Palaeoworld最新文献

英文中文

Diversity and discrimination of large ornithopods revealed through their tracks (Lower Cretaceous, Spain): A phenetic correlation approach 通过足迹揭示大型鸟脚类动物的多样性和鉴别力（西班牙，下白垩统）：表型关联方法

IF 1.7 3区地球科学 Q2 PALEONTOLOGY

Palaeoworld

Pub Date : 2024-03-24 DOI: 10.1016/j.palwor.2024.03.005

Large ornithopods were frequent in the alluvial-to-coastal sedimentary systems developed during the Barremian in the Iberian Peninsula. Here, several pes track casts of large ornithopods from the Barremian Camarillas Formation of the southwestern sector of the Maestrazgo Basin (Iberian Basin, Spain) are analyzed. Two morphotypes of tracks from three different size classes are differentiated based on some morphological features, such as length of digits, the width of the “heel” pad impression, and width of the proximal part of digit III. These casts are assigned to Caririchnium isp. Morphotype 1 is represented by small to large-sized tracks, whereas Morphotype 2 by medium-sized tracks. Morphological variation seen among tracks of Morphotype 1 is interpreted to be possibly an ontogenetic variation. On the contrary, the differences seen between Morphotype 1 and 2 cannot be explained only by extramorphological causes, so might represent different trackmakers, especially when taking into account the considerable Barremian ornithopod diversity. A modified phenetic correlation is carried out between several well-preserved casts and the identified feet of Barremian ornithopods from Iberia, in order to infer the putative trackmakers. Morphotype 1 fits with the foot skeletal structure of the large styracosternan Iguanodon, including small-sized tracks that are perfectly accommodated to that of perinates of I. galvensis. Morphotype 2 matches better to the pes skeletal structure of the medium-sized Mantellisaurus. Similar two morphotypes can be also identified in other areas of the Lower Cretaceous of Europe, so, they could be tentatively produced by the two sized groups of styracosternans typical in the Early Cretaceous of Europe. Therefore, the ichnological analysis may allow differentiation of the diversity known through the direct record. In addition, the paleoecological analysis indicates a spatial niche partitioning between two size groups of styracosternans, because large-sized tracks and bones of these dinosaurs are the most common in such sediments.

在伊比利亚半岛巴里米亚时期形成的冲积-海岸沉积系统中，经常出现大型兽脚类动物。本文分析了 Maestrazgo 盆地（西班牙伊比利亚盆地）西南部巴雷姆时期 Camarillas 地层中大型鸟脚类动物的几枚脚印。根据一些形态特征，如指骨长度、"脚跟 "垫印的宽度和第三指骨近端部分的宽度，对三个不同大小级别的两种形态的足迹进行了区分。这些石膏被归类为 Caririchnium isp。形态 1 代表小到大的足迹，而形态 2 代表中等大小的足迹。形态类型 1 的足迹之间的形态差异可能是一种个体发育差异。相反，形态 1 和形态 2 之间的差异不能仅用形态外的原因来解释，因此可能代表了不同的履带制作者，特别是考虑到巴里米亚节肢动物的多样性。为了推断可能的履带制作者，我们对伊比利亚地区几种保存完好的铸模和已鉴定的巴里米亚兽脚类足部进行了修正的表型相关性分析。形态 1 与大型伊瓜齿兽的足部骨骼结构相吻合，包括与伊瓜齿兽周足完全吻合的小尺寸足迹。形态 2 与中型曼特力龙的脚骨骼结构更为吻合。在欧洲下白垩世的其他地区也可以发现类似的两种形态，因此可以初步认为它们是由欧洲早白垩世典型的两种大小的styracosternans类群产生的。因此，通过手足学分析，可以对直接记录中已知的多样性进行区分。此外，古生态学分析表明，两种体型的styracosternans之间存在空间生态位分区，因为这些恐龙的大体型足迹和骨骼在此类沉积物中最为常见。

