Review of Palaeobotany and Palynology最新文献_第5页

Palynotaxonomy of species and genera of the Cyanocladus and Trichocladus clades (Lamiaceae: Hyptidinae) 青枝和毛枝的种属分类（紫枝科：棘枝科）

IF 1.7 3区地球科学

Review of Palaeobotany and Palynology Pub Date : 2026-01-01 Epub Date: 2025-08-17 DOI: 10.1016/j.revpalbo.2025.105428

Renata Jacomo Paixão de Carvalho , Raymond Mervey Harley , José Floriano Barêas Pastore , Cláudia Barbieri Ferreira Mendonça , Vania Gonçalves-Esteves

{"title":"Palynotaxonomy of species and genera of the Cyanocladus and Trichocladus clades (Lamiaceae: Hyptidinae)","authors":"Renata Jacomo Paixão de Carvalho , Raymond Mervey Harley , José Floriano Barêas Pastore , Cláudia Barbieri Ferreira Mendonça , Vania Gonçalves-Esteves","doi":"10.1016/j.revpalbo.2025.105428","DOIUrl":"10.1016/j.revpalbo.2025.105428","url":null,"abstract":"<div><div>This study analyzed the pollen morphology of 22 taxa of the <em>Cyanocladus</em> and <em>Trichocladus</em> clades. The aim was to describe and characterize pollen grains and assess whether pollen morphology corroborates the recent taxonomy of the group. Only genera occurring in Brazil were studied, including <em>Cyanocephalus</em> (Pohl ex Benth.) Harley & J.F.B.Pastore (7 spp.), the endemic genus <em>Eplingiella</em> Harley & J.F.B.Pastore (3 spp.), <em>Marsypianthes</em> Mart. ex Benth. (4 spp.), <em>Martianthus</em> Harley & J.F.B.Pastore (3 spp.), and <em>Medusantha</em> Harley & J.F.B.Pastore (5 spp.). Acetolyzed pollen grains were measured, described, and photomicrographed. Non-acetolyzed pollen grains were examined by scanning electron microscopy. All taxa analyzed have pollen grains shed in monads, medium to large in size, isopolar, (4)-6-(8–10)colpate, ranging from suboblate to prolate, with a small to very small polar area. The colpi are long to very long, broad, with ornamented membranes and an acute apex, and lack distinct margins. An operculum was observed in all species of <em>Cyanocephalus</em>. The sexine is bireticulated in all other species and genera. The results showed that the pollen morphology of the studied genera was informative in classifying taxa and distinguishing genera, demonstrating some notable parallels with current taxonomic opinion. In principal component analysis and hierarchical cluster analysis, morphometric characteristics approximated and grouped, respectively, species of the genera <em>Eplingiella</em> and <em>Martianthus</em>. These genera exhibited great variation in pollen shape.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"344 ","pages":"Article 105428"},"PeriodicalIF":1.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144885758","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 Cyathocarpus (Marattiales) in Gondwana: A new species from the Permian of Patagonia, Argentina 冈瓦纳地区Cyathocarpus （Marattiales）的首次记录：阿根廷巴塔哥尼亚二叠纪的一新种

IF 1.7 3区地球科学

Review of Palaeobotany and Palynology Pub Date : 2026-01-01 Epub Date: 2025-09-11 DOI: 10.1016/j.revpalbo.2025.105447

Gonzalo Rodriguez Rizk, Bárbara Cariglino

{"title":"First record of Cyathocarpus (Marattiales) in Gondwana: A new species from the Permian of Patagonia, Argentina","authors":"Gonzalo Rodriguez Rizk, Bárbara Cariglino","doi":"10.1016/j.revpalbo.2025.105447","DOIUrl":"10.1016/j.revpalbo.2025.105447","url":null,"abstract":"<div><div>Marattialean ferns were key components of Paleozoic wetland ecosystems, yet their biogeographic history in Gondwana remains poorly resolved. While <em>Cyathocarpus</em> is well documented from Euramerica and Cathaysia, no species had been recognized in Gondwana—until now. We describe <em>Cyathocarpus polinensis</em> sp. nov. from the Guadalupian La Golondrina Formation of Patagonia, Argentina, representing the first Gondwanan record of the genus. The species exhibits a distinctive arrangement of synangial rows that do not contact the midvein or pinnule margins and are consistently absent from the apical and basal regions of the pinnules. The midvein is conspicuous, straight, and divides fanwise near the apex; lateral veins bifurcate once, close to the midvein. This discovery extends the paleogeographic range of <em>Cyathocarpus</em> and supports a dispersal scenario from Euramerica into southern Gondwana during the Cisuralian. These findings call for a critical reassessment of comparable Gondwanan taxa and underscore the role of southwestern Gondwana as a refugium and center of marattialean diversification during postglacial climatic recovery.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"344 ","pages":"Article 105447"},"PeriodicalIF":1.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145095656","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

