Ашық рұқсат Ашық рұқсат  Рұқсат жабық Рұқсат берілді  Рұқсат жабық Тек жазылушылар үшін

№ 4 (2024)

Мұқаба

Бүкіл шығарылым

Ашық рұқсат Ашық рұқсат
Рұқсат жабық Рұқсат берілді
Рұқсат жабық Тек жазылушылар үшін

New Data on the Upper Ediacaran Microbiota of Zuun-Arts (Zavkhan Terrane, Western Mongolia)

Petrov P., Vorob’eva N., Ragozina A.

Аннотация

The microfossils and problematica from the Upper Ediacaran deposits of the Zuun-Arts Formation of the Zavkhan terrane of Western Mongolia are considered. For the first time, various organic remains preserved in mineralized and organic-clay taphocenoses have been described from these deposits. Numerous tubular microfossils are interpreted as remains of the sheaths of the giant sulfide-oxidizing Thioploca bacteria Candidatus Marithioploca araucae. Autochthonous and allochthonous components of microbiota were identified, and the putative facies-ecological structure of the paleobasin was analyzed.

Paleontologičeskij žurnal. 2024;(4):3-18
pages 3-18 views

Cambrian Microfossils of the Genus Corollasphaeridium: New Interpretation and Revision of Systematics

Dantes O., Nagovitsin K., Raevskaya E.

Аннотация

Bell-shaped microfossils found in Lower Cambrian Tommotian of the Siberian Platform were compared with morphologically similar forms of the Lower Cambrian of Australia, assigned to the acritarch genus Corollasphaeridium (Martin in Dean et Martin, 1982) Martin, 1992 (Gravestock et al., 2001). Revision of the genus using geometric-morphometric method allowed us to justify the separation of Siberian and Australian forms into a separate genus Spicaticampaniformis gen. nov. with two species in its composition. A description of the new genus is given and supplemented descriptions of species of S. aliquolumus and S. opimolumus. According to the revealed characteristics of their structure, excluding the form of a whole closed body, inherent to acritarchs, and also taking into account the variability of features comparable with model organisms (priapulids, acanthocephalans, chitinozoa), the assignment of the genera Corollasphaeridium and Spicaticaticampaniformis to the Metazoa group is proposed. General regularities in the variation of species of Spicaticampaniformis opimolumus and Acanthocephala, which may indicate similar ecomorphotypes, as well as Corollasphaeridium wilcoxianum and Priapulida, which may also be ecomorphotypes, are described.

Paleontologičeskij žurnal. 2024;(4):19-33
pages 19-33 views

New Radiolarian Species of the Genus Foremanina Empson-Morin from the Maastrichtian Deposits of Lefkara Formation, Cyprus

Bragina L.

Аннотация

Numerous representatives of the genus Foremanina Empson-Morin, 1981, emend. nov. were studied from the Upper Cretaceous (Maastrichtian) deposits of the Lefkara Formation (Cyprus). Diagnosis of the genus Foremanina is emended. New species F. macropora sp. nov., F. coronata sp. nov. и F. ornata sp. nov. are described. Species F. macropora sp. nov. is for the first time recorded in the Campanian of Sakhalin. Thus, the paleogeographic occurrence of genus Foremanina is expanded and covers Tehyan Realm and Hokkaido-Sakhalin paleobasin. The latest representatives of Foremanina were for the first time found in the upper Maastrichtian of Cyprus. The stratigraphic ranges of genus Foremanina are expanded.

Paleontologičeskij žurnal. 2024;(4):34-42
pages 34-42 views

New species of the Genus Ochmazochiton (Mollusca, Polyplacophora) from the Lower Permian Reef Limestones of Shakhtau (Southern Cisuralia)

Mazaev А.

