REVUE DE MICROPALEONTOLOGIE最新文献

英文中文

Ostracods taxonomic study and other faunistic record from Costa Bausa (Buccheri, Southeastern Sicily)

IF 0.7 Q4 PALEONTOLOGY

REVUE DE MICROPALEONTOLOGIE

Pub Date : 2025-01-20 DOI: 10.1016/j.revmic.2024.100830

Francesco Sciuto , Angela Baldanza , Agatino Reitano

In Costa Bausa, along the left side of the Torrente Mazzarino (NE Buccheri, SE Sicily), marine sands referred to the Pliocene by many authors for their stratigraphic position and the molluscs fauna they contain, crop out unconformably above the Miocene carbonate succession. In the present study, the taxonomy of ostracods of these sands is performed and new species are described, the foraminifera are analyzed for the first time and a taxonomic list of molluscs is also provided. The ostracod fauna is composed of specimens mostly belonging to shallow marine genera, such as Aurila, Neonesidea, Bosquetina, Callistocythere, Carynocythereis, Cistacythereis, Cytherelloidea, Cytheretta, Costa, Graptocythere, Grinioneis, Loxoconcha, Mutilus, Caudites, Pontocythere, Semicytherura, Tenedocythere, Urocythereis, Verrucocythereis and Xestoleberis. Among them, eight species are newly described: Perissocytheridea (Kroemmelbeinella) hiblaea n. sp., Aurila costabausaensis n. sp., Aurila daphnidis n. sp., Aurila mazzarinoensis n. sp., Aurila sanctiandreae n. sp., Tenedocythere forticostata n. sp., Cytheretta buccheriensis n. sp., Verrucocythereis verrucomurata n. sp.

Among planktonic foraminifera, only few specimens of Orbulina universa, O. suturalis, Trilobatus trilobus and T. sacculifer occur. The assemblage of benthic foraminifera is characterized by Amphistegina lobifera, A. lessonii, Elphidium crispum, E. macellum, Ammonia beccarii, A. parkinsoniana, Lobatula lobatula, Cancris auricula, Patellina corrugata, Quinqueloculina seminulum, Massilina oblonga, Oolina exagona and O. lineata.

The molluscs association found has helped to relate the studied levels to the Late Pliocene.

{"title":"Ostracods taxonomic study and other faunistic record from Costa Bausa (Buccheri, Southeastern Sicily)","authors":"Francesco Sciuto , Angela Baldanza , Agatino Reitano","doi":"10.1016/j.revmic.2024.100830","DOIUrl":"10.1016/j.revmic.2024.100830","url":null,"abstract":"<div><div>In Costa Bausa, along the left side of the Torrente Mazzarino (NE Buccheri, SE Sicily), marine sands referred to the Pliocene by many authors for their stratigraphic position and the molluscs fauna they contain, crop out unconformably above the Miocene carbonate succession. In the present study, the taxonomy of ostracods of these sands is performed and new species are described, the foraminifera are analyzed for the first time and a taxonomic list of molluscs is also provided. The ostracod fauna is composed of specimens mostly belonging to shallow marine genera, such as <em>Aurila, Neonesidea, Bosquetina, Callistocythere, Carynocythereis, Cistacythereis, Cytherelloidea, Cytheretta, Costa, Graptocythere, Grinioneis, Loxoconcha, Mutilus, Caudites, Pontocythere, Semicytherura, Tenedocythere, Urocythereis, Verrucocythereis</em> and <em>Xestoleberis</em>. Among them, eight species are newly described: <em>Perissocytheridea</em> (<em>Kroemmelbeinella</em>) <em>hiblaea</em> n. sp., <em>Aurila costabausaensis</em> n. sp., <em>Aurila daphnidis</em> n. sp., <em>Aurila mazzarinoensis</em> n. sp., <em>Aurila sanctiandreae</em> n. sp., <em>Tenedocythere forticostata</em> n. sp., <em>Cytheretta buccheriensis</em> n. sp., <em>Verrucocythereis verrucomurata</em> n. sp.</div><div>Among planktonic foraminifera, only few specimens of <em>Orbulina universa, O. suturalis, Trilobatus trilobus</em> and <em>T. sacculifer</em> occur. The assemblage of benthic foraminifera is characterized by <em>Amphistegina lobifera, A. lessonii, Elphidium crispum, E. macellum, Ammonia beccarii, A. parkinsoniana, Lobatula lobatula, Cancris auricula, Patellina corrugata, Quinqueloculina seminulum, Massilina oblonga, Oolina exagona</em> and <em>O. lineata</em>.</div><div>The molluscs association found has helped to relate the studied levels to the Late Pliocene.</div></div>","PeriodicalId":45442,"journal":{"name":"REVUE DE MICROPALEONTOLOGIE","volume":"86 ","pages":"Article 100830"},"PeriodicalIF":0.7,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143571485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Spumellarian, collodarian, and entactinarian radiolarians observed in sediment traps from the southern Ionian Sea (eastern mediterranean) 在爱奥尼亚海南部（地中海东部）沉积物捕集器中观察到的 Spumellarian、collodarian 和 entactinarian 放射虫