Monitoring seasonal pollen deposition in an arid environment using Tauber traps: ecological and aerobiological insights from Kashan, central Iran 利用陶伯捕集器监测干旱环境中的季节性花粉沉积：来自伊朗中部卡尚的生态和有氧生物学见解

IF 1.7 3区地球科学

Review of Palaeobotany and Palynology Pub Date : 2026-01-01 Epub Date: 2025-10-22 DOI: 10.1016/j.revpalbo.2025.105462

Elham Mahlooji , Morteza Djamali , Hossein Akhani , Emmanuel Gandouin , Hossein Batooli , Marzieh Heidarzadeh Arani , Mohammad-Reza Mozdianfard

{"title":"Monitoring seasonal pollen deposition in an arid environment using Tauber traps: ecological and aerobiological insights from Kashan, central Iran","authors":"Elham Mahlooji , Morteza Djamali , Hossein Akhani , Emmanuel Gandouin , Hossein Batooli , Marzieh Heidarzadeh Arani , Mohammad-Reza Mozdianfard","doi":"10.1016/j.revpalbo.2025.105462","DOIUrl":"10.1016/j.revpalbo.2025.105462","url":null,"abstract":"<div><div>Monitoring atmospheric pollen deposition with Tauber traps has long supported palaeoecological studies in temperate regions of Europe, but their application in arid regions and their potential in aerobiology remain underexplored. We installed Tauber traps at three sites in Kashan and neighboring towns on the western margin of the central Iranian desert, with weekly and monthly (4-weekly) collections over one year, to assess their efficiency in capturing seasonal airborne pollen. The traps reliably reflected both regional desert-steppe vegetation and urban or peri-urban plantations. Comparison with clinical allergy data shows that Chenopodiaceae (<em>s. str.</em>) and <em>Artemisia</em>, together with <em>Morus alba</em>, <em>Olea europaea</em>, and <em>Cupressus</em>, are the major airborne allergens in Kashan. Our findings stress that the allergenic importance of Chenopodiaceae and <em>Artemisia</em>—dominant in summer and autumn pollen rains—has been underestimated in regional aerobiological surveys and clinical testing, which typically rely on a narrow set of non-native extracts. We propose that Tauber traps, as a simple and inexpensive tool, could complement aerobiological monitoring in remote drylands and inform both ecological and medical studies.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"344 ","pages":"Article 105462"},"PeriodicalIF":1.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145362234","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 fossil evidence from southwestern China sheds light on the formation of modern distribution of Toddalia (Rutaceae) 中国西南地区新发现的化石证据揭示了龙牙亚（龙牙科）现代分布的形成

IF 1.7 3区地球科学

Review of Palaeobotany and Palynology Pub Date : 2026-01-01 Epub Date: 2025-10-16 DOI: 10.1016/j.revpalbo.2025.105460

Jiang-Min Chen , Xue-Ping Ji , Chun-Xia Zhang , Yu Ji , Jun Yang , Huan-Chong Wang , Yun-Heng Ji , Yong-Jiang Huang

{"title":"New fossil evidence from southwestern China sheds light on the formation of modern distribution of Toddalia (Rutaceae)","authors":"Jiang-Min Chen , Xue-Ping Ji , Chun-Xia Zhang , Yu Ji , Jun Yang , Huan-Chong Wang , Yun-Heng Ji , Yong-Jiang Huang","doi":"10.1016/j.revpalbo.2025.105460","DOIUrl":"10.1016/j.revpalbo.2025.105460","url":null,"abstract":"<div><div><em>Toddalia</em> Juss. is a genus in Rutaceae, with a modern geographical range that extends from West and East Africa to South, East and Southeast Asia. The genus has a good fossil record in Europe, where it has become extinct, but is poorly represented in the geological record of Asia, where it flourishes today. This study reports the second fossil record of <em>Toddalia</em> in Asia, based on three-dimensional seed remains recovered from the latest Miocene Baoshan Basin in western Yunnan, southwestern China. The fossil seeds are characterized by their reniform shape, smooth surface, large hilar scar, unique raphe excrescence and layered seed coat. Following morphological and anatomical comparisons with both extant and other fossil species, the fossil seeds were assigned to <em>T. nanlinensis</em>, a species first reported from the Early-Middle Miocene Longchuan Basin in southwestern Yunnan. This new fossil finding suggests that the Baoshan Basin probably had forest vegetation in a warm, humid climate at some time during the latest Miocene. This is in line with previous suggestions based on other fossils, such as hominoids (<em>Lufengpithecus</em> sp.) and other mammals, found from the same sedimentary layer of the basin. Together with the previous record, our fossil discovery mirrors continuous presence of <em>Toddalia</em> in southwestern China since at least the Early-Middle Miocene. This provides insight into how the modern distribution range of the genus formed in this region and even in Asia.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"344 ","pages":"Article 105460"},"PeriodicalIF":1.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145362236","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