Аннотация

Eleven imprints of chiton valves from the Sakmara stage of the Shakhtau reef massif (Bashkir Cis-Urals) are assigned to a new species – Ochmazochiton uralensis sp. nov. Previously, the genus Ochmazochiton was known only from the type species described from the Lower and Middle Permian of Texas. Due to the unique preservation of the studied material, the structure of the pores of aesthetes is shown for the first time, and the structure of the insertion plates, the important morphological characters of the genus Ochmazochiton, the oldest representative of the oder Chitonida, is clarified.

Paleontologičeskij žurnal. 2024;(4):43-52
pages 43-52 views

Early Phylogeny of the Permian superfamily Popanoceratoidea Hyatt (Ammonoidea)

Leonova T.

Аннотация

This paper discusses the origin of the superfamily Popanoceratoidea Hyatt, and substantiates the hypothesis that the suborder Cyclolobina (order Goniatitida) evolved from the family Glaphyritidae Ruzhencev et Bogoslovskaya. The genus Tabantalites Ruzhencev is proposed as an intermediate form between Vidrioceratidae Plummer et Scott and Popanoceratidae Hyatt. The early phylogeny of popanoceratids in the Early Permian is considered in detail (Protopopanoceras → Propopanoceras → Popanoceras, Pamiropopanoceras). Information on the biogeography of Popanoceratoidea is provided.

Paleontologičeskij žurnal. 2024;(4):53-64
pages 53-64 views

An Exceptionally Large Lower Jaw of Lytoceratoidea from the Upper Bajocian (Middle Jurassic) of Northern Caucasus

Mitta V., Mironenko A.

Аннотация

A large-sized upper jaw of an ammonite from the Niortense Zone of the Upper Bajocian of the Kuban basin (Karachay-Cherkessia) is described. In its anterior part it has a pointed calcified structure (rhyncholite). Judging by its shape and size, the upper jaw belonged to a species of the genus Lytoceras (family Lytoceratidae), the lower jaw of which was already described from the same area immediately below in the section. The presence of a rhyncholite allows us to attribute the new finding to the rhynchaptychus type of ammonoid jaw apparatus. This is the earliest known complete jaw of this type and, to date, the only known upper jaw of Lytoceratina. Probably, calcification of the anterior part of the jaw apparatus of ammonoids of the suborders Lytoceratina and Phylloceratina was a normal process occurring as the mollusk matured.

Paleontologičeskij žurnal. 2024;(4):65-73
pages 65-73 views

New Data on the Morphology and Distribution of Kotlassia prima Amal. (Tetrapoda, Seymouriamorpha)

Bulanov V.

Аннотация

The sample of individual bones coming from five East European localities provides new data on the morphology and stratigraphic range of kotlassiid Kotlassia prima Amal. (Seymouriamorpha). New finds allow to suppose the complete reduction of the seismosensory system in K. prima at the late ontogenetic stages that indicates more terrestrial ecology of the above species at adult state in comparison with other upper Permian kotlassiids (Microphon spp.), for which the paedomorphic features of cranial and postcranial anatomy are common. The homodont dentition and monocuspid shape of teeth of K. prima allow identification this form as a carnivore, the diet of which was predominated by conditions of inhabited biotopes and included vast kinds of trophic objects such as invertebrates and small-sized vertebrates. New finds prove the wide spread of K. prima in tetrapod communities of the north-east of Eastern Europe, and prolong the stratigraphic distribution the species up to the terminal-most Permian beds (Zhukovian Regional Stage), exhibiting the taxonomic diversity and important role of kotlassiids within the vertebrate associations in time preceding the Permo-Triassic crisis event.

Paleontologičeskij žurnal. 2024;(4):74-87
pages 74-87 views

The First Representative of the Ichthyosaur Genus Platypterygius from the Albian of Western Kazakhstan

Yakupova J., Akhmedenov K.

