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Chapter 6. Early Proterozoic Phosphorites of the Kola Peninsula 第 6 章 科拉半岛早新生代磷酸盐岩科拉半岛早新生代磷酸盐岩
IF 0.6 4区 地球科学 Q3 Earth and Planetary Sciences Pub Date : 2024-03-21 DOI: 10.1134/s0031030124600069
M. M. Astafieva

Abstract

Phosphorites from the Pechenga Basin, with an age of 2.04 Ga, were produced by microorganisms. Phosphorites of the Pechenga Greenstone Belt were found in the form of numerous rounded, slightly deformed fragments (Fig. 1). The earliest Early Proterozoic (Pechenga) phosphorites show all the characteristics of a cyanobacterial mat—a prokaryotic benthic community united in a physical structure by the glycocalyx.

摘要 年龄为 2.04 Ga 的佩钦嘎盆地磷酸盐岩是由微生物产生的。佩成雅绿岩带的磷酸盐岩以大量圆形、轻微变形的碎片形式被发现(图 1)。最早的早新生代(佩成阿)磷酸盐岩显示了蓝藻垫的所有特征--蓝藻垫是一种由糖萼结合成物理结构的原核底栖生物群落。
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引用次数: 0
Chapter 2. Modern Fossilization and Geyserites of Kamchatka 第 2 章 堪察加半岛的现代化石和间歇泉堪察加半岛的现代化石和间歇泉
IF 0.6 4区 地球科学 Q3 Earth and Planetary Sciences Pub Date : 2024-03-21 DOI: 10.1134/s0031030124600021
E. A. Zhegallo, L. V. Zaitseva, G. A. Karpov, O. S. Samylina

Abstract

The results of a long-term electron microscopic study of Kamchatka geyserites are presented showing biological remains of unique preservation and a wide variety of cyanobacteria silicification types. The data obtained made it possible to consider the geyserites of Kamchatka as a model object for bacterial-paleontological studies.

摘要介绍了对堪察加间歇喷泉岩进行长期电子显微镜研究的结果,显示了保存独特的生物遗迹和多种蓝藻硅化类型。所获得的数据使人们有可能将堪察加半岛的间歇泉视为细菌古生物学研究的示范对象。
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引用次数: 0
Chapter 7. Early Precambrian Ferruginous Quartzites (Jaspilites) 第7章早前寒武纪铁纹石英岩(Jaspilites)
IF 0.6 4区 地球科学 Q3 Earth and Planetary Sciences Pub Date : 2024-03-21 DOI: 10.1134/s0031030124600070
M. M. Astafieva

Abstract

Microfossils of presumably bacterial origin were found in 2.7–2.8 Ga banded ferruginous quartzites in Karelia and the Kola Peninsula. The determination of organic carbon content and balance calculations showed that these ferruginous quartzites accumulated in an organic-rich environment. A comparative analysis of the morphology of modern and Neoarchaean microorganisms suggests the bacterial origin of some of the magnetite in the studied quartzites.

摘要 在卡累利阿和科拉半岛的 2.7-2.8 Ga 带状铁纹石英岩中发现了可能来自细菌的微化石。有机碳含量的测定和平衡计算表明,这些铁锈色石英岩是在富含有机物的环境中堆积而成的。对现代微生物和新石器时代微生物形态的比较分析表明,所研究石英岩中的部分磁铁矿来源于细菌。
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引用次数: 0
Description of Cretoctesis conchimillanae gen. et sp. nov. Larva from Burmese Amber (Coleoptera: Buprestidae) Description of Cretoctesis conchimillanae gen.缅甸琥珀中的幼虫(鞘翅目:琥珀科)
IF 0.6 4区 地球科学 Q3 Earth and Planetary Sciences Pub Date : 2024-03-21 DOI: 10.1134/s0031030123600063
Francisco Molino-Olmedo

Abstract

The larva of Cretoctesis conchimillanae gen. et sp. nov. from Burmese amber of Cenomanian (Middle Cretaceous) age is described. The new taxon belongs to the family Buprestidae, subfamily Polycestinae, tribe Polyctesini. It is the first formally described fossil larva of the family and the third species of the subfamily for the Cretaceous. Cretoctesis places the origin of the tribe Polyctesini in the Middle Cretaceous, them being the first taxon in the fossil record for the tribe.