{"title":"Diversity and discrimination of large ornithopods revealed through their tracks (Lower Cretaceous, Spain): A phenetic correlation approach","authors":"","doi":"10.1016/j.palwor.2024.03.005","DOIUrl":"10.1016/j.palwor.2024.03.005","url":null,"abstract":"<div><div>Large ornithopods were frequent in the alluvial-to-coastal sedimentary systems developed during the Barremian in the Iberian Peninsula. Here, several pes track casts of large ornithopods from the Barremian Camarillas Formation of the southwestern sector of the Maestrazgo Basin (Iberian Basin, Spain) are analyzed. Two morphotypes of tracks from three different size classes are differentiated based on some morphological features, such as length of digits, the width of the “heel” pad impression, and width of the proximal part of digit III. These casts are assigned to Caririchnium isp. Morphotype 1 is represented by small to large-sized tracks, whereas Morphotype 2 by medium-sized tracks. Morphological variation seen among tracks of Morphotype 1 is interpreted to be possibly an ontogenetic variation. On the contrary, the differences seen between Morphotype 1 and 2 cannot be explained only by extramorphological causes, so might represent different trackmakers, especially when taking into account the considerable Barremian ornithopod diversity. A modified phenetic correlation is carried out between several well-preserved casts and the identified feet of Barremian ornithopods from Iberia, in order to infer the putative trackmakers. Morphotype 1 fits with the foot skeletal structure of the large styracosternan Iguanodon, including small-sized tracks that are perfectly accommodated to that of perinates of I. galvensis. Morphotype 2 matches better to the pes skeletal structure of the medium-sized Mantellisaurus. Similar two morphotypes can be also identified in other areas of the Lower Cretaceous of Europe, so, they could be tentatively produced by the two sized groups of styracosternans typical in the Early Cretaceous of Europe. Therefore, the ichnological analysis may allow differentiation of the diversity known through the direct record. In addition, the paleoecological analysis indicates a spatial niche partitioning between two size groups of styracosternans, because large-sized tracks and bones of these dinosaurs are the most common in such sediments.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"33 6","pages":"Pages 1643-1667"},"PeriodicalIF":1.7,"publicationDate":"2024-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140405871","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Review and update on the applications of inertinite macerals in coal geology, paleoclimatology, and paleoecology 惰性矿物在煤炭地质学、古气候学和古生态学中的应用回顾与更新

IF 1.7 3区地球科学 Q2 PALEONTOLOGY

Palaeoworld

Pub Date : 2024-03-18 DOI: 10.1016/j.palwor.2024.03.003

Inertinite is a coal component group recognized under microscope. The origin, formation, and applications of inertinite continue to be debated. Many important achievements have been reported in the recent years. The most important advance is that the presence of inertinite macerals has been used as the most critical evidence of paleowildfires. However, the origin of some micrinite has been recognized as liptinitic/huminitic or as kaolinite, and even as voids. Some secretinite and funginite can be formed by microbial and fungal oxidation. Some researchers questioned the validity of using the maceral (including inertinite) ratios to indicate the depositional environment and appealed to stop using maceral parameters (including inertinite) to explain peat-forming environments and vegetation. Because the proven inertinite macerals formed by organic matter degradation comprised only a small part of all inertinite groups, most inertinite macerals can be used as evidence of paleowildfires, and the inertinite macerals may be used to estimate the wildfire type. The inertinite reflectance values may be used to estimate the wildfire temperature, and the oxygen level can be estimated by the inertinite contents. Furthermore, the relationship between inertinite and other wildfire evidences, e.g., char, charcoal, soot, and fusain, has also been clarified.