Pollen morphology of Pseudanthus (Picrodendraceae) 拟蕨科植物花粉形态研究

IF 1.7 3区地球科学

Review of Palaeobotany and Palynology Pub Date : 2026-01-01 Epub Date: 2025-08-13 DOI: 10.1016/j.revpalbo.2025.105426

Angelika Till , Silvia Ulrich , David J. Cantrill , Friðgeir Grímsson

{"title":"Pollen morphology of Pseudanthus (Picrodendraceae)","authors":"Angelika Till , Silvia Ulrich , David J. Cantrill , Friðgeir Grímsson","doi":"10.1016/j.revpalbo.2025.105426","DOIUrl":"10.1016/j.revpalbo.2025.105426","url":null,"abstract":"<div><div>This is the first comprehensive investigation on the pollen morphology of <em>Pseudanthus</em>, a small genus within the Picrodendraceae, comprising nine species all endemic to Australia. This study presents the pollen morphology of eight out of the nine currently accepted <em>Pseudanthus</em> species using light and scanning electron microscopy. Pollen from five of the species (incl. subspecies) are described here for the first time. Pollen from different <em>Pseudanthus</em> species appears alike, sharing many overlapping features, including sculpture patterns observed with both LM and SEM. However, detailed examination reveals species-specific differences such as size and aperture number, that aid in discriminating pollen of the individual species. In general, Picrodendraceae pollen is mostly isodiametric to oblate, spherical to spheroidal in shape, and either exhibits a pantoporate or stephanoporate aperture configuration, as well as echinate sculpture. Although, <em>Pseudanthus</em> pollen shares these morphological features, being isodiametric to slightly oblate, pantoporate, and echinate, the pollen of this genus can be differentiated from other closely related Picrodendraceae (<em>Kairothamnus</em>, <em>Micrantheum</em>, <em>Neoroepera</em>, <em>Scagea</em>, and <em>Stachystemon</em>) based on set of traits observed with combined LM and SEM.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"344 ","pages":"Article 105426"},"PeriodicalIF":1.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144867230","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

Late Holocene vegetation dynamics and Indian Summer Monsoon evolution from the Core Monsoon Zone, India 印度核心季风带的晚全新世植被动态与印度夏季风演化

IF 1.7 3区地球科学

Review of Palaeobotany and Palynology Pub Date : 2026-01-01 Epub Date: 2025-10-06 DOI: 10.1016/j.revpalbo.2025.105455

Nagendra Prasad , Mohammad Firoze Quamar , Paulramasamy Morthekai , Maneesha Muraleedharan ET , Pooja Tiwari , Biswajeet Thakur , Anupam Sharma

{"title":"Late Holocene vegetation dynamics and Indian Summer Monsoon evolution from the Core Monsoon Zone, India","authors":"Nagendra Prasad , Mohammad Firoze Quamar , Paulramasamy Morthekai , Maneesha Muraleedharan ET , Pooja Tiwari , Biswajeet Thakur , Anupam Sharma","doi":"10.1016/j.revpalbo.2025.105455","DOIUrl":"10.1016/j.revpalbo.2025.105455","url":null,"abstract":"<div><div>Understanding the vegetation response to the Late Holocene Indian Summer Monsoon (ISM) variability from the Core Monsoon Zone (CMZ), India, during the Late Holocene, is the principal aim of the present study. Pollen analysis of a lacustrine sediment core from the Korba District of Chhattisgarh State (CMZ) demonstrated that between ca. 3560 and 2860 cal yr BP, savannah vegetation dominated the landscape in a cool-dry climate, suggesting reduced ISM rainfall. A shift in the vegetation from savannah to wooded savannah during ca. 2860 to 1960 cal yr BP was observed in a moderately strengthened ISM rainfall regime. From ca. 1960 to 890 cal yr BP, the region experienced a transformation from the wooded savannah vegetation to mixed tropical deciduous forests in a warm-humid climate, reflecting a comparatively increased ISM rainfall. From ca. 890 to 225 cal yr BP (CE1060–1725), dense mixed tropical deciduous forests came into being in a warm and relatively more humid climate, indicating intensified ISM rainfall. The initial part (CE 1060–1400) of this phase corresponds with the global Medieval Climate Anomaly (MCA; CE 700–1400). Agricultural practices and other human activities were suggested, based on the presence of Cerealia pollen, and other cultural pollen taxa, respectively.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"344 ","pages":"Article 105455"},"PeriodicalIF":1.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145320028","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

