Vol. 55, No. 5, 2021
Pseudocolonies of Silurian Rugoses Microplasma schmidti Dybowski from Estonia: Morphology and Origin
p. 469 abstract
Microstructure of the Tubes of Cambrian Zooproblematics of the Family Hyolithellidae
p. 477 abstract
New Findings of Early Triassic Representatives of the Suborders Ussuritina and Paraceltitina (Ammonoidea) from South Primorye
p. 489 abstract
On the System and Phylogeny of the Beyrichitidae (Ammonoidea, Middle Triassic)
p. 497 abstract
Ammonites of the Ryazanian Stage of the Russian Platform: Genus Pronjaites Sasonova
p. 511 abstract
A New Genus Kislovodskoceras (Desmoceratidae, Ammonoidea) from the Middle Aptian of the Vicinity of Kislovodsk (Northern Caucasus)
p. 520 abstract
Bimineral Skeleton of Acoscinopleura crassa (Bryozoa, Cheilostomata) from the Maastrichtian of Germany Revealed Using X-ray Microtomography
p. 529 abstract
Some Ostracods of the Syadai Formation (Silurian) in the Polar Urals
p. 538 abstract
Caddisflies (Insecta, Trichoptera) from the Upper Mesozoic Chernovskie Kopi Locality (Transbaikalia): Part 2. Larval Cases
p. 545 abstract
The Oldest Representative of the Superfamily Hagloidea (Orthoptera) from the Upper Permian of Russia, with Remarks on Katydid-Like Forms from the Paleozoic
p. 552 abstract
Paleobiogeographical Analysis of Assemblages of Cenomanian Elasmobranchs (Chondrichthyes, Elasmobranchii)
p. 559 abstract
Miocene Ochotonids of the Genus Bellatona (Lagomorpha, Mammalia) from Mongolia
p. 571 abstract
Fossil Organisms of the Redkino Regional Stage of the Upper Vendian of the Northwestern Russian Platform (Leningrad Region)
p. 579 abstract