610
New Spiriferids (Brachiopoda) from the Middle–Late Permian of Northeastern Mongolian Boreal Basin I. N. Manankov OriginalPaper 27 January 2020 Pages: 611 - 615
A New Method for Description of Smooth Ostracod Shells, Using Permian and Triassic Ostracods from Eastern Europe M. A. Naumcheva OriginalPaper 27 January 2020 Pages: 616 - 628
New Conodont Species from the Famennian (Upper Devonian) of the Urals A. N. PlotitsynYu. A. Gatovsky OriginalPaper 27 January 2020 Pages: 629 - 635
The First Record of a Lungfish (Dipnoi, Sarcopterygii) in the Famennian Deposits (Upper Devonian) of the Tver Oblast O. A. LebedevN. I. KrupinaV. V. Linkevich OriginalPaper 27 January 2020 Pages: 636 - 646
Turtles Protestudo bessarabica from the Late Miocene of Ukraine E. V. SyromyatnikovaT. V. KrakhmalnayaI. G. Danilov OriginalPaper 27 January 2020 Pages: 647 - 659
Finds of Ruminants and New Data on the Stratigraphy of the Late Miocene Locality of Fortep’yanka 2 (Northwest Caucasus, Adygea Republic) I. A. VislobokovaK. K. Tarasenko OriginalPaper 27 January 2020 Pages: 660 - 665