Taphonomic Completeness: A new metric for assessing fossil leaf preservation using the Spitsbergen Cenozoic fossil flora 埋藏完整性：利用斯匹次卑尔根新生代化石区系评估化石叶片保存的新指标

IF 1.7 3区地球科学

Review of Palaeobotany and Palynology Pub Date : 2026-01-01 Epub Date: 2025-10-30 DOI: 10.1016/j.revpalbo.2025.105464

Harrison O'Rourke , Eimear Nic Lughadha , Karen L. Bacon

{"title":"Taphonomic Completeness: A new metric for assessing fossil leaf preservation using the Spitsbergen Cenozoic fossil flora","authors":"Harrison O'Rourke , Eimear Nic Lughadha , Karen L. Bacon","doi":"10.1016/j.revpalbo.2025.105464","DOIUrl":"10.1016/j.revpalbo.2025.105464","url":null,"abstract":"<div><div>Leaves are the most common type of plant macrofossil found in the plant fossil record; however, comparing leaf preservation quality across plant groups, sites, and time periods is challenging. A new metric was devised that allowed the quality of leaf preservation to be quantitatively measured for leaf fossils preserved from different localities, timepoints and plant life forms, based on a suite of leaf traits. The metric produces a score between 6 (high quality preservation) and 0 (low quality preservation). The leaf traits visible in the Spitsbergen Cenozoic fossil flora were studied to analyse the effect of leaf traits on preservation potential. Non-metric multidimensional scaling indicated that plant life form strongly influenced the leaf traits preserved within the Spitsbergen fossil flora, while stratigraphy had a much weaker effect, indicating that depositional environment and climate influenced preservation less than plant life form. The ‘Taphonomic Completeness’ metric indicated that the gymnosperms and ferns had a significantly higher leaf preservation quality than the woody angiosperms and the herbaceous angiosperms, with the latter group having the lowest quality preservation overall. This result suggests that there may be a bias against the leaves of herbaceous species being preserved in the fossil record, which has implications for interpreting the plant fossil record and how paleo ecosystems functioned. Additionally, the development of this quantitative ‘Taphonomic Completeness’ metric provides a standardised approach that can be widely applied to fossil leaf assemblages from other sites and time periods, allowing robust, large-scale comparisons of preservation quality across fossil floras.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"344 ","pages":"Article 105464"},"PeriodicalIF":1.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145465568","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

An illustrated key for the identification of pollen from Rajaji National Park, India 印度拉贾吉国家公园花粉鉴定的图解钥匙

IF 1.7 3区地球科学

Review of Palaeobotany and Palynology Pub Date : 2026-01-01 Epub Date: 2025-08-22 DOI: 10.1016/j.revpalbo.2025.105438

Ruchita Rawat , Prabhawati Tiwari , Shivani Negi , Dinesh Singh Rawat

{"title":"An illustrated key for the identification of pollen from Rajaji National Park, India","authors":"Ruchita Rawat , Prabhawati Tiwari , Shivani Negi , Dinesh Singh Rawat","doi":"10.1016/j.revpalbo.2025.105438","DOIUrl":"10.1016/j.revpalbo.2025.105438","url":null,"abstract":"<div><div>Accurate identification of pollen grains is fundamental to diverse fields such as palaeobotany, melissopalynology, aerobiology, and forensic science. This study presents a comprehensive illustrated key for the identification of pollen from Rajaji National Park (RNP). The park is situated in the Shivalik foothills of the Garhwal Himalaya, a region renowned for its rich floral diversity and significant ecological value. Extensive field surveys were conducted from 2021 to 2024, and polliniferous material from 302 plant species, representing 229 genera and 67 families, was collected. Pollen grains were prepared following the standard acetolysis protocol and subsequently examined using both light microscopy (LM) and scanning electron microscopy (SEM). Based on dispersal units and aperture type, the taxa were classified into 24 distinct pollen classes. An illustrated pollen identification key was developed, comprising a general key to differentiate pollen into distinct classes, followed by separate keys for each class. This key serves as a foundational reference for palynological research in Himalayan foothills. The work addresses a critical gap in regional palynological studies and contributes to strengthening pollen databases in India.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"344 ","pages":"Article 105438"},"PeriodicalIF":1.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144895461","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

