Abstract An assemblage of platform conodonts from the Anasibirites nevolini Zone has been identified in the Lower Triassic beds of the SMID quarry near the town of Artyom, and a new species Scythogondolella dolosa sp. nov. of the subfamily Scythogondolellinae was described from this assemblage. We initially regarded this species as a putative morphotype of the type species Scythogondolella milleri

Abstract A new mischopterid species Aspidothorax permianus Sinitshenkova and Aristov, sp. nov. (family Aspidothoracidae) is described from the Klyuchiki locality. This is the first insect record from this site and the latest member of the family Aspidothoracidae, the known species of which come from Carboniferous deposits in West Europe. The structure of haustellate mouthparts is described for the

Abstract The youngest Triassic faunistic assemblage of land vertebrates in Russia originates from the upper beds of the Bukobay Formation (Middle Triassic) of the South Cis-Urals in the Lysov locality (Orenburg Region). Bivalve mollusks, a diverse macro-flora, and a rich palynological assemblage were identified at this locality, in addition to tetrapods and fish. The study of the palynological assemblage

Abstract Remains of a fossil cetacean, belonging to the family Basilosauridae, are for the first time found in the territory of the Baltic States. This finding is represented by a large vertebra and comes from the Late Eocene amber-bearing “Blue Ground” bed of the Sambia Peninsula in the Kaliningrad Region. The described fossil expands our knowledge on paleogeography and stratigraphic occurrence of

Abstract— Species of the genus Anmarginulina were widespread in the Arctic basins during the Late Pliensbachian. This group is important for biostratigraphy, global correlation, and paleobiogeography. The comprehensive study of Late Pliensbachian species of the genus Anmarginulina from the sections of the Arctic Siberia has been carried out for the first time.

Abstract The new bryozoan species Filites vulgaris Udodov, F.regularis Mesentseva, F.bakharevi Mesentseva, and F. fragilis Udodov are described from the Akarachkino Quarry in vicinity of Gurievsk (Salair), from a series of alternating argillaceous-carbonate shale and detrital, slightly argillaceous limestones of Emsian age (serotinus zone). In this series there are reticulate colonies of fenestellids

Abstract A new species of the genus Leptoropha (Kotlassiidae, Seymouriamorpha), L. minima sp. nov, is described based on isolated teeth discovered in the Upper Urzhumian beds of the boundary stratotype of the Severodvinian Stage (Republic of Tatarstan, Russia). A sample from the type locality (Monastyrskii Ovrag-D) enabled the tracing of the modification of maxillar and mandibular tooth shape in individuals

Abstract— The rhynchonellid Dogdoa talyndzhensis Baranov, sp. nov. (subfamily Dogdoinae) and the atrypid Vagrania naanchanensis Baranov, sp. nov. (subfamily Vagraninae) are described from the Lower Devonian deposits of Northeast Eurasia. Trails with preserved thin striae and concentric growth lines were found for the first time in the species Vagrania kolymensis (Nalivkin, 1936). The subfamily Punctspinatrypinae

Abstract A new tribe, two new genera and two new species of soft-winged flower beetles (Coleoptera, Malachiidae) are described from Baltic Late Eocene amber. The genus Premalachius gen. nov. with a species Premalachius obscurus sp. nov., belongs to the tribe Malachiini due to the antennae being located near the clypeus, which is well developed, as is the labrum. Within the tribe, the new species is

Abstract This is the first report on the fossilized fibers found in the Archean banded manganese formations of the Chitradurga Greenstone Belt (2.8 Ga, South India), which are similar to the stalk fibers of modern Gallionella ferruginea Ehrenberg, 1838. We have therefore concluded that the intertwined and assembled stalk fibers provide indirect evidence for the presence of bacteria and biogenic mineral

Abstract Some structural features of the suture line of adult representatives of the family Parkinsoniidae are analyzed. It has been established that in the genera Caumontisphinctes, Pseudocosmoceras, Sokurella and most Rarecostites, the ventral lobe (V) is deeper than the first lateral lobe (U). On the contrary, in the microconchs of the later Rarecostites, as well as in the genera Parkinsonia and

