Palaeoworld最新文献_第4页

A new Archipsocidae (Psocodea: Psocomorpha) from the middle Miocene Zhangpu amber, China 中国中新世漳浦琥珀中发现的一种新的 Archipsocidae (Psocodea: Psocomorpha)

IF 1.7 3区地球科学

Palaeoworld Pub Date : 2025-01-22 DOI: 10.1016/j.palwor.2025.200923

Corentin Jouault , Yu-Hui Zhuang

引用次数: 0

Palynofloras across the Triassic–Jurassic boundary on Qinghai-Tibetan Plateau, Southwest China 青藏高原三叠系—侏罗系界线上的孢粉植物

IF 1.7 3区地球科学

Palaeoworld Pub Date : 2025-01-08 DOI: 10.1016/j.palwor.2025.200910

Jia-Hao Li , Jun-Gang Peng , Sam M. Slater , Vivi Vajda

引用次数: 0

A new Early Cretaceous ‘megapodagrionid’ genus (Zygoptera: Coenagriomorpha) from the Jinju Formation of the Republic of Korea 来自大韩民国晋州地层的一个新的早白垩世 "megapodagrionid "属（Zygoptera: Coenagriomorpha)

IF 1.7 3区地球科学

Palaeoworld Pub Date : 2025-01-06 DOI: 10.1016/j.palwor.2025.200908

André Nel , Gi-Soo Nam , Corentin Jouault

引用次数: 0

The identification of ‘feather-like’ fossils in the Palaeozoic: Algae, hydroids, or graptolites? 古生代“羽毛状”化石的鉴定：藻类、水螅体还是笔石？

IF 1.7 3区地球科学

Palaeoworld Pub Date : 2025-01-06 DOI: 10.1016/j.palwor.2025.200909

Jörg Maletz , Xue-Jian Zhu , Yuan-Dong Zhang , Juan Carlos Gutiérrez-Marco

{"title":"The identification of ‘feather-like’ fossils in the Palaeozoic: Algae, hydroids, or graptolites?","authors":"Jörg Maletz , Xue-Jian Zhu , Yuan-Dong Zhang , Juan Carlos Gutiérrez-Marco","doi":"10.1016/j.palwor.2025.200909","DOIUrl":"10.1016/j.palwor.2025.200909","url":null,"abstract":"<div><div>‘Feather-like’ fossils, showing the construction from a main stem and bearing lateral unbranched stipes, thus reminding of the construction of a bird’s feather, are common in the Palaeozoic fossil record. A review of these ‘feather-like’ fossils, including new specimens from the late Cambrian (Furongian) Guole Biota of Guangxi, South China, the Ordovician Louredo Formation of Portugal, and the Ordovician Castillejo and Barriga Shale formations of Spain, shows that this particular construction can be found in at least three different groups of organisms: Graptolithina (Hemichordata, Pterobranchia), Hydrozoa (Cnidaria), and macroalgae (Rhodophyta, Phaedophyta, Chlorophyta). The Graptolithina can be differentiated from the other groups by the development of the colonial housing construction. Their tubarium is formed through a glandular secretion of fusellar full or half rings, a highly characteristic feature, forming the interconnected thecal tubes for the zooids. The colonial constructions of the Hydrozoa are based on a dermal development, the periderm, and not formed as a regular glandular secretion from a zooid as in the Graptolithina, thus showing an undifferentiated organic wall. Algae do not have any colonial development in the form of separate modules and show smooth outlines. They also lack the more durable recalcitrant outer coating or housing constructions of Hydrozoa and Graptolithina and are more difficult to preserve in the fossil record.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 4","pages":"Article 200909"},"PeriodicalIF":1.7,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143867923","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

Calcimicrobe-stromatoporoid bioherms from the upper Darriwilian of the Moyero River, Siberia: Implications for reef development during the Great Ordovician Biodiversification Event 西伯利亚莫耶罗河达里维利期上层的钙微囊-叠层生物膜：奥陶纪生物多样性大事件期间珊瑚礁发展的影响

IF 1.7 3区地球科学

Palaeoworld Pub Date : 2024-12-24 DOI: 10.1016/j.palwor.2024.200907

Juwan Jeon , Nikita Lykov , Andrei Dronov , Yuliana Rostovtseva , Ursula Toom , Qi-Jian Li

