Pub Date : 2024-08-03DOI: 10.1134/s0031030124600392
L. G. Bragina
Abstract
Numerous representatives of the genus Foremanina Empson-Morin, 1981, emend. nov. were studied from the Upper Cretaceous (Maastrichtian) of the Lefkara Formation (Cyprus). The diagnosis of the genus Foremanina is emended. The new species F. macropora sp. nov., F. coronata sp. nov. and F. ornata sp. nov. are described. F. macropora sp. nov. is recorded for the first time in the Campanian of Sakhalin. The paleogeographic distribution of genus Foremanina is expanded to include the Tethyan Realm and Pacific Realm including the Mid-Pacific Mountains and Hokkaido–Sakhalin paleobasin. The latest representatives of Foremanina were found for the first time in the upper Maastrichtian of Cyprus. The stratigraphic range of the genus Foremanina is expanded.
AbstractNerous representatives of the genus Foremanina Empson-Morin, 1981, emend.修订了 Foremanina 属的诊断。描述了新种 F. macropora sp.F. macropora sp.新发现的F. macropora sp.在塞浦路斯的上马斯特里赫特期首次发现了 Foremanina 的最新代表。Foremanina 属的地层范围有所扩大。
{"title":"New Radiolarian Species of the Genus Foremanina Empson-Morin from the Maastrichtian of the Lefkara Formation, Cyprus","authors":"L. G. Bragina","doi":"10.1134/s0031030124600392","DOIUrl":"https://doi.org/10.1134/s0031030124600392","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Numerous representatives of the genus <i>Foremanina</i> Empson-Morin, 1981, emend. nov. were studied from the Upper Cretaceous (Maastrichtian) of the Lefkara Formation (Cyprus). The diagnosis of the genus <i>Foremanina</i> is emended. The new species <i>F. macropora</i> sp. nov., <i>F. coronata</i> sp. nov. and <i>F. ornata</i> sp. nov. are described. <i>F. macropora</i> sp. nov. is recorded for the first time in the Campanian of Sakhalin. The paleogeographic distribution of genus <i>Foremanina</i> is expanded to include the Tethyan Realm and Pacific Realm including the Mid-Pacific Mountains and Hokkaido–Sakhalin paleobasin. The latest representatives of <i>Foremanina</i> were found for the first time in the upper Maastrichtian of Cyprus. The stratigraphic range of the genus <i>Foremanina</i> is expanded.</p>","PeriodicalId":19816,"journal":{"name":"Paleontological Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141939762","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-03DOI: 10.1134/s0031030124600379
I. A. Vislobokova
Abstract
The large comb-antlered deer Eucladoceros orientalis (Radulesco et Samson, 1967) is recorded in the Early Pleistocene fauna (1.8–1.5 Ma) of Taurida Cave, Crimea. The proximal parts of two antlers, two incomplete upper jaws, a lower jaw, dentition, and a 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.
摘要 在克里米亚陶里达洞穴的早更新世动物群（1.8-1.5 Ma）中发现了大型梳齿鹿 Eucladoceros orientalis（Radulesco et Samson，1967 年）。描述了两只鹿角的近端部分、两个不完整的上颚、一个下颚、牙齿和一个跖骨。关于该物种形态学的新数据证实了它属于Eucladoceros属。E.orientalis是北黑海地区早更新世动物群中的一个自生物种，具有东欧南部Psekupsian动物群复合体的特征。
{"title":"Eucladoceros orientalis (Artiodactyla, Cervidae) from the Lower Pleistocene of the Taurida Cave, Crimea, and Its Systematic Position","authors":"I. A. Vislobokova","doi":"10.1134/s0031030124600379","DOIUrl":"https://doi.org/10.1134/s0031030124600379","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The large comb-antlered deer <i>Eucladoceros orientalis</i> (Radulesco et Samson, 1967) is recorded in the Early Pleistocene fauna (1.8–1.5 Ma) of Taurida Cave, Crimea. The proximal parts of two antlers, two incomplete upper jaws, a lower jaw, dentition, and a metatarsal bone are described. New data on the morphology of this species confirm its assignment to the genus <i>Eucladocero</i>s. <i>E. orientalis</i>, 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.</p>","PeriodicalId":19816,"journal":{"name":"Paleontological Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141939768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-03DOI: 10.1134/s0031030124600343
O. V. Dantes, K. E. Nagovitsin, E. G. Raevskaya
Abstract
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 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.