Abstract— Based on the study of a representative collection of Berriasian–Barremian oysters from Mangyshlak, their taxonomic composition, stratigraphic and paleobiogeographical distribution are clarified. A new species, Gyrostrea bogdanovae sp. nov., considered to be the most ancient species of the genus Gyrostrea, from the Kugusem Formation (Hauterivian–Barremian), as well as the species Aetostreon

Abstract The diagnosis of the genus Verchojania Abramov, 1970 was revised and clarified. The main differences between the Verchojania and morphologically similar genus Jakutoproductus Kaschirzew, 1959 are substantiated. A new species of Verchojaniaabramovi sp. nov. is described from the Jakutoproductus protoverkhoyanicus Zone of the Kygyltasian Horizon of the Upper Carboniferous of the lower reaches

Abstract Two new species of the family Spilapteridae, Homaloneura brauckmanni sp. nov. and Baeoneura desperata sp. nov. are described from the Lower Permian insect bearing deposits of the Vorkuta Coal Basin. For Vorkutoneura variabilis Sinitshenkova, 1977 (Spilapteridae), the imaginal forewing and nymphal hindwings are described for the first time. The dictyoneuridan assemblage does not agree with

Abstract— For the first time, the almost complete upper dental plate of Myliobatis dixoni from the Thanetian (Upper Paleocene) of Crimea is described.

Abstract New taxa of the order Reculida (Insecta: Gryllones): imagines of Chauliodites babiy sp. nov. (family Chaulioditidae), Stegopterum kabalum sp. nov., S. pashka sp. nov., Permoshurabia tshasha sp. nov., Permuliercula chimaera gen. et sp. nov. (family Geinitziidae), Khosara ultima sp. nov. (family Liomopteridae), and Permotoma aba gen. et sp. nov. (family Skaliciidae) and a nymph of Tarakanikha

Abstract The species Livnolepis heckeri (Lukševičs, 2001) which had been assigned to the genus Bothriolepis at first description, was described from the Famennian sediments (Upper Devonian) of the Tver oblast. New materials collected from a type locality near the village of Bilovo enabled considerable expansion of the morphological description of the species. The plates of the entire head shield and

Abstract A new monotypic genus, Olibrolitus gen. nov. (type species Olibrolituskatyae sp. nov.), is described from Upper Eocene amber. The new genus Olibrolitus does not resemble any extant group of genera of Phalacridae. Several modern genera have been reported and the genus Neolitochropus was recently described from Eocene amber, but the new genus Olibrolitus is not close to Neolitochropus, and it

Abstract A new morphotype of multicuspid teeth belonging to the actinopterygian order Eurynotoidiformes and supposedly associated with Isadia opokiensis A. Minich et Andrushkevich, 2017 was found in the terminal deposits of the East European Severodvinian Stage (Maryushkina Sluda-C locality, Vologda Region). The original description of this species was based upon isolated scales obtained from the stratigraphically

Abstract The skeleton of a berycomorph fish of the Melamphaidae family was found in sediments of the Middle-Upper Miocene of the Kurasi Formation of Sakhalin Island, Russia. Morphological features, such as a short tall body with a large head, the presence of one dorsal fin with a short base, 19 principal caudal rays, a small number of vertebrae, and single-row jaw teeth in combination with very large

Abstract The foraminiferal genus Janischewskina of the family Janischewskinidae Reitlinger, 1996, which is widespread in Eurasia and plays an important role in stratigraphy of the Upper Viséan-Serpukhovian interval of the Lower Carboniferous (=Mississippian), is revised. The morphological characteristics of the genus and species were clarified and supplemented, details of the structure of the interseptal

