AbstractElliptoglossa Cooper, 1956 is reported for the first time from the Frasnian, Upper Devonian of the Volga–Ural region. A new species E. kononovae sp. nov. is described. The microstructure of the inner surfaces of the ventral and dorsal valves and outer surface of the dorsal valve are described in detail. The shell microstructure is studied for the protegular and adult shell regions. The protegulum

AbstractThe first endophytic oviposition from the Upper Permian of the Pechora Basin (Talbeyskaya Formation, Severodvinian–Vyatkian) is described in a formal system. Paleoovoidus krassilovi sp. nov. is a linear oviposition arranged in two oppositely directed rows on a leaf of Phylladoderma arberi Zalessky, 1913; it was probably produced by an odonatan insect. Cuticle punctures that probably represent

Abstract—The lizard Epileolis reshetovi gen. et sp. nov., Agamidae is described from the late Paleocene of South Mongolia. The new form is established based on a find of the left dentary with teeth. The new taxon is distinguished by the narrow-based prenatal teeth, seven canine-like teeth and the high coronoid process of the dentary.

AbstractA second species of the genus Protaneuretus Wheeler, 1915, P. mirabilis sp. nov., is described from the late Eocene Bitterfeld amber. The new species is compared with the type species of the genus and key to species of Protaneuretus is provided.

AbstractA new species, Anthonomus aphelomerus Legalov and Poinar, sp. nov. from Early Miocene Dominican amber is described. The new species differs from Anthonomus browni Poinar and Legalov, 2015 in the smaller body size, thinner, weakly curved rostrum and weakly clavate femora; it is differs from Anthonomus clarki Legalov, 2019 in the longer rostrum and slightly convex body; it also differs from Anthonomus

AbstractTodies (Aves: Todidae)—endemic to the Greater Antilles and one of the most characteristic components of the modern fauna of Cuba—have not yet been represented in the island’s fossil record. This article describes the first fossil find of a representative of this family in Cuba. A coracoid from the Upper Pleistocene of the cave El Abrón (Pinar-del-Río province) in general morphology and size

AbstractA new gastropod genus Alanstukella gen. nov., from the family Trochonematidae is described. The type species A. rossica (Stuckenberg, 1905), belongs to a small group of the largest Late Paleozoic representatives of the class Gastropoda. A. rossica has been shown to have pedomorphic features. Despite the extreme rarity of finds, the species has a wide geographical and stratigraphic distribution:

AbstractA new benthosuchid Benthosuchus lukyanovi sp. nov. is described from the Early Triassic deposits of the Bludnovo locality in the Vologda Oblast (Yug River Basin). The new species has the largest skull among the known Benthosuchus specimens. Morphological differences between B. lukaynovi and the other representatives of the genus mostly concern the trematosauroid features: the position of the

Abstract—New representatives of the family Vitimotauliidae (Multimodus amplus sp. nov., Purbimodus parvulus sp. nov., Burimodus novus gen. et sp. nov.) and a new species of the family Philopotamidae (Juraphilopotamus callidus sp. nov.) from the Lower Cretaceous of Russia (Republic of Buryatia, Khasurty locality) are described. Keys to of genera of the family Vitimotauliidae and species of genera of

AbstractThe environments of the Upper Vendian microscopic and macroscopic fossil organisms of the northwestern Russian Platform were reconstructed, and vertical distribution was analyzed. Five assemblages of the Kotlin age were determined: one impoverished transit assemblage and four abundant ones. A monographic restudy of the following filamentous algae was carried out: Aataenia reticularis Gnilovskaya

Abstract—A distinct change in the taxonomic and ecological structure of assemblages of brachiopods of the order Spiriferida is observed at the Devonian and Carboniferous boundary of Transcaucasia. Representatives of the superfamily Cyrtospiriferoidea dominated in the assemblages in the Late Devonian, and became extinct by the end of the Devonian, while the Early Carboniferous is dominated by the superfamily

AbstractSome ammonites of the subfamily Garantianinae are revised based on the study of new collections from the lower part of the upper Subformation of the Djangura Formation (Upper Bajocian Strenoceras niortense Chronozone, Middle Jurassic) near the village of Krasnogorskaya on the Kuban River (Russia, Karachay-Cherkessia). The dimorph pair Strenoceras acre [m]/Orthogarantiana humilis [M], taxa,

AbstractSiberian representatives of the family Ilyocyprididae are revised based on Neogene–Quaternary ostracod collections assembled by T.A. Kazmina, I.I. Tetetrina, and the author of this article. Ilyocyprididae is represented in the region by two genera, Ilyocypris Brady et Norman, 1889 and Fossilyocypris Schornikov et Krstić, 2004. Species composition and stratigraphic position of 12 taxa of this

AbstractFive bivalve species (Arcomytilus sanctaecrucis, Neithea valangiensis, Plagiostoma dubisiensis, Prohinnites renevieri, and Protocardia broili sp. nov.) are described from a new locality in Southwestern Crimea. These species, along with the gastropod Phaneroptyxis broili and the foraminifer Bramkampella arabica, indicate the Early Berriasian age of the carbonate deposits examined. The transition

AbstractDispersed fossil pollen grains of Fagaceae from the Eocene sediments of the south of Primorskii Region have been analyzed using a scanning electron microscope. Fourteen types of Fagaceae pollen were identified: one of them represented the extinct genus Eotrigonobalanus, four were assigned to the subfamily Castaneoideae, two to the genus Fagus, and seven to the genus Quercus; four of the latter

AbstractSalwaichthys paratethyensis gen. et sp. nov., representative of a new monotypic family of perciform fishes Salwaichthyidae, is described based on three specimens from the lower Oligocene of the Caucasus (Abkhazia and SW Russia, Adygea) and Polish Carpathians. The new family is characterized by: elongated body with relatively small head and long caudal peduncle, large mouth, divided dorsal fins

AbstractAn 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 (Müller

AbstractA 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 first

AbstractThe 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

AbstractRemains 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.