{"title":"Cambrian Microfossils of the Genus Corollasphaeridium: New Interpretation and Revision of Systematics","authors":"O. V. Dantes, K. E. Nagovitsin, E. G. Raevskaya","doi":"10.1134/s0031030124600343","DOIUrl":"https://doi.org/10.1134/s0031030124600343","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>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 <i>Corollasphaeridium</i> (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 <i>Spicaticampaniformis</i> gen. nov. with two species in its composition. A description of the new genus is given and supplemented descriptions of species of <i>S. aliquolumus</i> and <i>S. opimolumus</i>. According to the revealed characteristics of their structure, excluding the form of a whole closed body, inherent to acritarchs, and taking into account the variability of features comparable with model organisms (priapulids, acanthocephalans, chitinozoa), the assignment of the genera <i>Corollasphaeridium</i> and <i>Spicaticaticampaniformis</i> to the Metazoa group is proposed. General regularities in the variation of species of <i>Spicaticampaniformis opimolumus</i> and Acanthocephala, which may indicate similar ecomorphotypes, as well as <i>Corollasphaeridium wilcoxianum</i> and Priapulida, which may also be ecomorphotypes, are described.</p>","PeriodicalId":19816,"journal":{"name":"Paleontological Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141939761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-03DOI: 10.1134/s0031030124600331
T. B. Leonova
Abstract
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). Biogeography of Popanoceratoidea is discussed.
{"title":"Early Phylogeny of the Permian Superfamily Popanoceratoidea Hyatt (Ammonoidea)","authors":"T. B. Leonova","doi":"10.1134/s0031030124600331","DOIUrl":"https://doi.org/10.1134/s0031030124600331","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>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 <i>Tabantalites</i> 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 (<i>Protopopanoceras</i> → <i>Propopanoceras</i> → <i>Popanoceras, Pamiropopanoceras</i>). Biogeography of Popanoceratoidea is discussed.</p>","PeriodicalId":19816,"journal":{"name":"Paleontological Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141939763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-03DOI: 10.1134/s0031030124600380
V. V. Bulanov
Abstract
New data on the morphology and distribution of the kotlassiid Kotlassia prima Amalitzky (Seymouriamorpha) are provided based on fragmentary remains from five upper Permian localities in Eastern Europe. The new finds suggest the absence of a seismosensory system at the final stages of ontogeny in K. prima that may indicate a more terrestrial ecology for this species in the adult state in comparison with other late Permian representatives of the family (Microphon spp.), for which the paedomorphic features in the cranial and postcranial anatomy are common. The homodont dentition and the simple shape of the teeth allow interpretation of K. prima as a predator with a wide trophic niche, the prey of which was determined by resources of the specific biotopes and might include both invertebrates and relatively small vertebrates. The new finds show that K. prima was typical for tetrapod associations of the northeast of the East European Platform, extend the stratigraphic range of the genus Kotlassia up to the terminal Permian (Zhukovian), and indicate that the family Kotlassiidae maintained its taxonomic diversity until the Permo–Triassic cenotic crisis, continuing to play a significant role in vertebrate communities in the time preceding it.
摘要 根据东欧五个二叠纪上层地点的零散遗骸，提供了关于蝶形目 Kotlassia prima Amalitzky（Seymouriamorpha）的形态和分布的新数据。新的发现表明，K. prima 在本体发育的最后阶段没有地震感觉系统，这可能表明该物种成年后的生态环境与该科（Microphon 属）的其他二叠纪晚期代表物种相比更加陆地化，该科的颅骨和颅骨后解剖学中的拟态特征很常见。K.骁龙的同齿和牙齿的简单形状使其可以被解释为一种具有广泛营养生态位的食肉动物，其猎物由特定生物群落的资源决定，可能包括无脊椎动物和相对较小的脊椎动物。新的发现表明 K. prima 是东欧地台东北部典型的四足动物群落，将 Kotlassia 属的地层范围扩展到了二叠纪末（朱可夫期），并表明 Kotlassiidae 科在二叠三叠纪岑岭危机之前一直保持着分类多样性，在危机之前的脊椎动物群落中继续发挥着重要作用。