惰性石英是一种在显微镜下可以识别的煤成分。关于惰性石英的起源、形成和应用仍有争议。近年来，已有许多重要成果被报道。最重要的进展是，惰性微晶的存在已被作为古野火的最关键证据。然而，一些微晶石的来源已被确认为锂辉石/光辉石或高岭石，甚至是空隙。一些秘长岩和风成岩可能是由微生物和真菌氧化形成的。一些研究人员对使用大理石（包括惰性石）比率来表示沉积环境的有效性提出质疑，并呼吁停止使用大理石参数（包括惰性石）来解释泥炭形成环境和植被。由于已证实的有机质降解形成的惰性大分子只占所有惰性大分子组的一小部分，因此大部分惰性大分子可用作古野火的证据，惰性大分子可用于估计野火类型。惰性无机物的反射率值可用来估计野火的温度，氧气含量可通过惰性无机物的含量来估计。此外，惰性石墨与其他野火证据（如炭、木炭、烟尘和燧石）之间的关系也得到了澄清。

{"title":"Review and update on the applications of inertinite macerals in coal geology, paleoclimatology, and paleoecology","authors":"","doi":"10.1016/j.palwor.2024.03.003","DOIUrl":"10.1016/j.palwor.2024.03.003","url":null,"abstract":"<div><div>Inertinite is a coal component group recognized under microscope. The origin, formation, and applications of inertinite continue to be debated. Many important achievements have been reported in the recent years. The most important advance is that the presence of inertinite macerals has been used as the most critical evidence of paleowildfires. However, the origin of some micrinite has been recognized as liptinitic/huminitic or as kaolinite, and even as voids. Some secretinite and funginite can be formed by microbial and fungal oxidation. Some researchers questioned the validity of using the maceral (including inertinite) ratios to indicate the depositional environment and appealed to stop using maceral parameters (including inertinite) to explain peat-forming environments and vegetation. Because the proven inertinite macerals formed by organic matter degradation comprised only a small part of all inertinite groups, most inertinite macerals can be used as evidence of paleowildfires, and the inertinite macerals may be used to estimate the wildfire type. The inertinite reflectance values may be used to estimate the wildfire temperature, and the oxygen level can be estimated by the inertinite contents. Furthermore, the relationship between inertinite and other wildfire evidences, e.g., char, charcoal, soot, and fusain, has also been clarified.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"33 6","pages":"Pages 1449-1463"},"PeriodicalIF":1.7,"publicationDate":"2024-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140168774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Earliest upper Barremian (Lower Cretaceous) record of bivalve Pinna (Pinnidae) from the Kopet-Dagh Basin, northeastern Iran and its possible predators 伊朗东北部 Kopet-Dagh 盆地最早的上白垩世（下白垩世）双壳类动物 Pinna (Pinnidae) 记录及其可能的捕食者

IF 1.7 3区地球科学 Q2 PALEONTOLOGY

Palaeoworld

Pub Date : 2024-03-18 DOI: 10.1016/j.palwor.2024.03.004

The bivalves Pinna sp. cf. cretacea (Schlotheim, 1813) and Pinna cretacea cretacea (Schlotheim, 1813) are systematically described for the first time from the ammonite-constrained upper Barremian (Lower Cretaceous) strata of the Kopet-Dagh Basin, northeastern Iran. This is also, the first record of the Family Pinnidae from the Kopet-Dagh Basin. The specimens were collected from the basal part of the Sarcheshmeh Formation, exposed in the Bojnurd city, North Khorasan province. Additionally, this study includes observations on predation scars (such as scalloped, embayed, and cleft scars), and encrustations by orbitolinids on the Pinna samples. Insights into the contemporary paleoenvironment, characterized by quiet and shallow waters with a soft, muddy substrate, are also discussed.

(Schlotheim, 1813) 和 (Schlotheim, 1813) 首次在伊朗东北部 Kopet-Dagh 盆地受氨蛋白约束的上巴里米统（下白垩统）地层中系统地描述了双壳类。这也是科佩特-达赫盆地凤蝶科的首次记录。标本采集自北呼罗珊省布伊诺德市出露的萨尔切什梅赫层基底部分。此外，这项研究还包括对捕食疤痕（如扇形疤痕、凹陷疤痕和裂缝疤痕）以及眶鞘类动物在样本上结壳情况的观察。本研究还讨论了对当代古环境的见解，该环境的特点是水域安静、浅，底质松软、泥泞。

引用次数: 0

First Dapingian linguliform microbrachiopods from the Argentine Precordillera (Cuyania terrane): Taxonomy and faunal relationships 阿根廷前山地带（Cuyania terrane）的第一批Dapingian舌状微腕足动物：分类和动物关系