IF 0.7 Q4 PALEONTOLOGY

REVUE DE MICROPALEONTOLOGIE

Pub Date : 2024-12-04 DOI: 10.1016/j.revmic.2024.100820

Marie Cueille , Taniel Danelian , Kenji M. Matsuzaki

Based on sediment trap material collected from the southern Ionian Sea (Eastern Mediterranean), this study describes and illustrates 54 radiolarian species, 48 of which are spumellarians, 3 collodarians and 3 entactinarians. The presence of Larcopyle buetschlii chenmuhongi, Phorticium polycladum, and Polysolenia collina is reported for the first time from the Mediterranean Sea. We also identified for the first time Spongodendron macrodoras in the eastern Mediterranean Sea, previously known only from the western Mediterranean. Despite their geographical proximity, only six species are in common with the radiolarian fauna of the Adriatic Sea. We reviewed the biogeographical distribution and the known depth habitat of all species identified here at the species level. Most of them are known from tropical to temperate regions, although we also encountered few species with cold-water affinities such as Lithelius minor, Lithelius nautiloides, Hexacromyum enthacanthum, Rhizosphaera mediana, and Spongodiscus resurgens. Most of the encountered species are surface to sub-surface dwellers, including several known symbiont-bearing species, and only few are deep-dwellers, such as Hexacromyum enthacanthum, Tetrapetalon echinaster, Lithelius nautiloides and Lithelius minor.

{"title":"Spumellarian, collodarian, and entactinarian radiolarians observed in sediment traps from the southern Ionian Sea (eastern mediterranean)","authors":"Marie Cueille , Taniel Danelian , Kenji M. Matsuzaki","doi":"10.1016/j.revmic.2024.100820","DOIUrl":"10.1016/j.revmic.2024.100820","url":null,"abstract":"<div><div>Based on sediment trap material collected from the southern Ionian Sea (Eastern Mediterranean), this study describes and illustrates 54 radiolarian species, 48 of which are spumellarians, 3 collodarians and 3 entactinarians. The presence of <em>Larcopyle buetschlii chenmuhongi, Phorticium polycladum</em>, and <em>Polysolenia collina</em> is reported for the first time from the Mediterranean Sea. We also identified for the first time <em>Spongodendron macrodoras</em> in the eastern Mediterranean Sea, previously known only from the western Mediterranean. Despite their geographical proximity, only six species are in common with the radiolarian fauna of the Adriatic Sea. We reviewed the biogeographical distribution and the known depth habitat of all species identified here at the species level. Most of them are known from tropical to temperate regions, although we also encountered few species with cold-water affinities such as <em>Lithelius minor, Lithelius nautiloides, Hexacromyum enthacanthum, Rhizosphaera mediana</em>, and <em>Spongodiscus resurgens</em>. Most of the encountered species are surface to sub-surface dwellers, including several known symbiont-bearing species, and only few are deep-dwellers, such as <em>Hexacromyum enthacanthum, Tetrapetalon echinaster, Lithelius nautiloides</em> and <em>Lithelius minor</em>.</div></div>","PeriodicalId":45442,"journal":{"name":"REVUE DE MICROPALEONTOLOGIE","volume":"86 ","pages":"Article 100820"},"PeriodicalIF":0.7,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143570515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Progress on late Paleozoic radiolarians and their biostratigraphic applications – In memory of Martial CARIDROIT