{"title":"New Data on the Morphology and Distribution of Kotlassia prima Amalitzky (Tetrapoda, Seymouriamorpha)","authors":"V. V. Bulanov","doi":"10.1134/s0031030124600380","DOIUrl":"https://doi.org/10.1134/s0031030124600380","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>New data on the morphology and distribution of the kotlassiid <i>Kotlassia prima</i> Amalitzky (Seymouriamorpha) are provided based on fragmentary remains from five upper Permian localities in Eastern Europe. The new finds suggest the absence of a seismosensory system at the final stages of ontogeny in <i>K. prima</i> that may indicate a more terrestrial ecology for this species in the adult state in comparison with other late Permian representatives of the family (<i>Microphon</i> spp.), for which the paedomorphic features in the cranial and postcranial anatomy are common. The homodont dentition and the simple shape of the teeth allow interpretation of <i>K. prima</i> as a predator with a wide trophic niche, the prey of which was determined by resources of the specific biotopes and might include both invertebrates and relatively small vertebrates. The new finds show that <i>K. prima</i> was typical for tetrapod associations of the northeast of the East European Platform, extend the stratigraphic range of the genus <i>Kotlassia</i> up to the terminal Permian (Zhukovian), and indicate that the family Kotlassiidae maintained its taxonomic diversity until the Permo–Triassic cenotic crisis, continuing to play a significant role in vertebrate communities in the time preceding it.</p>","PeriodicalId":19816,"journal":{"name":"Paleontological Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141939764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-03DOI: 10.1134/s0031030124600355
D. V. Grigoriev, N. G. Zverkov, A. V. Nikiforov
Abstract
The study of new finds of mosasaurids from the Izhberda locality (Southern Urals, Orenburg Region) has made it possible to record for the first time the presence of mosasaurs from the subfamilies Mosasaurinae, Tylosaurinae, and Plioplatecarpinae from the Upper Cretaceous of the Orenburg Region, including representatives of the genera Mosasaurus, Prognathodon, and Clidastes, which are 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. Therefore, the Campanian mosasaurid fauna of the Southern Urals is intermediate and includes North American–European and Asia–Pacific taxa. However, all the finds of mosasaurs from the Izhberda locality can only be identified in open nomenclature, which makes detailed comparisons of the faunas difficult. Revision of the type series of mosasaur Liodon rhipaeus Bogolyubov, 1910 from the Southern Urals has allowed us to conclude that, in addition to the three mosasaurian vertebrae, it includes the ischium and 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.
{"title":"Mosasaurs (Squamata: Mosasauridae) from the Upper Cretaceous of the Southern Urals","authors":"D. V. Grigoriev, N. G. Zverkov, A. V. Nikiforov","doi":"10.1134/s0031030124600355","DOIUrl":"https://doi.org/10.1134/s0031030124600355","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The study of new finds of mosasaurids from the Izhberda locality (Southern Urals, Orenburg Region) has made it possible to record for the first time the presence of mosasaurs from the subfamilies Mosasaurinae, Tylosaurinae, and Plioplatecarpinae from the Upper Cretaceous of the Orenburg Region, including representatives of the genera <i>Mosasaurus</i>, <i>Prognathodon</i>, and <i>Clidastes</i>, which are known from the Upper Cretaceous of North America and Western Europe. Of interest is the discovery of the tylosaurine <i>Taniwhasaurus</i>, previously known from New Zealand, Antarctica, South Africa, and Japan. Therefore, the Campanian mosasaurid fauna of the Southern Urals is intermediate and includes North American–European and Asia–Pacific taxa. However, all the finds of mosasaurs from the Izhberda locality can only be identified in open nomenclature, which makes detailed comparisons of the faunas difficult. Revision of the type series of mosasaur <i>Liodon rhipaeus</i> Bogolyubov, 1910 from the Southern Urals has allowed us to conclude that, in addition to the three mosasaurian vertebrae, it includes the ischium and posterior fragment of the mandible of a plesiosaur. <i>Liodon rhipaeus</i> is clearly a nomen dubium and the vertebrae of its type series cannot be identified more precisely than Tylosaurinae indet.</p>","PeriodicalId":19816,"journal":{"name":"Paleontological Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141939766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-03DOI: 10.1134/s0031030124600367
V. O. Gorbatcheva, N. V. Zelenkov
Abstract
Old World vultures (Aves: Accipitridae: Gypini) are large diurnal birds of prey, the characteristic inhabitants of open biotopes in Africa and southern Eurasia. Fossil remains of vultures are rather 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 second confirmed record outside its current 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 Gypsfulvus 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.