IF 1.7 3区地球科学 Q2 PALEONTOLOGY

Palaeoworld

Pub Date : 2024-03-18 DOI: 10.1016/j.palwor.2024.03.002

New records of linguliform brachiopods from the Middle Ordovician of Argentina, coming from the base of the Gualcamayo Formation, are described and illustrated. The sampled levels correspond to the first 3 m at the Potrerillos Creek section, Argentine Precordillera of San Juan, assigned to the lower part of the Baltoniodus navis Zone (middle Dapingian). The fauna consists of the lingulids Palaeoglossa? sp., Elliptoglossa vulgaris Hansen and Holmer and Paterula sp., together with the acrotretids Conotreta andina Lavié, Serra and Feltes, Scaphelasma zharykensis Popov, Torynelasma? sp., Numericoma simplex?, and Eoconulus sp. This relatively diverse association is the first of Dapingian age in the Cuyania terrane with a mixed fauna, which shows affinities with the regions of Baltica, Bohemia, Avalonia, South China, and Laurentia.

本文描述并说明了阿根廷中奥陶纪瓜尔卡马约地层底部的鳞状腕足类新记录。取样层位于阿根廷圣胡安前缘山脉 Potrerillos 溪地段的前 3 米处，属于中奥陶纪（中达平纪）下段。该动物群包括矛形目（Lingulids）、汉森（Hansen）、霍尔默（Holmer）和sp.，以及针形目（acrotretids）的拉维（Lavié）、塞拉（Serra）和费尔特斯（Feltes）、波波夫（Popov）、sp.、sp.和 sp.。这个相对多样化的群落是库亚尼亚地层中第一个达平夏时代的混合动物群落，显示出与波罗的海、波希米亚、阿瓦鲁尼亚、华南和劳伦西亚地区的亲缘关系。

引用次数: 0

Palynological assemblages from Hongguleleng Formation of Western Junggar, Northwest China and their correlation with conodont zonation 中国西北准噶尔西部红古楞地层的古生物组合及其与锥齿动物分带的相关性

IF 1.7 3区地球科学 Q2 PALEONTOLOGY

Palaeoworld

Pub Date : 2024-03-18 DOI: 10.1016/j.palwor.2024.03.001

The Upper Devonian Hongguleleng Formation is a significant stratigraphic unit near the Frasnian/Famennian and Devonian/Carboniferous boundaries of the Kazakhstan Paleoplate. However, its age is still under debate. A new palynostratigraphic analysis was conducted at the Gennaren section to provide a more accurate biostratigraphic assignment. In this study, we identified 43 species belonging to 26 spore genera, including those in open nomenclature. Despite the poor preservation of the palynofloras, the spore taxa were categorized into two assemblages. Assemblage I is established at the lower part of the lower member of the Hongguleleng Formation, containing Cornispora varicornata, cf. Auroraspora pseudocrista, and Cyrtospora cristifera. Assemblage II is from the upper part of the lower member of the Hongguleleng Formation, including Grandispora cornuta, Grandispora famennensis var. famennensis, Grandispora cf. famennensis var. minutus, Grandispora microseta, and Rugospora radiata. These assemblages are compared with the Western European DV Oppel Zone (lower-middle Famennian), and the GF to VCo Oppel zones. The assemblages are equivalent to the conodont crepida–rhomboidea and marginifera to Lower trachytera zones (middle-upper Famennian).

泥盆纪上统红古楞地层是哈萨克斯坦古地层中靠近弗拉斯年/法门年和泥盆纪/石炭纪边界的一个重要地层单元。然而，其年龄仍存在争议。为了提供更准确的生物地层划分，我们在 Gennaren 剖面进行了新的古地层分析。在这项研究中，我们确定了属于 26 个孢粉属的 43 个物种，其中包括那些开放命名的物种。尽管古植物保存较差，但我们还是将孢子类群分为两个集合体。组合 I 位于红古楞地层下部，包含、、和。组合 II 位于红古楞地层下统的上部，包括Ⅴ变种、Ⅴ变种、Ⅴ变种和Ⅴ变种。这些组合与西欧 DV 奥佩尔带（法门年中下期）以及 GF 至 VCo 奥佩尔带进行了比较。这些化石群与同牙- 和下区（法门纪中上叶）相当。

