Paleontological Journal最新文献

英文中文

Radiolarians of the Kungurian Stage of the Lower Permian in the South Urals of Russia 俄罗斯南乌拉尔地区下二叠统昆古里安阶段的放射虫

IF 0.6 4区地球科学 Q3 Earth and Planetary Sciences

Paleontological Journal

Pub Date : 2023-11-30 DOI: 10.1134/s0031030123070018

M. S. Afanasieva

Abstract

Kungurian radiolarians from the Lower Permian sections Alegazovo on the Ai River and Mechetlino on the Yuryuzan River on the western slope of the South Urals were studied. The distribution of 23 radiolarian species in the studied sections was analyzed, enabling the recognition of two new radiolarian ecozones: Astroentactinia mirifica of the Saraninian Regional Substage in the Neostreptognathodus pnevi conodont Zone and Alexialeks uralicus–Octatormentum permicum of the Irenian Regional Substage, corresponding to the Neostreptognathodus imperfectus conodont Zone. The ecozones are based on the quantitative ratio of high-ranking taxa (classes). The use of the method of correlation of taxa of higher rank at the class level as an indicator of changes in paleoenvironments shows the inversion of the taxonomic composition of radiolarian associations of new ecozones of the Saraninian and Irenian regional substages indicating a change in the radiolarian habitats due to the shallowing of the basin. The taxonomic compositions of the radiolarian associations of the basinal and shelf environment are shown to be different. Three new radiolarian species from the Kungurian Stage of the South Urals are described: Astroentactinia mirifica Afanasieva, sp. nov., Helioentactinia parvispina Afanasieva, sp. nov., and H. venusta Afanasieva, sp. nov.

摘要研究了南乌拉尔西坡艾河上的阿列加佐夫剖面和于柳赞河上的梅切特利诺剖面下二叠统的昆古里放射虫。对研究剖面中23种放射虫的分布进行了分析，确定了2个新的放射虫生态区:neoliptognathodus pnevi牙形刺带Saraninian区域亚期的Astroentactinia mirifica和Irenian区域亚期的Alexialeks uralicus-Octatormentum permicum，与neoliptognathodus imperfectus牙形刺带对应。生态区是根据高阶分类群(类)的数量比例划分的。利用高阶分类群的对比方法作为古环境变化的指示指标，发现萨拉尼期和伊勒尼期区域亚阶段新生态带放射虫组合的分类组成倒置，表明盆地变浅导致放射虫栖息地发生变化。海盆环境和陆架环境放射虫群的分类组成不同。报道了南乌拉尔Kungurian期放射虫的3个新种:Astroentactinia mirifica Afanasieva, sp. nov.、Helioentactinia parvispina Afanasieva, sp. nov.和H. venusta Afanasieva, sp. nov.。

{"title":"Radiolarians of the Kungurian Stage of the Lower Permian in the South Urals of Russia","authors":"M. S. Afanasieva","doi":"10.1134/s0031030123070018","DOIUrl":"https://doi.org/10.1134/s0031030123070018","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3>Kungurian radiolarians from the Lower Permian sections Alegazovo on the Ai River and Mechetlino on the Yuryuzan River on the western slope of the South Urals were studied. The distribution of 23 radiolarian species in the studied sections was analyzed, enabling the recognition of two new radiolarian ecozones: Astroentactinia mirifica of the Saraninian Regional Substage in the Neostreptognathodus pnevi conodont Zone and Alexialeks uralicus–Octatormentum permicum of the Irenian Regional Substage, corresponding to the Neostreptognathodus imperfectus conodont Zone. The ecozones are based on the quantitative ratio of high-ranking taxa (classes). The use of the method of correlation of taxa of higher rank at the class level as an indicator of changes in paleoenvironments shows the inversion of the taxonomic composition of radiolarian associations of new ecozones of the Saraninian and Irenian regional substages indicating a change in the radiolarian habitats due to the shallowing of the basin. The taxonomic compositions of the radiolarian associations of the basinal and shelf environment are shown to be different. Three new radiolarian species from the Kungurian Stage of the South Urals are described: Astroentactinia mirifica Afanasieva, sp. nov., Helioentactinia parvispina Afanasieva, sp. nov., and H. venusta Afanasieva, sp. nov.","PeriodicalId":19816,"journal":{"name":"Paleontological Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138538724","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}