Аннотация

An ichthyosaur of the genus Platypterygius is described from the Upper Albian deposits of the Mangystau region of Western Kazakhstan. The material is unique in the degree of preservation of the vertebral column of 38 vertebrae, the atlas-axis complex, the frontal part of the skull, fragments of jaw bones, quadrate, teeth, fragments of neural arches and ribs. A number of features, such as a notch on the occipital surface, the articular condyle of the quadrate, the square root of the teeth in cross-section, allows its attribution to the genus Platypterygius.

Paleontologičeskij žurnal. 2024;(4):88-100
pages 88-100 views

Mosasaurs (Squamata: Mosasauridae) from the Upper Cretaceous of the Southern Urals

Grigoriev D., Zverkov N., Nikiforov A.

Аннотация

The study of new finds of mosasaurids from the Izhberda locality (Southern Urals, Orenburg Region) allowed to identify for the first time for the Upper Cretaceous of the Orenburg Region the presence of mosasaurs from the subfamilies Mosasaurinae, Tylosaurinae and Plioplatecarpinae, including representatives of the genera Mosasaurus, Prognathodon and Clidastes known from the Upper Cretaceous of North America and Western Europe. Of interest is the discovery of the tylosaurine Taniwhasaurus, previously known from New Zealand, Antarctica, South Africa and Japan. Thus, the Campanian mosasaurid fauna of the Southern Urals is intermediate, including North American–European and Asia–Pacific taxa. However, all finds of mosasaurs from the Izhberda locality can be identified only in open nomenclature, making detailed comparisons of faunas difficult. Revision of material to the article of N.N. Bogolyubov (1910), who first described the remains of mosasaurs from the Southern Urals collected by P.S. Nazarov, allowed us to conclude that the type series of the mosasaur Liodon rhipaeus Bogolubov, 1910, in addition to three mosasaurian vertebrae, includes the ischium and the posterior fragment of the mandible of a plesiosaur. Liodon rhipaeus is clearly a nomen dubium and the vertebrae of its type series cannot be identified more precisely than Tylosaurinae indet.

Paleontologičeskij žurnal. 2024;(4):101-120
pages 101-120 views

A Vulture of the Genus Torgos (Aves: Accipitridae) in the Late Pleistocene of Azerbaijan

Gorbatcheva V., Zelenkov N.

Аннотация

Old World vultures (Gypini) are large diurnal birds of prey, the characteristic inhabitants of open biotopes in Africa and southern Eurasia. Fossil remains of vultures are quite rare; the evolution of the group is poorly studied. This article describes the skull and tarsometatarsus of the large vulture Torgos platycephalus sp. nov. from the Upper Pleistocene of the Binagadi locality (Azerbaijan). This is the first fossil record of the genus in the Caucasus and the second confirmed one outside its modern range (Torgos sp. is also known from the Middle Pleistocene of China). The coexistence of three species of large scavengers in the Late Pleistocene of the Absheron Peninsula (in addition to Torgos platycephalus, Aegypius monachus and Gyps fulvus are also known from the Binagadi locality) can be explained by the richness of the food supply, which included a noticeable diversity of large mammals.

Paleontologičeskij žurnal. 2024;(4):121-129
pages 121-129 views

Eucladoceros orientalis (Artiodactyla, Cervidae) from the Lower Pleistocene of Taurida Cave in the Crimea and the Systematic Position of the Species

Vislobokova I.

Аннотация

The presence of the large comb-antlered deer Eucladoceros orientalis (Radulesco et Samson, 1967) has been discovered in the Early Pleistocene fauna (1.8–1.5 Ma) of the Tavrida Cave in the Crimea. The proximal parts of two antlers, two incomplete upper jaws, lower jaw, dentition, and metatarsal bone are described. New data on the morphology of this species confirm its assignment to the genus Eucladoceros. E. orientalis, an autochthonous species of the Early Pleistocene fauna of the Northern Black Sea region, is characteristic of the Psekupsian faunal complex of southern Eastern Europe.

Paleontologičeskij žurnal. 2024;(4):130-142
pages 130-142 views