{"title":"Palynological assemblages from Hongguleleng Formation of Western Junggar, Northwest China and their correlation with conodont zonation","authors":"","doi":"10.1016/j.palwor.2024.03.001","DOIUrl":"10.1016/j.palwor.2024.03.001","url":null,"abstract":"<div><div>The Upper Devonian Hongguleleng Formation is a significant stratigraphic unit near the Frasnian/Famennian and Devonian/Carboniferous boundaries of the Kazakhstan Paleoplate. However, its age is still under debate. A new palynostratigraphic analysis was conducted at the Gennaren section to provide a more accurate biostratigraphic assignment. In this study, we identified 43 species belonging to 26 spore genera, including those in open nomenclature. Despite the poor preservation of the palynofloras, the spore taxa were categorized into two assemblages. Assemblage I is established at the lower part of the lower member of the Hongguleleng Formation, containing Cornispora varicornata, cf. Auroraspora pseudocrista, and Cyrtospora cristifera. Assemblage II is from the upper part of the lower member of the Hongguleleng Formation, including Grandispora cornuta, Grandispora famennensis var. famennensis, Grandispora cf. famennensis var. minutus, Grandispora microseta, and Rugospora radiata. These assemblages are compared with the Western European DV Oppel Zone (lower-middle Famennian), and the GF to VCo Oppel zones. The assemblages are equivalent to the conodont crepida–rhomboidea and marginifera to Lower trachytera zones (middle-upper Famennian).</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"33 6","pages":"Pages 1580-1593"},"PeriodicalIF":1.7,"publicationDate":"2024-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140168876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

New Ediacaran tubular fossils from southern Shaanxi, China 中国陕西南部新发现的埃迪卡拉管状化石

IF 1.7 3区地球科学 Q2 PALEONTOLOGY

Palaeoworld

Pub Date : 2024-03-12 DOI: 10.1016/j.palwor.2024.01.004

Much palaeontology research on biomineralization has been directed to studying the Cambrian radiation of biomineralizing animals. The evolutionary radiation of biomineralization in the Cambrian Period was preceded by weakly biomineralized animals in the late Ediacaran period around 550–539 Ma. Here we report many new tubular fossils from the upper part of the Ediacaran Dengying Formation in the Lijiagou section, Ningqiang area, southern Shaanxi Province, China, consisting of two new genera and species, namely Shufangtubulus inornatus n. gen. n. sp., and Palaeorhopalon spiniferum n. gen. n. sp. The newly discovered materials expand the list of the Ediacaran tubular fossils. The borings first found on the outer surface of Sinotubulites baimatuoensis are similar to those of Cloudina, which may reveal the earliest predator-prey dynamics. The small and delicate drill holes detected on the inner walls of Sinotubulites baimatuoensis are inferred to be infested traces by parasitism.

古生物学对生物矿化的研究主要集中在研究寒武纪生物矿化动物的辐射。在寒武纪生物矿化演化辐射之前，大约 550-539 Ma 的埃迪卡拉晚期出现了弱生物矿化动物。在此，我们报告了中国陕西省南部宁强地区李家沟地段埃迪卡拉纪登封地层上部的许多新管状化石，包括两个新属和新种，即n. gen.首次发现的埃迪卡拉管状化石外表面的钻孔与Ⅳ类化石的钻孔相似，这可能揭示了最早的捕食者与被捕食者之间的动态关系。在埃迪卡拉管化石内壁上发现的小而精致的钻孔被推断为寄生虫出没的痕迹。

引用次数: 0

Middle Devonian brachiopods from Qujing of eastern Yunnan, China and their biostratigraphical and palaeoecological implications 中国云南东部曲靖中泥盆世腕足动物及其生物地层学和古生态学意义