{"title":"A Vulture of the Genus Torgos (Aves: Accipitridae) in the Late Pleistocene of Azerbaijan","authors":"V. O. Gorbatcheva, N. V. Zelenkov","doi":"10.1134/s0031030124600367","DOIUrl":"https://doi.org/10.1134/s0031030124600367","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Old World vultures (Aves: Accipitridae: Gypini) are large diurnal birds of prey, the characteristic inhabitants of open biotopes in Africa and southern Eurasia. Fossil remains of vultures are rather rare; the evolution of the group is poorly studied. This article describes the skull and tarsometatarsus of the large vulture <i>Torgos platycephalus</i> sp. nov. from the Upper Pleistocene of the Binagadi locality (Azerbaijan). This is the first fossil record of the genus in the Caucasus and second confirmed record outside its current range (<i>Torgos</i> 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 <i>Torgos platycephalus</i>, <i>Aegypius monachus</i> and <i>Gyps</i> <i>fulvus</i> 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.</p>","PeriodicalId":19816,"journal":{"name":"Paleontological Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141939767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-03DOI: 10.1134/s0031030124600306
P. Yu. Petrov, N. G. Vorob’eva, A. L. Ragozina
Abstract
Microfossils and problematics from the Upper Ediacaran deposits of the Zuun-Arts Formation of the Zavkhan Terrane of Western Mongolia are discussed. 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 the microbiota were identified, and the possible depositional-ecological environment of the paleobasin was reconstructed.
{"title":"New Data on the Upper Ediacaran Microbiota of Zuun-Arts (Zavkhan Terrane, Western Mongolia)","authors":"P. Yu. Petrov, N. G. Vorob’eva, A. L. Ragozina","doi":"10.1134/s0031030124600306","DOIUrl":"https://doi.org/10.1134/s0031030124600306","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Microfossils and problematics from the Upper Ediacaran deposits of the Zuun-Arts Formation of the Zavkhan Terrane of Western Mongolia are discussed. 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 <i>Thioploca</i> bacteria <i>Candidatus Marithioploca araucae</i>. Autochthonous and allochthonous components of the microbiota were identified, and the possible depositional-ecological environment of the paleobasin was reconstructed.</p>","PeriodicalId":19816,"journal":{"name":"Paleontological Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141969111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-03DOI: 10.1134/s003103012460032x
A. V. Mazaev
Abstract
Eleven imprints of chiton valves from the Sakmarian 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 aesthete pores is shown for the first time, and the structure of the insertion plates, the important morphological characters of the genus Ochmazochiton, the earliest representative of the order Chitonida, is clarified.
{"title":"New Species of the Genus Ochmazochiton (Mollusca, Polyplacophora) from the Lower Permian Reef Limestones of Shakhtau (Southern Cis-Urals)","authors":"A. V. Mazaev","doi":"10.1134/s003103012460032x","DOIUrl":"https://doi.org/10.1134/s003103012460032x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Eleven imprints of chiton valves from the Sakmarian of the Shakhtau reef massif (Bashkir Cis-Urals) are assigned to a new species <i>Ochmazochiton uralensis</i> sp. nov. Previously, the genus <i>Ochmazochiton</i> 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 aesthete pores is shown for the first time, and the structure of the insertion plates, the important morphological characters of the genus <i>Ochmazochiton</i>, the earliest representative of the order Chitonida, is clarified.</p>","PeriodicalId":19816,"journal":{"name":"Paleontological Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141969137","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-03DOI: 10.1134/s003103012460029x
J. B. Yakupova, K. M. Akhmedenov
Abstract
An incomplete skeleton of a large ichthyosaur is described from the Upper Albian Substage of the Mangystau region of Western Kazakhstan. It consists of fragments of cranial bones (including a quadrate bone), fragments of the parietal, supratemporal, and maxillary bones, teeth, and a significant part of the spinal column of 38 vertebrae, as well as fragments of neural arches and ribs. The shape of the quadrate bone and strong teeth with a square root in cross section suggest that this find belongs to the genus Platypterygius.
{"title":"The First Representative of the Ichthyosaur Genus Platypterygius from the Albian of Western Kazakhstan","authors":"J. B. Yakupova, K. M. Akhmedenov","doi":"10.1134/s003103012460029x","DOIUrl":"https://doi.org/10.1134/s003103012460029x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>An incomplete skeleton of a large ichthyosaur is described from the Upper Albian Substage of the Mangystau region of Western Kazakhstan. It consists of fragments of cranial bones (including a quadrate bone), fragments of the parietal, supratemporal, and maxillary bones, teeth, and a significant part of the spinal column of 38 vertebrae, as well as fragments of neural arches and ribs. The shape of the quadrate bone and strong teeth with a square root in cross section suggest that this find belongs to the genus <i>Platypterygius</i>.</p>","PeriodicalId":19816,"journal":{"name":"Paleontological Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141939765","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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