引用次数: 0

Shell Growth Increments as Indicator of Tide in the Arkhangelsk Region (Russia) during the Mikulinian Interglacial 米库良间冰期俄罗斯阿尔汉格尔斯克地区贝壳生长增量作为潮汐指示

IF 0.6 4区地球科学 Q3 Earth and Planetary Sciences

Paleontological Journal

Pub Date : 2023-11-30 DOI: 10.1134/s0031030123070109

Jan Kresten Nielsen

Abstract

Mikulinian (Eemian) marine deposits are widespread in the northern Arkhangelsk Region, Russia. Shoreface deposits have been found in exposures along the Pyoza and Vaskha rivers; however, deposits of undoubtedly tidal origin have not hitherto been recognized there. By contrast, here we show that shells of Macoma balthica (Linnaeus, 1758) (Tellinidae, Bivalvia) unearthed from the shoreface deposits show growth patterns indicating that the bivalves lived in an environment affected by tidal periodicity. The periodicity was a mixed tide with significantly diurnal inequality in the height of the low waters. In the Arkhangelsk Region, the Mikulinian hydrodynamical conditions of the tidally influenced regime are still poorly known. Because the spatial and temporal distribution of M. balthica is broad in the fossil record, its shells have a large potential for tidal interpretations, as contribution to hydrological reconstructions.

摘要俄罗斯阿尔汉格尔斯克州北部广泛分布米库期(Eemian)海相沉积。沿Pyoza河和Vaskha河的暴露处发现了岸面矿床;然而，迄今为止，在那里还没有发现毫无疑问是潮汐成因的矿床。相比之下，我们发现，从海岸沉积物中出土的Macoma balthica (Linnaeus, 1758) (Tellinidae, Bivalvia)的壳显示出生长模式，表明该双壳类动物生活在潮汐周期性影响的环境中。周期为混合潮，低潮高度日差异显著。在阿尔汉格尔斯克地区，潮汐影响下的米库利安水动力条件仍然鲜为人知。由于balthica在化石记录中的时空分布广泛，其壳具有很大的潮汐解释潜力，有助于水文重建。

引用次数: 0

The Complex Structure of the Cuticle of Pseudagnostus (Agnostina, Trilobita?) 三叶虫(pseudoagnostina, Trilobita?)的复杂表皮结构

IF 0.6 4区地球科学 Q3 Earth and Planetary Sciences

Paleontological Journal

Pub Date : 2023-11-30 DOI: 10.1134/s0031030123070080

E. B. Naimark, S. Yu. Chaika

Abstract

The cuticle of Pseudagnostus ex gr. cyclopyge, a member of Agnostina, which is currently conditionally considered as an arthropod stem lineage, was studied using SEM. It has been believed so far that the agnostoid cuticle is simple and single-layered, differing in its primitive structure from other arthropods, both modern and extinct. However, our results showed that at least in this species, the cuticle has a very complex structure. Their carapace consisted of three layers, and each layer was characterized by its own features. The outer layer, which was a combination of a thin upper prismatic unit and a thick principal unit composed of relatively loosely packed lamellae, overlies the transitional layer. The transitional layer consists of stacks of thin lamellae, directed differently in each stack. On the thin inner layer there were numerous pits with a central element (peg). The peg pits create a specific profile of the inner layer, although the functions of these peg pits are not clear. The inner layer is underlain by a basal matrix of rhomboid fibrillar mesh possibly of chitin-protein nature. Specific cuticular sensilla were found both on the outer and inner layers. On the glabellar culmination there is a V-shaped groove with two rows of digitiform sensilla in the V-branches; campaniform sensilla were located along the symmetry axis between the branches. This sensory field apparently performed a mechanosensory function responding to currents outside an enrolled animal. Given the complexity of the integument of this species, further comparison with other agnostoid species, as well as with the cuticle of other arthropods, is needed. Such a comparison would be promising for understanding the phylogenetic position of Agnostina, as well as the evolution of the arthropod exoskeleton.