IF 0.7 Q4 PALEONTOLOGY

REVUE DE MICROPALEONTOLOGIE

Pub Date : 2024-12-01 DOI: 10.1016/j.revmic.2024.100821

Taniel Danelian , Paula Noble , Patrick De Wever

引用次数: 0

Radiolarian age and geochemical characteristics of the Permian bedded chert sequence in the Soi Dao area, Chanthaburi, Southeast of Thailand 泰国东南部尖竹汶府 Soi Dao 地区二叠纪层状燧石序列的放射虫年龄和地球化学特征

IF 0.7 Q4 PALEONTOLOGY

REVUE DE MICROPALEONTOLOGIE

Pub Date : 2024-12-01 DOI: 10.1016/j.revmic.2024.100786

Waraphorn Phromsuwan , Yoshihito Kamata , Takuya Hayashi , Kei-ichi Kobayashi , Thasinee Charoentitirat , Katsumi Ueno , Apsorn Sardsud

Radiolarian assemblages and geochemistry from Permian chert and siliceous mudstone in the Soi Dao, Chanthaburi area of southeastern Thailand, are used here to determine the age and depositional environment of these rocks. Moderate-to-well preserved radiolarian were obtained from three study areas, from bedded cherts and siliceous mudstones of Early Asselian to Early Capitanian, Sakmarian to Roadian, and Capitanian to Changhsingian age. Considering the lithofacies, age, and chemical composition of the rocks, a primary stratigraphy can be reconstructed that consists, in ascending order, of basaltic rocks, radiolarian bedded cherts, siliceous mudstones, and clastics made of alternations of sandstone and mudstone. Geochemical analyses, particularly chondrite-normalized REEs patterns of chert and siliceous mudstone, show a gradual change in the degree of the Ce-negative anomaly, which decrease towards the younger strata. This change indicates that the depositional environment of the Permian rock was at the beginning highly influenced by hydrothermal activity, which decreased with time, while the influx of terrestrial clastics increased. Permian bedded cherts accompanied by basalts and siliceous mudstones recognized in the study area are very similar to the Paleo-Tethys bedded cherts in terms of their lithofacies and microscopic features; however, their depositional period is much shorter, indicating that they were deposited in another oceanic basin (i.e., a back-arc basin). The chemical composition also shows that the influence of hydrothermal activity weakened over time and the influence of terrigenous clastics increased.

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引用次数: 0

Preliminary report on Permian radiolarians from the Numakuma peninsula in Japan: Paleontological evidence for the presence of the Ultra-Tamba Belt 关于日本沼沼半岛二叠纪放射虫的初步报告：超丹巴带存在的古生物学证据

IF 0.7 Q4 PALEONTOLOGY

REVUE DE MICROPALEONTOLOGIE

Pub Date : 2024-12-01 DOI: 10.1016/j.revmic.2023.100751

Tsuyoshi Ito, Daisuke Sato

Permian radiolarians were obtained from mudstone of an accretionary complex cropping out on the Numakuma Peninsula of Japan. The establishment of a Permian age for the mudstone suggests that these rocks belong to the Permian accretionary complex and therefore to the Ultra-Tamba Belt.