Abstract We describe lark (Alaudidae) fossils from the upper Pliocene of the Beregovaya (southern Transbaikalia) and Shaamar (northern Mongolia) localities. The presence of 4 extinct forms in these localities is established, including the new fossil horned lark Eremophila orkhonensis (Zelenkov et Kurochkin, 2012), comb. nov. This is the oldest member of Eremophila in the fossil record, indicating a

Abstract Twelve new species of Ordovician ostracodes are described from the sections on the Moyero, Angara and Nizhnyaya Chunku rivers. They belong to six previously described genera (Laccochilina, Kiesowia, Disulcina, Foramenella, Hallatina, and Pseudulrichia) and four new genera (Direigina, Korolyukina, Angarallina, and Tesakovites). The taxonomic assignment of Novoglanditesvarius Melnikova, 2003

Abstract Late Devonian conodonts, recovered from the siliceous and carbonate rocks of the upper part of the Akbasay Formation on the left side of the Kule Gorge, Zeravshan-Gissar mountainous area (Uzbekistan), are studied. Seven conodont associations are defined for the Frasnian–Famennian interval.

Abstract— An ultramicroscopic study of tubiphytes—tubular formations, composed of pelitomorphic calcite from the Lower Permian Tra-Tau reef (Cis-Urals)—was carried out. A multilayer structure of the walls was recognized. The inner layer is an ultrathin layer of acicular calcite crystals, which often has aragonite habit; the next layer is a relatively thick one represented by a dense pelitomorphic mass

Abstract New representatives of the order Eoblattida (Insecta: Blattidea): Mesoblattogryllus palaeozoicus sp. nov., Protoblattogryllus sibiricus sp. nov., Babakhosara mediana gen. sp. nov. (Megakhosaridae family), Baharellinus vasilenkoi sp. nov., B. arctous sp. nov. (Blattogryllidae family) and Babala aba gen. et sp. nov. (Babalidae fam. nov.) were described from the Upper Permian of the Babii Kamen’

Abstract The results of analysis of a bone tissue neoplasm on the mandible of an Early Mesozoic temnospondyl amphibian Benthosuchus korobkovi Ivachnenko from the Tikhvinskoe locality (upper reaches of the Volga River, Yaroslavl oblast (Region); Lower Triassic, Lower Olenekian substage) are presented. The use of multispiral computed tomography enabled a rather well justified conclusion of the neoplastic

Abstract The earliest finds of probable eukaryotes in the oldest sediments of various regions are reviewed. It is possible that the first eukaryotes could have appeared as early as the Archean.

Abstract The high variability of ammonites is largely due to the diversity of combinations of individual heterochronies (bradimorphy, tachymorphy, bradygeronty, and tachygeronty) and the modularity of development. Using the genus Arcticoceras as an example, it was shown that heterochronies of various directions can be combined in any number of characters, and individual heterochronies differ from phylogenetic

Abstract The northernmost representative of the genus Gregoryceras, G. boreale Mitta et Stupachenko, sp. nov., is described based on a holotype from the Mikhalenino section on the Unzha River (Kostroma Region). The new species comes from the lower part of the Tenuiserratum Zone (Zenaidae subzone), comparable to the tops of the Plicatilis Zone (Arkelli Subzone) of the Middle Oxfordian sub-Mediterranean

Abstract Two new taxa of the genus Archiphilopotamus Sukatsheva, 1985: A. kubekovensis sp. nov. and A. absurdus sp. nov. are described, and the two taxa A. luxus Sukatsheva, 1985 and A. mancus Sukatsheva, 1985 are redescribed from the Middle Jurassic of the Krasnoyarsk krai (Kubekovo locality, Russia). A new species of the genus Juraphilopotamus (J. funeralis sp. nov.) is described. This genus was

Abstract A new genus and species of scombrid fish Caucombrus histiopterygius gen. et sp. nov. is described from the Lower Oligocene (Lower Maikopian, Pshekha regional state) of the north-western Caucasus (Russia) and Abkhazia (rivers Belaya, Pshekha and Gumista). The new taxon differs from the other known Scombridae, both fossil and Recent, by the high and sail-like first dorsal fin. Osteological characters