摘要利用扫描电镜对目前有条件被认为是节肢动物茎系的假agnosteus ex gr. cyclopyge的角质层进行了研究。迄今为止，人们一直认为这种无知者角质层很简单，是单层的，其原始结构与其他节肢动物不同，无论是现代的还是灭绝的。然而，我们的结果表明，至少在这个物种中，角质层具有非常复杂的结构。它们的甲壳由三层组成，每一层都有自己的特征。外层覆盖在过渡层之上，由较薄的上层棱柱单元和由相对松散的片层组成的较厚的主单元组成。过渡层由一层层的薄片组成，每一层的方向不同。在薄的内层上有许多带有中心元件(钉)的凹坑。尽管这些钉坑的功能尚不清楚，但钉坑创造了内层的特定轮廓。内层为菱形纤维网状基底基质，可能为几丁质蛋白性质。外、内层均有特异的表皮感受器。在蝶弓顶部有一个v形沟槽，v形枝上有两排数字化感受器;钟形感受器沿树枝之间的对称轴分布。这个感觉场显然执行一种机械感觉功能，对实验动物外部的电流做出反应。考虑到该物种被皮的复杂性，需要与其他未知物种以及其他节肢动物的角质层进行进一步的比较。这样的比较将有助于了解Agnostina的系统发育位置，以及节肢动物外骨骼的进化。

{"title":"The Complex Structure of the Cuticle of Pseudagnostus (Agnostina, Trilobita?)","authors":"E. B. Naimark, S. Yu. Chaika","doi":"10.1134/s0031030123070080","DOIUrl":"https://doi.org/10.1134/s0031030123070080","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3>The cuticle of Pseudagnostus ex gr. cyclopyge, a member of Agnostina, which is currently conditionally considered as an arthropod stem lineage, was studied using SEM. It has been believed so far that the agnostoid cuticle is simple and single-layered, differing in its primitive structure from other arthropods, both modern and extinct. However, our results showed that at least in this species, the cuticle has a very complex structure. Their carapace consisted of three layers, and each layer was characterized by its own features. The outer layer, which was a combination of a thin upper prismatic unit and a thick principal unit composed of relatively loosely packed lamellae, overlies the transitional layer. The transitional layer consists of stacks of thin lamellae, directed differently in each stack. On the thin inner layer there were numerous pits with a central element (peg). The peg pits create a specific profile of the inner layer, although the functions of these peg pits are not clear. The inner layer is underlain by a basal matrix of rhomboid fibrillar mesh possibly of chitin-protein nature. Specific cuticular sensilla were found both on the outer and inner layers. On the glabellar culmination there is a V-shaped groove with two rows of digitiform sensilla in the V-branches; campaniform sensilla were located along the symmetry axis between the branches. This sensory field apparently performed a mechanosensory function responding to currents outside an enrolled animal. Given the complexity of the integument of this species, further comparison with other agnostoid species, as well as with the cuticle of other arthropods, is needed. Such a comparison would be promising for understanding the phylogenetic position of Agnostina, as well as the evolution of the arthropod exoskeleton.","PeriodicalId":19816,"journal":{"name":"Paleontological Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138538725","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}

引用次数: 0

Palynostratigraphy and Foraminiferal Stratigraphy of the Early Miocene Qom Formation in the Northeastern Margin of the Tethyan Seaway 特提斯海道东北缘早中新世库姆组孢粉地层和有孔虫地层