IF 1.7 3区地球科学 Q2 PALEONTOLOGY

Palaeoworld

Pub Date : 2024-03-05 DOI: 10.1016/j.palwor.2024.02.005

The Middle Devonian Qujing Formation at its type locality in eastern Qujing City, Yunnan was investigated for the first time. At the Wutaishan section, the formation is characterized by fossiliferous limestone and marls with massive terrigenous inputs. About 1292 individual specimens and several fragmented stringocephalid brachiopods were collected and systematically identified in this study. They are assigned into 18 species of 13 genera from 9 families in 6 orders. Undispiriferoides species and their detailed internal structures are for the first time illustrated, with a new species Undispiriferoides qujingensis being established. We recognize the assemblages of Stringocephalus and Ambothyris-Spinatrypa. The former is characterized by Stringocephalus burtini and accompanied with plenty of Meristella kütsingensis, M. flayelli, and Desquamatia sp. that are commonly present in the middle Givetian in South China. Whereas the latter is identified in the late Givetian and mainly contains small-sized, smooth spiriferides (e.g., Emanuella takwanensis, Ambothyris panxiensis) and atrypides Spinatrypa. The brachiopod assemblages in the section were largely correlated with environmental parameters and ecological factors in the near-shoal belt, where alternating clastic and marine carbonate depositions were disrupted by sea-level fluctuations. The Stringocephalus fauna favorably diversified in reefal and carbonate-dominated substrates and was replaced by the soft-bottom dwelling habitants of the Ambothyris-Spinatrypa assemblage, coinciding with multiple and progressive sea-level fluctuations in the Givetian.

首次对云南曲靖市东部中泥盆统曲靖地层进行了研究。在五台山地段，该地层的特征是含化石的石灰岩和泥灰岩，并伴有大量的陆相沉积。本研究采集了约 1292 个腕足动物个体标本和一些腕足动物碎片，并对其进行了系统鉴定。这些腕足动物被划分为 6 目 9 科 13 属 18 种，首次展示了这些物种及其详细的内部结构，并确定了一个新物种。我们发现了和-的集合体。华南中生代常见的Ⅳ和Ⅴ。而后者则出现在晚五代，主要包括小尺寸、光滑的螺旋足类（如、）和蝼蛄。该剖面的腕足类群在很大程度上与近滩地带的环境参数和生态因素有关，海平面的波动破坏了该地区碎屑岩和海相碳酸盐岩的交替沉积。在珊瑚礁和碳酸盐为主的基质中，腕足动物发生了有利的多样化，并被软底栖生物--腕足动物群所取代，而这一现象与 Givetian 地区多次、渐进的海平面波动相吻合。

{"title":"Middle Devonian brachiopods from Qujing of eastern Yunnan, China and their biostratigraphical and palaeoecological implications","authors":"","doi":"10.1016/j.palwor.2024.02.005","DOIUrl":"10.1016/j.palwor.2024.02.005","url":null,"abstract":"<div><div>The Middle Devonian Qujing Formation at its type locality in eastern Qujing City, Yunnan was investigated for the first time. At the Wutaishan section, the formation is characterized by fossiliferous limestone and marls with massive terrigenous inputs. About 1292 individual specimens and several fragmented stringocephalid brachiopods were collected and systematically identified in this study. They are assigned into 18 species of 13 genera from 9 families in 6 orders. Undispiriferoides species and their detailed internal structures are for the first time illustrated, with a new species Undispiriferoides qujingensis being established. We recognize the assemblages of Stringocephalus and Ambothyris-Spinatrypa. The former is characterized by Stringocephalus burtini and accompanied with plenty of Meristella kütsingensis, M. flayelli, and Desquamatia sp. that are commonly present in the middle Givetian in South China. Whereas the latter is identified in the late Givetian and mainly contains small-sized, smooth spiriferides (e.g., Emanuella takwanensis, Ambothyris panxiensis) and atrypides Spinatrypa. The brachiopod assemblages in the section were largely correlated with environmental parameters and ecological factors in the near-shoal belt, where alternating clastic and marine carbonate depositions were disrupted by sea-level fluctuations. The Stringocephalus fauna favorably diversified in reefal and carbonate-dominated substrates and was replaced by the soft-bottom dwelling habitants of the Ambothyris-Spinatrypa assemblage, coinciding with multiple and progressive sea-level fluctuations in the Givetian.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"33 6","pages":"Pages 1564-1579"},"PeriodicalIF":1.7,"publicationDate":"2024-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140105348","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Widespread Thalassinoides facies from the upper Silurian of South China: A case study from the northwestern Hunan Province, middle to upper Yangtze Block 华南上志留统中广泛分布的Thalassinoides面：来自湖南省西北部、长江中上游区块的个案研究