{"title":"Calcimicrobe-stromatoporoid bioherms from the upper Darriwilian of the Moyero River, Siberia: Implications for reef development during the Great Ordovician Biodiversification Event","authors":"Juwan Jeon , Nikita Lykov , Andrei Dronov , Yuliana Rostovtseva , Ursula Toom , Qi-Jian Li","doi":"10.1016/j.palwor.2024.200907","DOIUrl":"10.1016/j.palwor.2024.200907","url":null,"abstract":"<div><div>Stromatoporoids have played a role in reef construction globally since the late Middle Ordovician. The diachronous and patchy distribution of stromatoporoids has limited our understanding of their diversification and palaeoecological involvement in early reef ecosystems during the Ordovician. This study re-examines calcimicrobe-stromatoporoid bioherms from the upper Darriwilian Moyero Formation, exposed along the Moyero River in Siberia. The bioherm is dominated by calcimicrobes and stromatolitic fabric that intermittently alternate with stromatoporoid sponges. Unlike other contemporaneous reef structures from peri-Gondwana and Laurentia, the stromatoporoids in the Moyero River locality are accessory components with a subordinate role in reef construction, represented by a single stromatoporoid species, <em>Cystostroma insuetum</em>. This difference of stromatoporoid occurrence from other Middle Ordovician examples is interpreted to reflect the progressive absorption of stromatoporoids into reef communities, contrasting with their more abrupt appearances in contemporary reefs in other regions of peri-Gondwana and Laurentia. This study highlights the importance of recognizing regional variability in reef development and emphasizes the role of stromatoporoids in the transition from microbial- to metazoan-dominated reef ecosystems. The re-investigation provides new insights of palaeogeographic variations and the environmental conditions that favoured the proliferation of stromatoporoids during the Middle Ordovician.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 4","pages":"Article 200907"},"PeriodicalIF":1.7,"publicationDate":"2024-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143868006","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

Devonian Lingulichnus and in situ lingulids: Taphonomy and paleoenvironments of preservation 泥盆纪舌鸟与原位舌鸟：地形学与古保存环境

IF 1.7 3区地球科学

Palaeoworld Pub Date : 2024-12-17 DOI: 10.1016/j.palwor.2024.200906

Rodrigo Scalise Horodyski , Renata Guimarães Netto , Daniel Sedorko

{"title":"Devonian Lingulichnus and in situ lingulids: Taphonomy and paleoenvironments of preservation","authors":"Rodrigo Scalise Horodyski , Renata Guimarães Netto , Daniel Sedorko","doi":"10.1016/j.palwor.2024.200906","DOIUrl":"10.1016/j.palwor.2024.200906","url":null,"abstract":"<div><div>Lingulids are significant infaunal elements of Lower to Middle Devonian in the Paraná Basin, Brazil, with <em>Lingulichnus</em> traces sometimes found in association with <em>in situ</em> lingulids specimens (Lingulida, Brachiopoda). These trace fossils are typically confined to offshore and transitional offshore-to-lower shoreface environments. This study investigates the relationship between <em>Lingulichnus</em> and <em>in situ</em> lingulids, explores their depositional and paleobiological implications. Four taphonomic modes were identified: (i) autochthonous — <em>in situ</em>, isolated lingulids normally associated with <em>Lingulichnus verticalis</em> or <em>L</em>. <em>inclinatus</em>; (ii) allochthonous — lingulids with reworking evidence (e.g., disarticulated or fragmented shells); (iii) autochthonous sub-primary position — <em>in situ</em> lingulids associated to <em>Lingulichnus hamatus</em>; (iv) temporary sub-primary position — <em>in situ</em> lingulids, isolated or associated to <em>L</em>. <em>hamatus</em> or <em>L</em>. <em>verticalis</em>. Except for the former, these taphonomic modes present high paleoecological resolution, and therefore, paleobiological implications. The <em>in situ</em> lingulids, with small size (≤ 1 cm), occur associated with <em>Lingulichnus</em>, suggesting fast burial under high sedimentation rates, and are concentrated in initial transgressive systems tracts in the study area. In this way, isolated <em>in situ</em> lingulids or associated with <em>Lingulichnus</em> can be a good indicator of high sedimentation rates, and demonstrate the preferential preservation of small organism unable to escape from the fast burial.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 4","pages":"Article 200906"},"PeriodicalIF":1.7,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143642670","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 second progonocimicid (Hemiptera: Coleorrhyncha) from the Middle Cretaceous Kachin amber of Myanmar 缅甸克钦琥珀中发现的第二种前杀虫（半翅目：Coleorrhyncha）