IF 0.6 4区地球科学 Q3 Earth and Planetary Sciences

Paleontological Journal

Pub Date : 2023-11-30 DOI: 10.1134/s0031030123070031

Afsaneh Dehbozorgi, Saeed Maleki

Abstract

Lower Miocene strata are exposed in the northwest of Ashtian, in the Central Iran Zone. Biostratigraphy of the Qom Formation was investigated using dinoflagellate cyst and benthic foraminifera. The stratigraphic distribution of the dinocysts lead to the identification of two distinctive stratigraphically non-continuous palynozones viz., Caligodinium amiculum (late Aquitanian) and Cordosphaeridium cantharellus (early Burdigalian) zones. This biozonation is equivalent to that recognized in Northwest Europe. Moreover, the presence of such stratigraphically distinctive taxa as Borelis melo curdica, Meandropsina iranica, Elphidium sp. 14, and Miogypsina sp. enabled the identification of the two consecutive biozones: the Elphidium sp. 14—Miogypsina Assemblage Subzone and the Borelis melo group Meandropsina iranica Assemblage Zone. The late Aquitanian–Burdigalian age is collectively attributed, therefore, to the studied section. This age assignment is based on the dinocysts and foraminifer species compared with other stratigraphic sections. The close resemblance of the dinoflagellate cyst assemblages of the Qom Basin with Northwest Europe and the northwestern Tethys during the Oligocene-early Miocene indicates a marine connection and faunal exchange between the two regions.

摘要伊朗中部阿什田地区西北部出露下中新世地层。利用鞭毛藻囊和底栖有孔虫研究了库姆组的生物地层。根据孢囊的地层分布，鉴定出两个独特的地层不连续孢囊带，即Caligodinium amiculum(晚阿基塔尼亚期)和Cordosphaeridium cantharellus(早burdigian期)。这种生物区隔与欧洲西北部的生物区隔相同。此外，甜瓜Borelis melo curdica、Meandropsina iranica、Elphidium sp. 14和Miogypsina sp.等具有地层特征的分类群的存在，使得两个连续的生物带得以确定:Elphidium sp. 14 - Miogypsina组合亚带和甜瓜Borelis melo群Meandropsina iranica组合带。因此，阿基坦-布尔迪加时代的晚期被统称为被研究的部分。这个年龄的确定是基于与其他地层剖面比较的恐龙囊和有孔虫种类。库姆盆地在渐新世至中新世早期与欧洲西北部和特提斯西北部的鞭毛藻囊组合非常相似，表明这两个地区之间存在海洋联系和动物交换。

{"title":"Palynostratigraphy and Foraminiferal Stratigraphy of the Early Miocene Qom Formation in the Northeastern Margin of the Tethyan Seaway","authors":"Afsaneh Dehbozorgi, Saeed Maleki","doi":"10.1134/s0031030123070031","DOIUrl":"https://doi.org/10.1134/s0031030123070031","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3>Lower Miocene strata are exposed in the northwest of Ashtian, in the Central Iran Zone. Biostratigraphy of the Qom Formation was investigated using dinoflagellate cyst and benthic foraminifera. The stratigraphic distribution of the dinocysts lead to the identification of two distinctive stratigraphically non-continuous palynozones viz., Caligodinium amiculum (late Aquitanian) and Cordosphaeridium cantharellus (early Burdigalian) zones. This biozonation is equivalent to that recognized in Northwest Europe. Moreover, the presence of such stratigraphically distinctive taxa as Borelis melo curdica, Meandropsina iranica, Elphidium sp. 14, and Miogypsina sp. enabled the identification of the two consecutive biozones: the Elphidium sp. 14—Miogypsina Assemblage Subzone and the Borelis melo group Meandropsina iranica Assemblage Zone. The late Aquitanian–Burdigalian age is collectively attributed, therefore, to the studied section. This age assignment is based on the dinocysts and foraminifer species compared with other stratigraphic sections. The close resemblance of the dinoflagellate cyst assemblages of the Qom Basin with Northwest Europe and the northwestern Tethys during the Oligocene-early Miocene indicates a marine connection and faunal exchange between the two regions.","PeriodicalId":19816,"journal":{"name":"Paleontological Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138543496","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}