Chemosystematic studies of Devonian coal-forming plants: Barzas Orestovia-like plants compressions 泥盆纪造煤植物的化学系统研究：Barzas orestovia样植物压缩

IF 1.7 3区地球科学

Review of Palaeobotany and Palynology Pub Date : 2026-01-01 Epub Date: 2025-09-23 DOI: 10.1016/j.revpalbo.2025.105452

Lyudmila Kocheva , Anatoly Karmanov , Olga Telnova , Alexey Gomankov , Vladimir Lutoev

{"title":"Chemosystematic studies of Devonian coal-forming plants: Barzas Orestovia-like plants compressions","authors":"Lyudmila Kocheva , Anatoly Karmanov , Olga Telnova , Alexey Gomankov , Vladimir Lutoev","doi":"10.1016/j.revpalbo.2025.105452","DOIUrl":"10.1016/j.revpalbo.2025.105452","url":null,"abstract":"<div><div><em>Orestovia</em>-like plants are of great scientific and practical interest for various fields of natural science, forming the most ancient unique Devonian Barzas coals in the Kuznetsk Basin, Russia. However their natural affinity (higher plants or algae) remains disputable. This work studies Barzas compressions of <em>Orestovia</em>-like plants from the standpoint of chemosystematics. We proposed to use the aromatic biopolymer lignin, which is included in all higher terrestrial plants, as a marker of organic matter. To prove the presence of lignin and establish its structure, a complex of physical and chemical methods was used: FTIR and EPR spectroscopy, pyrolytic gas chromatography–mass spectrometry, scanning electron microscopy, X-ray fluorescence and X-ray phase analysis. Based on the obtained results, we found the presence of transformation products of compositionally homogeneous <em>p</em>-coumaric protolignin in the substance of plant remains. The obtained data do not exclude the validity of the hypothesis that the Devonian <em>Orestovia</em>-like plants belong to higher plants.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"344 ","pages":"Article 105452"},"PeriodicalIF":1.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145219541","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

Cupule-bearing cones of Jarudia (Doyleales) and associated leaves from the Early Cretaceous of the New Siberian Islands, Arctic Russia 俄罗斯北极地区新西伯利亚群岛早白垩世的刺叶属植物的带对偶的球果及其伴生叶

IF 1.7 3区地球科学

Review of Palaeobotany and Palynology Pub Date : 2026-01-01 Epub Date: 2025-09-20 DOI: 10.1016/j.revpalbo.2025.105451

Natalya Nosova , Peter R. Crane , Gongle Shi , Ksenia Domogatskaya

{"title":"Cupule-bearing cones of Jarudia (Doyleales) and associated leaves from the Early Cretaceous of the New Siberian Islands, Arctic Russia","authors":"Natalya Nosova , Peter R. Crane , Gongle Shi , Ksenia Domogatskaya","doi":"10.1016/j.revpalbo.2025.105451","DOIUrl":"10.1016/j.revpalbo.2025.105451","url":null,"abstract":"<div><div>A new species of cupule-bearing seed cone assigned to <em>Jarudia</em> (Doyleales) is described from the Lower Cretaceous (Aptian–Albian) Balyktakh Formation of Kotelnyi Island in the New Siberian Islands. The new species, <em>Jarudia borealis</em> sp. nov. is an elongated, cylindrical seed cone consisting of a main axis with helically arranged, densely spaced bract-cupule axis complexes, each of which terminates in a single incurved cupule. Cupule-bearing stalks are thin proximally where they are fused with a narrow, elongated bract. Above, they are free from the bract, gradually widen toward the tip and are curved adaxially relative to the main axis. Each cupule is formed by the wide flattened distal part of the cupule stalk, one median and two lateral flaps, and is quadrangular in transverse section. The flattened cupule stalk and three flaps are fused at the apex of the cupule but are free toward the base. Micro-CT scans reveal that most cupules are empty, but maceration of remaining carbonaceous material produced pieces of the cupule cuticle, as well as fragments of the nucellar cuticle and megaspore membrane. Stomata, occasionally present in the outer epidermis of the cupules, are haplocheilic, with 5–8 subsidiary cells. The megaspore membrane is two layered comprising a foot layer and branched, interconnected bacula. The cupule-bearing cones of <em>Jarudia borealis</em> sp. nov. occur closely associated with numerous remains of linear leaves described as <em>Phoenicopsis arcticus</em> sp. nov., as well as rare leaf fragments of <em>Pityophyllum</em> sp. and <em>Ginkgoites</em> sp.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"344 ","pages":"Article 105451"},"PeriodicalIF":1.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145158118","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