摘要 描述了缅甸琥珀中新发现的Cretoctesis conchimillanae gen.这一新类群属于Buprestidae科、Polycestinae亚科、Polyctesini族。它是该科第一个正式描述的化石幼虫,也是该亚科在白垩纪的第三个物种。Cretoctesis将Polyctesini部落的起源定为中白垩世,它们是该部落化石记录中的第一个类群。
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引用次数: 0
Chapter 8. Ferromanganese Ores of the Oceans 第 8 章 海洋中的铁锰矿海洋中的锰铁矿石
IF 0.6 4区 地球科学 Q3 Earth and Planetary Sciences Pub Date : 2024-03-21 DOI: 10.1134/s0031030124600082
E. A. Zhegallo, V. V. Avdonin, N. E. Sergeeva

Abstract

Biomorphic microstructures of ferromanganese oxide ores are studied, focusing on the issues of types of microstructures, activities of bacterial communities that influence the formation of the structure of oxide ores, and determination of the basis of ferromanganese ore genesis. Ferromanganese oxide ores are a model object of bacterial paleontology for the quality and detail of their study.

摘要 研究了氧化锰铁矿石的生物微结构,重点是微结构的类型、影响氧化矿石结构形成的细菌群落活动以及确定氧化锰铁矿石成因的基础等问题。氧化锰铁矿石是细菌古生物学的典范对象,其研究质量和细节都很高。
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引用次数: 0
The First Fossil Record of Coryphoid Palm from Siwalik Strata (Middle Miocene) of Darjeeling Foothills of Eastern Himalaya 东喜马拉雅大吉岭山麓西瓦利克地层(中新世)首次记录的蝶形棕榈化石
IF 0.6 4区 地球科学 Q3 Earth and Planetary Sciences Pub Date : 2024-03-21 DOI: 10.1134/s003103012360004x
S. Mahato, M. A. Khan

Abstract

Although coryphoid fossil palms are well-known from the Upper Cretaceous sediments of India, there is no fossil evidence of coryphoid palms from Siwalik sediments to date. Here, we report for the first time coryphoid palm fronds from the lower Siwalik strata (Chunabati Formation; middle Miocene) of Darjeeling foothills of eastern Himalaya. The leaf architecture, as well as the epidermal anatomy of the Siwalik specimens, suggests their resemblance with those of extant members of the palm sub-family Coryphoideae. The Siwalik specimens are characterized morphologically by palmate fan-shaped leaf with a well-preserved costa (costapalmate), prominent leaf segments emerging at an acute angle from the costa, numerous parallel secondary lateral veins on either side of the mid-vein, and anatomically by hypostomatic leaf blade, rectangular to polygonal epidermal cells, cyclocytic type of stomata and the presence of characteristic trichome bases. Based on a thorough comparison with earlier reported coryphoid palm leaves bearing epidermal anatomy, we placed our specimens under a new fossil species Sabalites siwalicus sp. nov. that is also supported by cluster analysis. The present fossils indicate that coryphoid palms were present in eastern Himalaya by the Siwalik time and they experienced a warm and humid tropical environment during the time of deposition.

摘要尽管印度上白垩统沉积物中的蝶形棕榈化石已广为人知,但迄今为止还没有从西瓦利克沉积物中发现蝶形棕榈化石的证据。在此,我们首次报告了喜马拉雅山东部大吉岭山麓的下西瓦利克地层(Chunabati Formation;中新世中期)中的蝶形棕榈叶片。西瓦利克标本的叶片结构和表皮解剖表明,它们与现存的棕榈亚科苣苔属植物的叶片结构和表皮解剖相似。Siwalik 标本的形态特征是掌状扇形叶,叶缘保存完好(叶缘),突出的叶片从叶缘呈锐角出现,中脉两侧有许多平行的次侧脉;解剖特征是叶片下位,表皮细胞呈矩形至多边形,气孔呈环状,并有特征性的毛状体基部。根据与早期报道的具有表皮解剖结构的蝶形棕榈叶片的全面比较,我们将标本归入新的化石物种 Sabalites siwalicus sp.目前的化石表明,喜马拉雅东部早在西瓦利克时期就出现了蝶形花棕榈,它们在沉积期间经历了温暖潮湿的热带环境。
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引用次数: 0
The Rostroconch Family Bransoniidae from the Early Permian Shakhtau Reef Massif (Mollusca, Southern Cis-Urals) 二叠纪早期沙克陶礁石群(软体动物,南西乌拉尔)中的罗盘螺科 Bransoniidae
IF 0.6 4区 地球科学 Q3 Earth and Planetary Sciences Pub Date : 2024-03-14 DOI: 10.1134/s0031030123700028
A. V. Mazaev