引用次数: 0

Sinuijublatta, a New Cockroach (Insecta: Blattaria: Caloblattinidae) from the Lower Cretaceous of Paektho-Dong, Sinuiju, Democratic People’s Republic of Korea 朝鲜新义州白洞下白垩世一新蜚蠊(昆虫纲:蜚蠊亚目:小蠊科)

IF 0.6 4区地球科学 Q3 Earth and Planetary Sciences

Paleontological Journal

Pub Date : 2023-11-30 DOI: 10.1134/s0031030123070110

K. S. So, C. G. Won

Abstract

The new cockroach specimens were collected from the third member of the Sinuiju Formation from Paektho-dong, Sinuiju City, North Phyongan Province, Democratic People’s Republic of Korea (DPRK). A new genus with a new species, Sinuijublatta sinuijuensa gen. et sp. nov., is described and assigned to the family Caloblattinidae. It differs from all the other representatives of the family by the sophisticated coloration (forewing with dark coloration except for pale areas in the R and M; hindwing with dark coloration in the distal half). These well preserved specimens were collected from the grey mudstones, the third member of the Sinuiju Formation. The new species broadens the distribution and the diversity of the family Caloblattinidae.

摘要在朝鲜平安北道新义州市白浦洞新义州组第3支蟑螂中发现了新的蜚蠊标本。报道了一新种Sinuijublatta sinuijuensa gen. et sp. nov.新属并归属于Caloblattinidae科。它与该家族的所有其他代表的不同之处在于其复杂的颜色(除了R和M的苍白区域外，前饰为深色;后翅在远端有深色)。这些保存完好的标本是在新义州组第三组的灰色泥岩中采集的。新种的发现扩大了小蠹科的分布和多样性。

引用次数: 0

Two New Species of the Tribe Tesserocerini (Coleoptera: Platypodidae) from Miocene Ethiopian Amber 中新世埃塞俄比亚琥珀中扁足类二新种(鞘翅目:扁足科)

IF 0.6 4区地球科学 Q3 Earth and Planetary Sciences

Paleontological Journal

Pub Date : 2023-11-30 DOI: 10.1134/s0031030123070079

A. A. Legalov, Maximilian G. Pankowski

Abstract

Two new species of ambrosia beetles (Coleoptera: Platypodidae), one from the genus Cenocephalus Chapuis, 1865 and the other from Chaetastus Nunberg, 1953, are described from Miocene Ethiopian amber found near Alem Ketema. Cenocephalus josephi sp. nov. is similar to C. lalolaensis Nunberg, 1963 but differs based on its larger, brownish-black body, a weakly convex interstriae and a very wide metepisternum. Chaetastus samsockorum sp. nov. is similar to Ch. persimilis (Schedl, 1933) but is distinguished by a smaller body, narrower pronotum, shorter elytra and an elytral declivity that is not granulate. This is the first time the genus Chaetastus has been found in the fossil record, as well as the first documentation of the genus Cenocephalus from the Miocene of Africa. A key to Platypodidae from Ethiopian amber is provided.

摘要在Alem Ketema附近发现的中新世埃塞俄比亚琥珀中发现了两种新的ambrosia甲虫(鞘翅目:鸭蛋科)，一种来自1865年的Cenocephalus Chapuis属，另一种来自1953年的Chaetastus Nunberg。Cenocephalus josephi sp. 11 .与1963年的C. lalolaensis Nunberg相似，但不同之处在于它更大的棕黑色身体，弱凸的间隙和非常宽的头骨。Chaetastus samsockorum sp. 11 .与Ch. persimilis (Schedl, 1933)相似，但其区别在于较小的身体，较窄的前前额，较短的鞘翅和不呈颗粒状的鞘翅倾斜。这是化石记录中首次发现Chaetastus属，也是非洲中新世首次发现的Cenocephalus属。提供了埃塞俄比亚琥珀中鸭嘴兽科的钥匙。