引用次数: 0

Late Permian radiolarian Neoalbaillella caridroiti assemblage from the Loufanggou, Guangyuan-Shangsi area, Sichuan Province, China 中国四川广元上寺地区楼房沟晚二叠世放射虫Neoalbaillella caridroiti组合

IF 0.7 Q4 PALEONTOLOGY

REVUE DE MICROPALEONTOLOGIE

Pub Date : 2024-12-01 DOI: 10.1016/j.revmic.2024.100784

Kiyoko Kuwahara , Akira Yao , Jianxin Yao

A well-preserved Lopingian (Late Permian) radiolarian assemblage including Neoalbaillella has been recovered from the Loufanggou 2 section of the Dalong Formation in northern Sichuan, China. The assemblage consists mainly of spherical radiolarians with spongy tests, such as Entactinaria and Spumellaria. Albaillellaria and Latentifistularia are relatively rare in the assemblage. The occurrence of Neoalbaillella caridroiti nov. sp., Neoalbaillella antaixiangi Yao and Kuwahara and Albaillella triangularis Ishiga, Kito and Imoto indicates that the Loufanggou 2 section may be correlated with the Neoalbaillella optima assemblage zone. Until now, only Neoalbaillella caridroiti nov. sp. and Neoalbaillella antaixiangi were known to occur in the northern Sichuan area. This limited occurrence indicates the possibility that the Dalong Formation depositional basin in northern Sichuan Province was a geographically limited area, and the radiolarian assemblage shows its provincialism.

引用次数: 0

Guadalupian–Lopingian (Middle–Late Permian) radiolarians from clastic rocks and zircon U–Pb ages of intercalated tuff and tuffaceous sandstone on Sado Island, central Japan 日本中部佐渡岛Guadalupian-Lopingian(中晚二叠世)碎屑岩放射虫及介入性凝灰岩和凝灰质砂岩锆石U-Pb年龄

IF 0.7 Q4 PALEONTOLOGY

REVUE DE MICROPALEONTOLOGIE

Pub Date : 2024-12-01 DOI: 10.1016/j.revmic.2023.100750

Toshiyuki Kurihara , Keisuke Suzuki , Tsuyoshi Ito , Hirotaka Ishida , Hayato Ueda , Atsushi Matsuoka

We investigated Permian strata in the Ota area of the Kosado Hills, Sado Island, central Japan, and their depositional ages were determined based on radiolarian biostratigraphy and zircon U–Pb dating. We also focused on the geology of the region and its lithologic correlation with other geological units in the Inner Zone of Southwest Japan. The radiolarian analysis identified the presence of Follicucullus porrectus and F. dilatatus in mudstone exposed on the coastline of Ota, indicating a middle–late Capitanian to early Changhsingian age. Mudstone exposed along the forest road in the Ota area contained Cariver charveti, suggesting a late Capitanian–early Changhsingian age. Zircon U–Pb dating of the tuff layer intercalated within the Follicucullus-bearing mudstone yielded a weighted-mean age of 259.9 ± 2.0 Ma, corresponding to a Capitanian–Wuchiapingian age. The tuffaceous sandstone interbedded with mudstone containing C. charveti yielded a weighted-mean age of 264.1 ± 6.3 Ma, which covers the Roadian to Wuchiapingian ages. The youngest model peak age (256.6 ± 2.6 Ma; Wuchiapingian) provides the most reliable estimate of the maximum depositional age. The Paleozoic strata in the Kosado Hills have previously been correlated with the Ultra-Tamba and Maizuru belts in Southwest Japan based on fossil occurrences. Our findings indicate that the Permian rocks in the Kosado Hills exhibit differences in lithology from those in the Ultra-Tamba belt but share similarities with the upper Guadalupian–Lopingian strata in the Maizuru belt.