IF 1.7 3区地球科学 Q2 PALEONTOLOGY

Palaeoworld

Pub Date : 2024-03-01 DOI: 10.1016/j.palwor.2024.02.004

The upper Silurian of South China records the first, and perhaps the only occurrence of widespread (spanning over 1400 km), thick to very thick bedded Thalassinoides facies (TVTFs) after the Late Ordovician mass extinction. However, the palaeobiological, palaeoecological features and potential significance of these facies are yet to be demonstrated. A case study at northwestern Hunan Province, middle to upper Yangtze Block, reports the occurrence of TVTFs in a storm dominated open marine succession of the upper Silurian Xiaoxi Formation, which can be further assigned to lower offshore, upper offshore, offshore transition to distal lower shoreface, and proximal lower to middle shoreface settings. The regular changes of bioturbation intensity and maximum penetrating depth from various settings suggest that local energy levels, especially frequency of storms could have controlled the development of Thalassinoides, while their burrow sizes were generally confined by population densities. The Thalassinoides facies could have been constructed by unknown crustaceans, which generally conducted a deposit-feeding strategy. The return of widespread TVTFs in the tropical oceans of South China during the late Silurian could reflect a restored primary productivity, an elevated oxygen level, and a final recovery of benthic ecosystem to pre-extinction level after the Late Ordovician mass extinction. TVTFs could have remarkably shaped the late Silurian benthic environment in view of their high abundance, large burrow sizes, nature of deep tiered burrow systems and a deposit-feeding strategy.

华南上新统记录了晚奥陶世大灭绝后首次，或许也是唯一一次出现的大范围（跨度超过1400公里）、厚至极厚层（TVTFs）。然而，这些地层的古生物学、古生态学特征及其潜在意义仍有待证实。一项位于湖南省西北部、长江中上游区块的案例研究报告了在上志留纪小溪地层以风暴为主的开阔海相沉积中出现的TVTF，可进一步划分为近岸下部、近岸上部、近岸向远岸下部过渡、近岸下部向中岸下部过渡。不同背景下生物扰动强度和最大穿透深度的规律性变化表明，当地的能量水平，尤其是风暴频率可能控制了Ⅳ类生物的发育，而它们的洞穴大小一般受种群密度的限制。这些岩层可能是由不知名的甲壳类动物建造的，它们通常采取以沉积物为食的策略。志留纪晚期华南热带海洋中TVTF的广泛回归可能反映了晚奥陶世大灭绝后初级生产力的恢复、氧水平的升高以及底栖生态系统最终恢复到灭绝前的水平。考虑到TVTFs的高丰度、大洞穴尺寸、深层洞穴系统的性质以及沉积物取食策略，它们可能极大地塑造了志留纪晚期的底栖环境。