引用次数: 0

The First Known Mesozoic Mammal in the Democratic People’s Republic of Korea 朝鲜民主主义人民共和国已知的第一个中生代哺乳动物

IF 0.6 4区地球科学 Q3 Earth and Planetary Sciences

Paleontological Journal

Pub Date : 2023-11-30 DOI: 10.1134/s0031030123070122

C. G. Won, K. S. So, S. H. Jon

Abstract

A partial skeleton of a Mesozoic mammal has been discovered from the fourth member (tuffaceous sandstone) of the Lower Cretaceous Sinuiju Formation, Paekto-dong, Sinuiju city, North Phyongan Province, Democratic People’s Republic of Korea (DPRK). This specimen exhibits several characters common to all multituberculates. The femoral head is fully spherical and inflected, and sets off from the shaft by a long neck. The tibia has the pronounced, hook-like dorsolateral process in the proximal part and the medial and lateral articulating condyles on the tibia. The astragalus and the calcaneus are in juxtaposition, as preserved. The metatarsal V is offset from the cuboid. Hence this specimen belongs to multituberculate mammals. But this specimen has also the derived characters. The parafibula is not present. The calcaneocuboid facet is transverse with respect to the length of the calcaneus. In these regards, we suggest that the preserved postcranial skeleton of the new specimen has a mosaic of primitive and derived characters. This interpretation must be corroborated by additional mammal specimens from this locality.

摘要在朝鲜平安北道新义州市白土洞下白垩统新义州组第4段(凝灰质砂岩)中发现了一具中生代哺乳动物的部分骨骼。本标本显示所有多瘤共有的几个特征。股骨头是完全球形和弯曲的，由一个长颈从股骨头轴伸出。胫骨近端有明显的钩状背外侧突，胫骨内侧和外侧有关节髁。黄芪和跟骨并置，保存完好。跖骨V与长方体偏移。因此这个标本属于多瘤哺乳动物。但这个标本也有衍生的特征。腓骨旁不存在。跟骨立方突相对于跟骨的长度是横向的。在这些方面，我们认为新标本保存的颅后骨骼具有原始和衍生特征的马赛克。这种解释必须得到来自该地区的其他哺乳动物标本的证实。

{"title":"The First Known Mesozoic Mammal in the Democratic People’s Republic of Korea","authors":"C. G. Won, K. S. So, S. H. Jon","doi":"10.1134/s0031030123070122","DOIUrl":"https://doi.org/10.1134/s0031030123070122","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3>A partial skeleton of a Mesozoic mammal has been discovered from the fourth member (tuffaceous sandstone) of the Lower Cretaceous Sinuiju Formation, Paekto-dong, Sinuiju city, North Phyongan Province, Democratic People’s Republic of Korea (DPRK). This specimen exhibits several characters common to all multituberculates. The femoral head is fully spherical and inflected, and sets off from the shaft by a long neck. The tibia has the pronounced, hook-like dorsolateral process in the proximal part and the medial and lateral articulating condyles on the tibia. The astragalus and the calcaneus are in juxtaposition, as preserved. The metatarsal V is offset from the cuboid. Hence this specimen belongs to multituberculate mammals. But this specimen has also the derived characters. The parafibula is not present. The calcaneocuboid facet is transverse with respect to the length of the calcaneus. In these regards, we suggest that the preserved postcranial skeleton of the new specimen has a mosaic of primitive and derived characters. This interpretation must be corroborated by additional mammal specimens from this locality.","PeriodicalId":19816,"journal":{"name":"Paleontological Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138543497","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}

引用次数: 0

Middle Jurassic Ostracodes from Joyan Member, Jaisalmer Formation, Jaisalmer, Rajasthan, India 印度拉贾斯坦邦Jaisalmer组Joyan段中侏罗世介形虫