Abstract

For the first time, rostroconchs of the family Bransoniidae are described from the Lower Permian deposits of the Cis-Urals. The described assemblage includes three new species of three genera, of which two genera are new: Hoarepora uralica sp. nov., Ashaconcha rara gen. et sp. nov., and Agidelia magnifica gen. et sp. nov. The paper clarifies the systematic position of the family Bransoniidae, its diagnosis and composition, as well as the diagnosis and species composition of the genus Hoarepora Mapes in Mazaev, 2022. The species described here are the most ancient representatives of the family Bransoniidae, which were discovered on the territory of the East European Craton and the Urals. In general, taking into account the previously described representatives of Arceodomus, the Early Permian assemblage of rostroconch mollusks of the Southern Cis-Urals suggests a permanent paleogeographic connections of the Ural Strait in the Asselian and Sakmarian centuries with the basins of North America and the Tethyan Realm.

摘要首次描述了产自西乌拉尔下二叠统沉积层的 Bransoni 科喙海螺。所描述的组合包括三个属的三个新种,其中两个属为新种:Hoarepora uralica sp.本文澄清了 Bransoniidae 科的系统位置、诊断和组成,以及 Mazaev, 2022 年对 Hoarepora Mapes 属的诊断和物种组成。这里描述的物种是在东欧克拉通和乌拉尔地区发现的 Bransoniidae 科最古老的代表。总的来说,考虑到之前描述的 Arceodomus 代表,南西乌拉尔地区早二叠世的喙壳类软体动物群表明,乌拉尔海峡在阿塞利亚和萨克马里亚世纪与北美盆地和哲罗纪盆地有着永久的古地理联系。
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引用次数: 0
First Articulated Rhamphorhynchoid Pterosaur from the Early Cretaceous of the Democratic People’s Republic of Korea 来自朝鲜民主主义人民共和国早白垩世的第一只有关节的鼠龙类翼龙
IF 0.6 4区 地球科学 Q3 Earth and Planetary Sciences Pub Date : 2024-03-14 DOI: 10.1134/s003103012360018x
K. S. So, P. H. Kim, C. G. Won

Abstract

A nearly complete skeleton of a Mesozoic pterosaur, which probably belongs to Jeholopterus (Anurognathidae), was discovered in the third member of the Sinuiju Formation, Paektho-dong, Sinuiju City, North Phyongan Province, Democratic People’s Republic of Korea (DPRK). This find documents the first pterosaur fossil from the Mesozoic of DPRK.

摘要 在朝鲜平安北道新义州市白草洞新义州地层第三系发现了一具近乎完整的中生代翼龙骨骼,该翼龙可能属于热河翼龙(Anurognathidae)。这一发现记录了朝鲜中生代的第一件翼龙化石。
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引用次数: 0
On the Morphology and Ecology of the Fossil Don Hare (Lepus tanaiticus Gureev, 1964) 论唐兔化石(Lepus tanaiticus Gureev,1964 年)的形态学和生态学
IF 0.6 4区 地球科学 Q3 Earth and Planetary Sciences Pub Date : 2024-03-14 DOI: 10.1134/s0031030123600191
G. G. Boeskorov, M. Yu. Cheprasov, M. R. Pavlova, O. F. Chernova, G. P. Novgorodov, M. V. Shchelchkova, A. N. Nikolaev