{"title":"Widespread Thalassinoides facies from the upper Silurian of South China: A case study from the northwestern Hunan Province, middle to upper Yangtze Block","authors":"","doi":"10.1016/j.palwor.2024.02.004","DOIUrl":"10.1016/j.palwor.2024.02.004","url":null,"abstract":"<div><div>The upper Silurian of South China records the first, and perhaps the only occurrence of widespread (spanning over 1400 km), thick to very thick bedded Thalassinoides facies (TVTFs) after the Late Ordovician mass extinction. However, the palaeobiological, palaeoecological features and potential significance of these facies are yet to be demonstrated. A case study at northwestern Hunan Province, middle to upper Yangtze Block, reports the occurrence of TVTFs in a storm dominated open marine succession of the upper Silurian Xiaoxi Formation, which can be further assigned to lower offshore, upper offshore, offshore transition to distal lower shoreface, and proximal lower to middle shoreface settings. The regular changes of bioturbation intensity and maximum penetrating depth from various settings suggest that local energy levels, especially frequency of storms could have controlled the development of Thalassinoides, while their burrow sizes were generally confined by population densities. The Thalassinoides facies could have been constructed by unknown crustaceans, which generally conducted a deposit-feeding strategy. The return of widespread TVTFs in the tropical oceans of South China during the late Silurian could reflect a restored primary productivity, an elevated oxygen level, and a final recovery of benthic ecosystem to pre-extinction level after the Late Ordovician mass extinction. TVTFs could have remarkably shaped the late Silurian benthic environment in view of their high abundance, large burrow sizes, nature of deep tiered burrow systems and a deposit-feeding strategy.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"33 6","pages":"Pages 1545-1563"},"PeriodicalIF":1.7,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140045235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

A new fulgoroidian insect (Hemiptera: Surijokocixiidae) from the Middle Triassic Tongchuan Formation of northwestern China 中国西北部中三叠世铜川地层出土的一种新的萤火虫（半翅目：Surijokocixiidae

IF 1.7 3区地球科学 Q2 PALEONTOLOGY

Palaeoworld

Pub Date : 2024-02-29 DOI: 10.1016/j.palwor.2024.02.001

Sinofulgoridium suni Zhang, Szwedo and Zhang, n. gen. n. sp., is established based on a complete tegmen from the Middle Triassic Tongchuan Formation in Shaanxi, China, and is assigned to the family Surijokocixiidae of Fulgoromorpha, Hemiptera. A key of all the known species of Surijokocixiidae is provided for the first time.

Zhang, Szwedo and Zhang, n. gen. n. sp., 基于中国陕西中三叠世铜川地层中的一个完整的蜕膜建立，并被归入半翅目(Fulgoromorpha, Hemiptera)Surijokocixiidae科。首次提供了Surijokocixiidae科所有已知物种的检索表。

引用次数: 0

No place for Pliocene tourists with Ockham’s razor in the pocket: Comment on Crespo et al. (2023) 口袋里装着奥卡姆剃刀的上新世游客无处可去：对克雷斯波等人（2023）的评论

IF 1.7 3区地球科学 Q2 PALEONTOLOGY

Palaeoworld

Pub Date : 2024-02-29 DOI: 10.1016/j.palwor.2024.02.002

Crespo et al. (2023) have recently described a new genus and species called Europotamogale melkarti, purportedly an afrosoricid ‘tourist genus’ coming from central Africa to Spain during the Pliocene. The occurrence of this mysterious animal has been justified by means of a migration of thousands of kilometers leaving no other fossil evidence all along such an incredible journey. According to our analyses, this ‘tourist genus’ is surrounded by many inconsistent facts, which lead us to the conclusion that Europotamogale should not have been erected as a new taxon because its holotype (and only element yet known) belongs to a very different animal. We alternatively propose that this fossil is indeed a fragment of a tooth of a water-mole of the genus Archaeodesmana, which is a much more parsimonious hypothesis.

Crespo 等人（2023 年）最近描述了一种名为 Europotamogale melkarti 的新属和新种，据称这是一种在上新世期间从非洲中部来到西班牙的 "旅游属 "动物。这种神秘动物的出现是通过数千公里的迁徙来证明的，在这段不可思议的旅程中没有留下任何其他化石证据。根据我们的分析，这个 "旅游属 "被许多不一致的事实所包围，这些事实使我们得出结论：Europotamogale 不应该被立为一个新的类群，因为它的主模式（也是目前已知的唯一元素）属于一种非常不同的动物。我们还提出了另一种假设，即该化石确实是 Archaeodesmana 属水鼹鼠的牙齿碎片，这是一种更为合理的假设。

引用次数: 0

首页上一页

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

Palaeoworld

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.

﹀