IF 0.6 4区地球科学 Q3 Earth and Planetary Sciences

Paleontological Journal

Pub Date : 2023-11-30 DOI: 10.1134/s0031030123070055

Manisha Kumari

Abstract—

Eleven ostracode species from Joyan Member of Jaisalmer Formation, Jaisalmer District, Rajasthan, India are described and/or recorded. Four species—Cytherella indica, Micropneumatocythere joyanensis, Progonocythere khoslai, and Trichordis minuta—are described as new; and 4 species—Cytherella obscura Lyubimova et Mohan, Batella befotakaensis (Grekoff), Mandelstamia banniensis (Neale et Singh), Paracypris mohani Khosla, Felix et Kumari—are assigned to already known taxa. Three species—Amicytheridea? sp. A, Batella sp., and Darwinula sp.—are left in open nomenclature. Based on distribution of the fauna, one ostracode biozone, Micropneumatocythere joyanensis Range Zone, has been proposed for the beds of Joyan Member and a Bajocian age is assigned for the zone.

摘要/ abstract摘要:对印度拉贾斯坦邦Jaisalmer地区Jaisalmer组Joyan段的11种介形类进行了描述和记录。4种-印度cytherella, joyanensis, Progonocythere khoslai和Trichordis minuda -被描述为新种;4种(cytherella obscura Lyubimova et Mohan)、Batella befotakaensis (Grekoff)、Mandelstamia banniensis (Neale et Singh)、Paracypris mohani Khosla、Felix et kumari)归属于已知分类群。三个species-Amicytheridea ?sp. A .， Batella sp.，和Darwinula sp.的命名法是开放的。根据动物群的分布，提出了一个介形虫生物带——joyanensis Micropneumatocythere Range Zone，并确定了该生物带的巴约西亚时代。

引用次数: 0

The First Finding of a Representative of the Genus Crinisarina Cooper and Dutro, 1982 (Athyridida) in the Late Famennian of Northeastern Iran 伊朗东北部晚法门世首次发现的criinisarina Cooper and Dutro属(Athyridida)代表

IF 0.6 4区地球科学 Q3 Earth and Planetary Sciences

Paleontological Journal

Pub Date : 2023-11-30 DOI: 10.1134/s003103012307002x

V. V. Baranov, Y. Nasiri, J. Sharifi, R. B. Blodgett, M. H. M. Gharaie, S. T. Nikbakht, M. Hadi

Abstract

A new species Crinisarina merriami Baranov et al., sp. nov. is described from the Upper Famennian (Khoshyeilagh Formation) of Siaheh Mountain in northeastern Iran. Its ontogeny is considered. The species composition of the genus Crinisarina Cooper and Dutro, 1982 has been expanded.

摘要伊朗东北部Siaheh山上法门统(Khoshyeilagh组)描述了一新种criinisarina merriami Baranov et al, sp. 11。它的个体发生被考虑。扩大了Crinisarina Cooper and Dutro, 1982属的物种组成。

引用次数: 0

Conodonts from Moscovian–Kasimovian Boundary Interval in the Type and Reference Sections, Moscow Basin, Russia 俄罗斯莫斯科盆地莫斯科-卡西莫维安边界段的牙形刺类型和参考剖面