IF 1.7 3区地球科学

Palaeoworld Pub Date : 2024-12-12 DOI: 10.1016/j.palwor.2024.200904

Yi-Jun You , Tian Jiang , Xin-Er Guan , Beata Bieszczad , Jacek Szwedo

引用次数: 0

Annual growth bands in the late Carboniferous reef-building colonial rugose coral Ivanovia and their environmental significance 晚石炭世造礁殖民地斑珊瑚Ivanovia的年生长带及其环境意义

IF 1.7 3区地球科学

Palaeoworld Pub Date : 2024-12-12 DOI: 10.1016/j.palwor.2024.200905

Yong-Li Zhang , Wen-Tao Huang , En-Pu Gong , Guan-Ming Lai , Mark A. Wilson , Jun-Jie Wang , Ning-Feng Du , De-Peng Li

{"title":"Annual growth bands in the late Carboniferous reef-building colonial rugose coral Ivanovia and their environmental significance","authors":"Yong-Li Zhang , Wen-Tao Huang , En-Pu Gong , Guan-Ming Lai , Mark A. Wilson , Jun-Jie Wang , Ning-Feng Du , De-Peng Li","doi":"10.1016/j.palwor.2024.200905","DOIUrl":"10.1016/j.palwor.2024.200905","url":null,"abstract":"<div><div>Annual growth bands featuring with high- and low-density bands of massive reef-building corals are considered to be physiological response to seasonal changes in environment and have been widely used as environmental and climatic proxies. Here, we conduct paleontological and geochemical analysis on the late Carboniferous massive coral (<em>Ivanovia</em>) with distinct density bands from Houchang area, South China. Four <em>Ivanovia</em> species including <em>Ivanovia</em> cf. <em>manchurica</em>, <em>I</em>. <em>podolskiensis</em>, <em>I</em>. <em>guizhouensis</em>, <em>Ivanovia</em> sp. have been found in the study area. Aluminum (Al) content and oxygen isotope (δ<sup>18</sup>O) of the annual growth bands in <em>Ivanovia</em> sp. suggest that high-density bands are probably formed during hot and rainy seasons with high temperature and more terrestrial input. In contrast, low-density bands are generally constructed during cooler periods with optimal environmental conditions, consistent with the modern tropical reef-building coral density bands. Spectral analysis of the Al and δ<sup>18</sup>O series from the <em>Ivanovia</em> sp. reveals significant 2–7 yr cycles close to the cyclicality (2–7 yr) of modern El Niño–Southern Oscillation (ENSO). This study highlights the coral annual growth bands and ENSO-like variability during the late Carboniferous.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 4","pages":"Article 200905"},"PeriodicalIF":1.7,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143642671","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

Larger benthic foraminifera and strontium isotope stratigraphy of the Palaeocene limestones in the Guru area, south Xizang (Tibet): an attempt to build a high-resolution biozonation for the eastern Neo-Tethys 西藏南部古鲁地区古新世大底栖有孔虫和锶同位素地层：建立新特提斯东部高分辨率生物分带的尝试

