Paleontological Journal最新文献_第5页

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

Paleontological Journal Pub Date : 2024-03-21 DOI: 10.1134/s0031030124600070

M. M. Astafieva

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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

Paleontological Journal Pub Date : 2024-03-21 DOI: 10.1134/s0031030123600063

Francisco Molino-Olmedo

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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

Paleontological Journal Pub Date : 2024-03-21 DOI: 10.1134/s0031030124600082

E. A. Zhegallo, V. V. Avdonin, N. E. Sergeeva

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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

Paleontological Journal Pub Date : 2024-03-21 DOI: 10.1134/s003103012360004x

S. Mahato, M. A. Khan

{"title":"The First Fossil Record of Coryphoid Palm from Siwalik Strata (Middle Miocene) of Darjeeling Foothills of Eastern Himalaya","authors":"S. Mahato, M. A. Khan","doi":"10.1134/s003103012360004x","DOIUrl":"https://doi.org/10.1134/s003103012360004x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>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 <i>Sabalites siwalicus</i> 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.</p>","PeriodicalId":19816,"journal":{"name":"Paleontological Journal","volume":"107 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2024-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140882570","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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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

Paleontological Journal Pub Date : 2024-03-14 DOI: 10.1134/s0031030123700028

A. V. Mazaev

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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

Paleontological Journal Pub Date : 2024-03-14 DOI: 10.1134/s003103012360018x

K. S. So, P. H. Kim, C. G. Won

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

Paleontological Journal 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

{"title":"On the Morphology and Ecology of the Fossil Don Hare (Lepus tanaiticus Gureev, 1964)","authors":"G. G. Boeskorov, M. Yu. Cheprasov, M. R. Pavlova, O. F. Chernova, G. P. Novgorodov, M. V. Shchelchkova, A. N. Nikolaev","doi":"10.1134/s0031030123600191","DOIUrl":"https://doi.org/10.1134/s0031030123600191","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>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. <i>Lepus tanaiticus</i> lived in open landscapes: cold steppes dominated by xerophytic communities and grass–forb and sedge–forb meadows; unlike the modern mountain hare <i>L. timidus</i>, which generally feeds on shoots and bark of trees and shrubs in winter, the winter diet of Don hare included mainly herbaceous plants.</p>","PeriodicalId":19816,"journal":{"name":"Paleontological Journal","volume":"249 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140882764","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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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

Paleontological Journal 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

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Geoecological Aspects of Collecting Fossil Remains of Mammoth Fauna 采集猛犸动物化石遗骸的地质生态学问题

IF 0.6 4区地球科学

Paleontological Journal Pub Date : 2024-03-14 DOI: 10.1134/s003103012360021x

Ya. B. Legostaeva, N. E. Sivtseva, V. F. Popov, I. V. Samsonova, A. N. Nikolaev, A. V. Protopopov

{"title":"Geoecological Aspects of Collecting Fossil Remains of Mammoth Fauna","authors":"Ya. B. Legostaeva, N. E. Sivtseva, V. F. Popov, I. V. Samsonova, A. N. Nikolaev, A. V. Protopopov","doi":"10.1134/s003103012360021x","DOIUrl":"https://doi.org/10.1134/s003103012360021x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Harsh environmental conditions of the study area result in low rates of ecosystem renewal. Results of geoecological studies at the sites of searching for and extraction of fossil remains of mammoth fauna in the middle reaches of the Indigirka River are presented. During the extraction of mammoth fauna remains using hydraulic washing-out, landscape components are disrupted, followed by leaching of the bedrock into creeks and rivers, thus leading to deterioration of abiotic components of the aquatic environment. Analysis of the geoecological state of the abiotic components of the ecosystem at the study site was used to assess the effects of the extraction of mammoth tusks by hydraulic mining. The study objects are cryogenic soils, bottom sediments and surface waters of the Semyuelyakh, Tirekhtyakh, and Indigirka rivers on the middle course segment. Soil and sediment samples were used to determine pH, mobile phosphorus, and C<sub>org</sub>. Total content of Cu, Sn, Zn, Pb, Ge, B, Cr, Ni, V, Sc, Co, Ba, Sr, Nb, Zr, Y, Yb was analyzed using the spectral semi-quantitative method. The cationic-anionic composition, mineralization, suspended solids, pH and concentrations of Mn, Pb, Ni, Cu, Cd, Zn, Co, Fe were determined in surface water samples by atomic absorption spectrometry with electrothermal atomization. The concentration coefficients and anthropogenic load index were calculated. Studies conducted in 2022 established that there was a local impact on surface water. At the site of hydraulic pumping of water used to wash away the soil, an increase in mineralization, suspended solids, color index, and changes in the trace element composition were recorded, showing that manganese, nickel, iron, copper and zinc contribute the most to water pollution levels.</p>","PeriodicalId":19816,"journal":{"name":"Paleontological Journal","volume":"107 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140882664","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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CHAPTER I. ANNOTATED SYSTEMATIC CATALOG OF TRIASSIC TETRAPODS OF RUSSIA 第 I 章俄罗斯三叠纪四足类注释系统目录

IF 0.6 4区地球科学

Paleontological Journal Pub Date : 2024-02-13 DOI: 10.1134/s003103012312002x

M. A. Shishkin, I. V. Novikov, A. G. Sennikov, V. K. Golubev, B. I. Morkovin

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