IF 0.6 4区地球科学 Q3 Earth and Planetary Sciences

Paleontological Journal

Pub Date : 2023-11-30 DOI: 10.1134/s0031030123070043

N. V. Goreva

Abstract

The GSSP for the Kasimovian Stage has not been fixed or defined. Several conodont species: Swadelina subexcelsa (Alekseev et Goreva, 2001), Idiognathodus turbatus (Rosscoe et Barrick, 2009) or Idiognathodus sagittalis (Kozitskaya, 1978) and Idiognathodus heckeli (Rosscoe et Barrick, 2013) were proposed and discussed by the Task Group as potential index taxa for the boundary definition. This paper describes the distribution of all potential conodont markers and refines the levels of their appearance in the key sections in the type region of the Kasimovian, considering revision of the previously obtained and new data. The traditional lower boundary of the Kasimovian Stage in the Moscow Basin coincides with the level of FAD of the conodont Swadelina subexcelsa. This species could be traced across large distances, including different continents and could be proposed as a good marker for the Moscovian-Kasimovian boundary. The first occurrences of other species as Idiognathodus sagittalis, I. turbatus and I. heckeli are fixed at the base of the middle member of the Neverovo Formation of the Khamovnikian Substage, i.e. much higher than the base of the Kasimovian that was established for the Carboniferous of Russia. The levels of the appearance of this species have a high potential for the global correlation, but it is not good solution for the definition of the Global Kasimovian Boundary.

【摘要】卡西莫范阶段的GSSP还没有固定或定义。工作组提出并讨论了几个牙形刺物种:Swadelina subbexcelsa (Alekseev et Goreva, 2001)、Idiognathodus turbatus (Rosscoe et Barrick, 2009)、Idiognathodus sagittalis (Kozitskaya, 1978)和Idiognathodus heckeli (Rosscoe et Barrick, 2013)作为边界定义的潜在索引分类群。本文描述了所有潜在牙形石标记物的分布，并结合对已有资料和新资料的修正，对卡西莫瓦岩类型区关键剖面的牙形石标记物的出现水平进行了改进。莫斯科盆地kasasimovian期的传统下边界与牙形刺Swadelina亚尖牙的FAD水平相吻合。这个物种可以跨越很远的距离，包括不同的大陆，并且可以作为莫斯科-卡西莫维安边界的一个很好的标记。其他物种如Idiognathodus sagittalis、I. turbatus和I. heckeli的首次出现地点固定在khamovnikiian亚阶段Neverovo组中段的底部，即远高于为俄罗斯石炭纪建立的Kasimovian的底部。该物种的出现水平具有很高的全球相关潜力，但它不是全球卡西莫瓦边界定义的好解。

{"title":"Conodonts from Moscovian–Kasimovian Boundary Interval in the Type and Reference Sections, Moscow Basin, Russia","authors":"N. V. Goreva","doi":"10.1134/s0031030123070043","DOIUrl":"https://doi.org/10.1134/s0031030123070043","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3>The GSSP for the Kasimovian Stage has not been fixed or defined. Several conodont species: Swadelina subexcelsa (Alekseev et Goreva, 2001), Idiognathodus turbatus (Rosscoe et Barrick, 2009) or Idiognathodus sagittalis (Kozitskaya, 1978) and Idiognathodus heckeli (Rosscoe et Barrick, 2013) were proposed and discussed by the Task Group as potential index taxa for the boundary definition. This paper describes the distribution of all potential conodont markers and refines the levels of their appearance in the key sections in the type region of the Kasimovian, considering revision of the previously obtained and new data. The traditional lower boundary of the Kasimovian Stage in the Moscow Basin coincides with the level of FAD of the conodont Swadelina subexcelsa. This species could be traced across large distances, including different continents and could be proposed as a good marker for the Moscovian-Kasimovian boundary. The first occurrences of other species as Idiognathodus sagittalis, I. turbatus and I. heckeli are fixed at the base of the middle member of the Neverovo Formation of the Khamovnikian Substage, i.e. much higher than the base of the Kasimovian that was established for the Carboniferous of Russia. The levels of the appearance of this species have a high potential for the global correlation, but it is not good solution for the definition of the Global Kasimovian Boundary.","PeriodicalId":19816,"journal":{"name":"Paleontological Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138538719","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}

引用次数: 0

首页上一页

下一页尾页

类型

全部化学•材料生命科学医学物理工程技术环境•农林材料科学地球科学法学管理学化学环境科学与生态学计算机科学教育学经济学农林科学人文科学生物学数学物理与天体物理心理学综合性期刊其他工业工程理学历史学农学文学信息工程

数据库

全部 ACS Publications Elsevier ieeexplore Springer The Royal Society of Chemistry Wiley

期刊

Paleontological Journal

全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.

﹀