研究了日本中部佐渡岛佐渡山太田地区的二叠纪地层，并根据放射虫生物地层学和锆石U-Pb定年确定了其沉积时代。我们还重点研究了该地区的地质及其与日本西南内带其他地质单元的岩性对比。放射虫分析表明，在太田海岸线暴露的泥岩中发现了卵泡虫(Follicucullus porrectus)和扩张虫(F. dilatatus)，表明其发育于capitian中晚期至长兴期早期。太田区林道沿线暴露的泥岩中含有卡瑞佛沙维提，表明其时代为凯都世晚期-长兴世早期。对含滤泡泥岩中嵌套的凝灰岩层进行锆石U-Pb定年，加权平均年龄为259.9±2.0 Ma，对应于capitian - wuchiapingian时代。含C. charveti的凝灰质砂岩与泥岩互层的加权平均年龄为264.1±6.3 Ma，涵盖了路甸期至五家坪期。最小模型峰值年龄(256.6±2.6 Ma);五家坪期)提供了最可靠的最大沉积年龄估计。根据化石分布，以前已将Kosado Hills的古生代地层与日本西南部的Ultra-Tamba和Maizuru带进行了对比。研究结果表明，科萨多山二叠系岩石在岩性上与超坦巴带有所不同，但与迈祖鲁带上瓜达鲁普—洛平系有相似之处。

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引用次数: 0

Desmoinesian (middle Pennsylvanian) radiolarians from the Excello Shale of Kansas, USA 美国堪萨斯州 Excello 页岩中的 Desmoinesian（宾夕法尼亚中期）放射虫

IF 0.7 Q4 PALEONTOLOGY

REVUE DE MICROPALEONTOLOGIE

Pub Date : 2024-12-01 DOI: 10.1016/j.revmic.2024.100772

Galina P. Nestell , John P. Pope , Merlynd K. Nestell

Desmoinesian (Middle Pennsylvanian) radiolarians are described from carbonate concretions found in the black phosphatic facies in strata of the Excello Shale Member of the Fort Scott Limestone (Marmaton Group) in southeastern Kansas (K69 section), USA. Ten new species of radiolarians are described: Albaillella kansaensis, Holdsworthella trifurca, Pseudoalbaillella deformata, Entactinia jayhawkensis, E. heckeli, E. boardmani, Apophysiacus martiali, Moskovistella insolita, Palacantholithus umbrelliformis, and Ormistonella perrara. The Kansas radiolarian assemblage is different from the assemblage described from the Excello Shale of Iowa in the preservation and taxonomic composition. The radiolarians are preserved as pyritized internal molds or regular tests replaced by pyrite, and unidentifiable organic material. The domination of entactinarians and albaillellarians in the Kansas assemblage and their poor to excellent preservation indicate the formation of early diagenetic calcareous concretions in anoxic conditions. The appearance of the spicular radiolarian genus Palacantholithus indicates an influx of relatively cold water connected with upwelling. The Kansas location was much farther offshore (450 km basinward) compared to the Iowa localities suggesting a difference in thermocline depth, affecting water temperature, oxygenation, and nutrients.

{"title":"Desmoinesian (middle Pennsylvanian) radiolarians from the Excello Shale of Kansas, USA","authors":"Galina P. Nestell , John P. Pope , Merlynd K. Nestell","doi":"10.1016/j.revmic.2024.100772","DOIUrl":"10.1016/j.revmic.2024.100772","url":null,"abstract":"<div><div><span>Desmoinesian (Middle Pennsylvanian) radiolarians<span> are described from carbonate concretions found in the black phosphatic facies in strata of the Excello Shale Member of the Fort Scott Limestone (Marmaton Group) in southeastern Kansas (K69 section), USA. Ten new species of radiolarians are described: </span></span><em>Albaillella kansaensis, Holdsworthella trifurca, Pseudoalbaillella deformata, Entactinia jayhawkensis, E. heckeli, E. boardmani, Apophysiacus martiali, Moskovistella insolita, Palacantholithus umbrelliformis</em>, and <em>Ormistonella perrara</em>. The Kansas radiolarian assemblage is different from the assemblage described from the Excello Shale of Iowa in the preservation and taxonomic composition. The radiolarians are preserved as pyritized internal molds or regular tests replaced by pyrite, and unidentifiable organic material. The domination of entactinarians and albaillellarians in the Kansas assemblage and their poor to excellent preservation indicate the formation of early diagenetic calcareous concretions in anoxic conditions. The appearance of the spicular radiolarian genus <em>Palacantholithus</em><span> indicates an influx of relatively cold water connected with upwelling. The Kansas location was much farther offshore (450 km basinward) compared to the Iowa localities suggesting a difference in thermocline depth, affecting water temperature, oxygenation, and nutrients.</span></div></div>","PeriodicalId":45442,"journal":{"name":"REVUE DE MICROPALEONTOLOGIE","volume":"85 ","pages":"Article 100772"},"PeriodicalIF":0.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140277137","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Late Paleozoic radiolarians from the Kozuki Formation of the Ultra-Tamba Terrane in the Kanbayashi area, northern Kyoto Prefecture, Southwest Japan