AbstractThe 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

AbstractA 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

AbstractA 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

AbstractThis 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

AbstractSome 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

AbstractThe 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

AbstractTwo 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 the

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

AbstractNew 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

AbstractThe 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

AbstractA 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

AbstractA 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

AbstractThe 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

AbstractThe 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

AbstractWe 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

AbstractTwelve 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

AbstractLate 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

AbstractThe coprolite containing conchostracans from the terminal Permian Bykovka locality of Vyaznikovian tetrapod faunistic assemblage (the east of the Vladimir Region, Russia) are described for the first time. The most likely producers of such coprolites might be seymouriamorphs belonging to the genus Microphon, currently discovered in this locality. The composition of the conchostracan assemblage

AbstractThe ostracod assemblages of the Baksian and Dolborian horizons of the Chunya River basin (a right tributary of the Podkamennaya Tunguska River) have been studied. They add essentially the paleontological characteristics of Upper Ordovician deposits of the Siberian Platform. The age of deposits was verified and the studied sections were correlated with the Gaindinskaya 3 reference borehole.

AbstractNew previously unstudied geese bones (two coracoids and tarsometatarsus) are described from the late Miocene locality Hyargas Nuur 2 in Western Mongolia. A tarsometatarsus, previously unknown for Anser devjatkini Kurochkin, 1971, indicates close phylogenetic relationships of this extinct species with modern grey geese. Previously noted similarity with white geese is treated as plesiomorphic

AbstractThe article describes fossil remains of two spiral-horned antelope species Gazellospira torticornis (Aymard, 1854) and Pontoceros ambiguus Vereschagin, Alexejeva, David et Baigusheva, 1971 which were found in 2018 in the Lower Pleistocene sediments of the Taurida Cave in Central Crimea. These finds are the first evidence of the occurrence of these taxa on the Crimean Peninsula. This association

AbstractNew 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’

AbstractThe 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

AbstractThe 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.

AbstractThe 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

AbstractThe 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

AbstractTwo 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 previously

AbstractA 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

AbstractEvolutionary developmental biology (evo-devo) formed due to the interactions of evolutionary biology, paleontology, and comparative genomics, analyzes the interrelations of ontogenetic and phylogenetic processes and, primarily, the influence of changes in individual development are under genetic control, and Hox genes play a decisive role in the determination of animal’s body plan. Both genetic

AbstractOn the basis of new extensive collections, made by the present authors, a group of unsegmented three-dimensional fossil remains from the Late Precambrian of Namibia and the southeastern White Sea area, including such genera as Protechiurus, Vendoglossa, and Vendoconularia, were restudied. It is established that the fossils belong to two morphologically close genera (Protechiurus and Vendoconularia)

AbstractThe Oxfordian–Kimmeridgian Cerithiopsidae, represented by two genera Cosmocerithium Cossmann, 1906 and Dragonia gen. nov. are re-investigated. Three species (C. renardi (Rouillier, 1849), C. pumilum (Gerasimov, 1992), and C. veliger sp. nov.), representing the same phylogenetic line, are distinguished in the genus Cosmocerithium. These species formed during the gradual morphological evolution

Abstract—Small gastropods from the Jurassic deposits of the European Russia, united into the lower Heterobranchia or Allogastropoda, are described. The families of Ampezzanildidae, Cimidae, Cornirostridae, Ebalidae, and Stuoraxidae are distinguished, and a set of taxa is given without reference to a definite family. The family Ampezzanildidae from the Jurassic deposits is described for the first time

AbstractThis paper presents the results of the study of the Upper Bajocian Garantiana garantiana Zone (Middle Jurassic) and characteristic ammonites in sections of the basin of the Kuban River (Karachay-Cherkessia). The assemblage contains species of the genera Garantiana, Pseudogarantiana, Paragarantiana, Djanaliparkinsonia (all family Stephanoceratidae) and Vermisphinctes (family Perisphinctidae)

AbstractThe ship-timber beetle Cretoquadratus engeli gen. et sp.n. has been described and classified based on a moderately well-preserved fossil specimen found inside mid-Cretaceous amber from the Hukawng Valley in northern Myanmar. The newly created taxon is placed within Atractocerinae, and the new species can be easily distinguished from all other extinct and recent members of the subfamily due

AbstractThe xylotomy of the silicified wood from the Late Jurassic to Early Cretaceous Kota Formation of the Pranhita-Godavari Basin is studied and its systematic affinity is identified here. The wood is characterised by distinct growth rings with mixed pitting on radial tracheid walls, and taxodioid cross-field pits. The combination of the features observed in the present wood indicates that, it belongs

AbstractThe Ordos Basin is one of the largest continental sedimentary basins and it represents one major and famous production area of coal, oil and gas resources in China. The Jurassic non-marine deposits are well developed and cropped out in the basin. The Middle Jurassic Yan’an Formation is rich in coal and contains diverse plant remains. We recognize 40 species in 25 genera belonging to mosses