Abstract

Frozen mummies and their parts of the fossil Don hare are studied for the first time. They were found in permafrost deposits of the Upper Pleistocene in different regions of Yakutia: Verkhoyansky, Abyysky, and Nizhnekolymsky districts. Radiocarbon dating has shown that the studied hares lived in the second half of the Late Neopleistocene, 50.1–23.6 thousand years ago (the time of Karginian interstadial–Sartanian glaciation). A number of morphological adaptations of this extinct species to living conditions in the Arctic steppes of the Pleistocene of Yakutia have been identified: greater length and, apparently, body weight, short ears and feet, a strong locomotor apparatus of the hind limbs, hard hair brushes on the feet, and excellent heat-protective properties of the hair, including the specific microstructure of hairs. Comparison of the hairs of an adult individual and a month-old individual of Don hare has shown a polymorphism of the fur. The hairs are characterized by the presence of grooves, a columnar medulla, and a chevron cuticle, which allow an unmistakable identification of the taxon. In both individuals, specific hairs on the soles of the pads form a protective “cushion” that facilitates movement along snow, ice, and swamps. Based on palynological studies, understanding of the paleoecology of this species is expanded. Lepus tanaiticus lived in open landscapes: cold steppes dominated by xerophytic communities and grass–forb and sedge–forb meadows; unlike the modern mountain hare L. timidus, which generally feeds on shoots and bark of trees and shrubs in winter, the winter diet of Don hare included mainly herbaceous plants.

摘要 首次研究了唐兔化石的冷冻木乃伊及其部分。它们是在雅库特不同地区的上更新世永久冻土沉积中发现的:它们发现于雅库特不同地区的上更新世永久冻土沉积物中:上霍扬斯基区、阿比斯基区和下科廖姆斯基区。放射性碳测年结果表明,所研究的野兔生活在新更新世晚期的后半期,距今 5.01-23.6 万年(卡金间期-萨尔坦冰川时期)。已发现该灭绝物种在形态上适应了雅库特更新世北极草原的生活条件:体长更大,体重显然也更重,耳朵和脚都很短,后肢运动能力很强,脚上有坚硬的毛刷,毛发具有很好的防热性能,包括毛发的特殊微观结构。对唐兔成年个体和一个月大个体的毛发进行比较后发现,唐兔的毛发具有多态性。毛发的特点是有沟槽、柱状髓质和楔形角质层,这使得分类群的鉴别无懈可击。在这两个个体中,垫底上的特殊毛发形成了一个保护性的 "垫子",便于在雪、冰和沼泽地带移动。在古生物学研究的基础上,对该物种古生态学的了解得到了扩展。唐兔(Lepus tanaiticus)生活在开阔的地貌中:以旱生群落、草-草和莎草-草草甸为主的寒冷草原;与现代山兔(L. timidus)不同,唐兔冬季一般以树木和灌木的嫩枝和树皮为食,而主要以草本植物为食。
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引用次数: 0
Macaca (Cercopithecidae: Papionini) from the Sungho Cave no. 3, Sungho County, Roth Hwanghae Province, the Democratic People’s Republic of Korea 来自朝鲜民主主义人民共和国黄海道圣湖郡圣湖洞穴第 3 号的猕猴(猿猴科:Papionini)。3, Sungho 郡, Roth Hwanghae Province, the Democratic People's Republic of Korea
IF 0.6 4区 地球科学 Q3 Earth and Planetary Sciences Pub Date : 2024-03-14 DOI: 10.1134/s0031030123600178
Kum Sik Han, Kwang Sik So, Rye Sun Choe, Kwang Hyok Pak, Chun Jong Kim, Hak Song Ju, Jun Chol Kang

Abstract

A specimen of Macaca was discovered in the Sungho cave no. 3, Sungho County, North Hwanghae Province, the Democratic People’s Republic of Korea. The only available skull remains are represented by a mandible, which displays a combination of mandibular and dental features indicating that the specimen may belong to the species Macaca mulatta. This discovery extends the geographical range of the genus Macaca.

摘要 在朝鲜民主主义人民共和国黄海北道圣湖郡圣湖洞穴 3 号发现了猕猴标本。3 号洞穴中发现的。仅有的头骨残骸以下颌骨为代表,下颌骨和牙齿的组合特征表明该标本可能属于猕猴(Macaca mulatta)物种。这一发现扩大了猕猴属的地理范围。
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引用次数: 0
期刊
Paleontological Journal
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