IF 0.7 Q4 PALEONTOLOGY

REVUE DE MICROPALEONTOLOGIE

Pub Date : 2024-12-01 DOI: 10.1016/j.revmic.2024.100806

Yoshiaki Sugamori , Kotomi Ikeda

The Ultra-Tamba Terrane within the Inner Zone of Southwest Japan is interpreted as a Guadalupian (Middle Permian) to Lopingian (Late Permian) subduction-related accretionary complex. The Kozuki Formation is the UT3 unit of the terrane and is mainly present in eastern Okayama and western Hyogo prefectures. Recently, it was shown that the Kozuki Formation is also distributed in the Kanbayashi area of northern Kyoto Prefecture based on the similarity of its lithological features and tectonic position. The exact age of the formation was unknown until now. In this study, radiolarian fossils are discovered in two sections, allowing for the determination of the ages of cherts and clastics within the Kozuki Formation. The cherts yielded radiolarians such as Curvalbailella u-forma (Holdsworth and Jones) and Curvalbailella chilensis (Ling and Forsythe), which indicate a latest Carboniferous or early Cisuralian, Early Permian age, and the mudstones yielded radiolarians such as Latentifistula banchengensis Wang, Pseudotormentus cf. kamigoriensis De Wever and Caridroit, Quadriremis gracilis (De Wever and Caridroit), which indicate Guadalupian to Lopingian, but most likely Guadalupian, age. This study establishes the Kozuki Formation in the studied area as a part of the UT3 unit of the Ultra-Tamba Terrane, confirms its age correlation with other regions, and emphasizes the northeasternmost extension of the unit.

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引用次数: 0

New species of encrusting foraminifera from the Carboniferous (Upper Mississippian) of Central Russia 俄罗斯中部石炭纪（上密西西比统）有壳无孔虫新品种

IF 0.7 Q4 PALEONTOLOGY

REVUE DE MICROPALEONTOLOGIE

Pub Date : 2024-10-16 DOI: 10.1016/j.revmic.2024.100819

Olev Vinn , Aleksandr A. Mironenko

New encrusting foraminifera Tolypammina kalugensis sp. nov. is described from the Carboniferous of Central Russia. The test of the new species is large and completely attached to hard substrate, consisting of an ovoid-shaped proloculus followed by an undivided tubular second chamber. The encrusting fauna is primarily composed of a monospecific association of T. kalugensis sp. nov. Additionally, there are only a few occurrences of small, phosphatic encrusting brachiopods. The remarkably low diversity and nearly monospecific encrusting fauna found in the Dashkovka Member of the Gurovo Formation indicate unusual environmental conditions. The scarcity of benthic organisms could be attributed to oxygen deficiency. Furthermore, these black and green clays of the Dashkovka Member likely accumulated in the deepest parts of the basin, situated below the photic zone, which further supports the hypothesis of oxygen-poor conditions.

引用次数: 0

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