IF 1.7 3区地球科学

Palaeoworld Pub Date : 2024-12-12 DOI: 10.1016/j.palwor.2024.200903

Xue-Song Ma , Qing-Hai Zhang , Lin Ding , Qian Zhang

{"title":"Larger benthic foraminifera and strontium isotope stratigraphy of the Palaeocene limestones in the Guru area, south Xizang (Tibet): an attempt to build a high-resolution biozonation for the eastern Neo-Tethys","authors":"Xue-Song Ma , Qing-Hai Zhang , Lin Ding , Qian Zhang","doi":"10.1016/j.palwor.2024.200903","DOIUrl":"10.1016/j.palwor.2024.200903","url":null,"abstract":"<div><div>Larger benthic foraminifera (LBF) are one of the most important microfossil groups for Palaeogene biostratigraphy, particularly for shallow-marine carbonate deposits. During the Palaeocene, LBF thrived throughout the Neo-Tethyan Ocean, especially in the eastern Neo-Tethys. However, previous studies on Palaeocene LBF biostratigraphy in this area are relatively poor. This paper presents a detailed stratigraphic study of LBF and strontium isotope from the Palaeocene limestones at Guru, south Tibet. About 68 species of 29 genera were identified, among which 19 species are reported for the first time from south Tibet. Following an Oppel zone approach and adopting some key index fossils that are widely accepted in the Neo-Tethys, four Shallow Benthic Zones (SBZ) ranging from SBZ 2 to SBZ 5 were recognised. Based on detailed LBF changes in each SBZ, we tentatively divide SBZ 2 (uppermost Danian–upper Selandian), SBZ 3 (upper Selandian–middle Thanetian), and SBZ 5 (upper Thanetian) into 3, 3, and 2 sub-biozones, respectively. The <sup>87</sup>Sr/<sup>86</sup>Sr ratios from 42 bulk carbonate samples were measured to construct an independent age framework for the Palaeocene limestones. Integration of LBF and <sup>87</sup>Sr/<sup>86</sup>Sr data yielded a high-resolution stratigraphy and provided absolute age controls for each SBZ. Ages of SBZ 2, SBZ 3, SBZ 4, and SBZ 5 were estimated to be ∼62–60 Ma, ∼60–57.4 Ma, ∼57.4–57 Ma, and ∼57–56 Ma, respectively. Our newly built Palaeocene LBF biostratigraphy at Guru needs further testing from other areas in the Neo-Tethyan realm, and is open for refinement and correction in the future.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 4","pages":"Article 200903"},"PeriodicalIF":1.7,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143684501","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

First record of Brachyoxylon wood from Upper Jurassic of Sichuan Basin, Southwest China and its paleoenvironmental significance 四川盆地上侏罗统短梭梭木的首次记录及其古环境意义

IF 1.7 3区地球科学

Palaeoworld Pub Date : 2024-12-04 DOI: 10.1016/j.palwor.2024.11.007

Ao-Wei Xie , Yong-Dong Wang , Ning Tian , Zi-Kun Jiang , Xiao-Ping Xie , Shu-Na Xi , Shi-Hui Bai , Dieter Uhl

{"title":"First record of Brachyoxylon wood from Upper Jurassic of Sichuan Basin, Southwest China and its paleoenvironmental significance","authors":"Ao-Wei Xie , Yong-Dong Wang , Ning Tian , Zi-Kun Jiang , Xiao-Ping Xie , Shu-Na Xi , Shi-Hui Bai , Dieter Uhl","doi":"10.1016/j.palwor.2024.11.007","DOIUrl":"10.1016/j.palwor.2024.11.007","url":null,"abstract":"<div><div>Diverse and abundant foliage fossils are well known and well documented from the Upper Triassic to the Lower and Middle Jurassic of the Sichuan Basin in Southwest China. Yet, the fossil record of Upper Jurassic plants in this region is sparse. Decades ago, hundreds of fossil wood specimens were unearthed from the Upper Jurassic in the central part of the Sichuan Basin, offering important insights into the region’s past terrestrial ecosystems and paleoclimate. Despite their significance, systematic studies of these fossils have been limited. Here, we describe the anatomy of a fossil wood specimen from the Upper Jurassic Penglaizhen Formation in Shehong City, Sichuan Province. The specimen displays key <em>Brachyoxylon</em> features, including mixed radial tracheid pitting in conjunction with araucarioid cross-field pitting. This is the first record of the coniferous wood <em>Brachyoxylon</em> in the central Sichuan Basin. Paleoclimatic evidence from associated leaves, pollen, and sediments, suggests that these trees thrived under generally warm and semi-arid to arid conditions, likely in riparian and lacustrine environments with local water abundance, as indicated by the growth rings with narrow latewood bands.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 4","pages":"Article 100899"},"PeriodicalIF":1.7,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143684503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0