Review of Palaeobotany and Palynology最新文献

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Late Holocene vegetation dynamics and climate variations through pollen analysis of sediments from Lake Sülük (Çorum, Türkiye)

IF 1.7 3区地球科学 Q2 PALEONTOLOGY

Review of Palaeobotany and Palynology

Pub Date : 2025-01-04 DOI: 10.1016/j.revpalbo.2025.105280

Demet Biltekin , Kürşad Kadir Eriş , Andreas Schachner , Nurettin Yakupoğlu , Cerennaz Yakupoğlu

The sediment core from Lake Sülük provides evidence of significant vegetation and environmental changes during the late Holocene, covering the last 2170 yr BP. The period of 2170–1650 yr BP revealed the dominance of Pinus and Asteraceae-Cichorioideae, indicating cooler, drier conditions with open pine forests and herbaceous understories, particularly during the Hellenistic-Galatian and early Roman periods. During the same period, an increase in the Pollen Disturbance Index (PDI) indicates long-term local grazing or breeding activities. The pronounced increase in Pinus pollen between 1300 and 1150 yr BP suggested the expansion of pine forests, which was likely influenced by favorable climatic conditions or changes in land use. The rising levels of Artemisia and Poaceae indicate mixed pastoral and agricultural activities. Pinus dominance peaked during the Seljuk Empire. In the late Antiquity Period, other woody species, such as Alnus, Carpinus betulus, and deciduous Quercus, expanded locally, while the rise of Ranunculus species highlights their resilience to arid Mediterranean conditions. After 610 yr BP, the abundance of Pinus declined, allowing other arboreal species, particularly deciduous Quercus and Juglans, to thrive notably during the Ottoman Empire. The presence of cultivated trees, including Juglans, Vitis, and Olea europaea, confirms extensive agricultural activities during the Ottoman period, reflecting human influence on the vegetation. Mixed deciduous and coniferous forests dominated the surrounding mountains, whereas riparian zones were characterized by Populus and Salix. The interaction between natural ecosystems and human settlements is evident, with vegetation shifts driven by both climatic changes and human activities.

{"title":"Late Holocene vegetation dynamics and climate variations through pollen analysis of sediments from Lake Sülük (Çorum, Türkiye)","authors":"Demet Biltekin , Kürşad Kadir Eriş , Andreas Schachner , Nurettin Yakupoğlu , Cerennaz Yakupoğlu","doi":"10.1016/j.revpalbo.2025.105280","DOIUrl":"10.1016/j.revpalbo.2025.105280","url":null,"abstract":"<div><div>The sediment core from Lake Sülük provides evidence of significant vegetation and environmental changes during the late Holocene, covering the last 2170 yr BP. The period of 2170–1650 yr BP revealed the dominance of <em>Pinus</em> and Asteraceae-Cichorioideae, indicating cooler, drier conditions with open pine forests and herbaceous understories, particularly during the Hellenistic-Galatian and early Roman periods. During the same period, an increase in the Pollen Disturbance Index (PDI) indicates long-term local grazing or breeding activities. The pronounced increase in <em>Pinus</em> pollen between 1300 and 1150 yr BP suggested the expansion of pine forests, which was likely influenced by favorable climatic conditions or changes in land use. The rising levels of <em>Artemisia</em> and Poaceae indicate mixed pastoral and agricultural activities. <em>Pinus</em> dominance peaked during the Seljuk Empire. In the late Antiquity Period, other woody species, such as <em>Alnus</em>, <em>Carpinus betulus</em>, and deciduous <em>Quercus</em>, expanded locally, while the rise of <em>Ranunculus</em> species highlights their resilience to arid Mediterranean conditions. After 610 yr BP, the abundance of <em>Pinus</em> declined, allowing other arboreal species, particularly deciduous <em>Quercus</em> and <em>Juglans</em>, to thrive notably during the Ottoman Empire. The presence of cultivated trees, including <em>Juglans</em>, <em>Vitis</em>, and <em>Olea europaea</em>, confirms extensive agricultural activities during the Ottoman period, reflecting human influence on the vegetation. Mixed deciduous and coniferous forests dominated the surrounding mountains, whereas riparian zones were characterized by <em>Populus</em> and <em>Salix</em>. The interaction between natural ecosystems and human settlements is evident, with vegetation shifts driven by both climatic changes and human activities.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"334 ","pages":"Article 105280"},"PeriodicalIF":1.7,"publicationDate":"2025-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143157920","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

Fossil wood of Pinus from the Pliocene of western Yunnan, China and its palaeoclimatic implications

IF 1.7 3区地球科学 Q2 PALEONTOLOGY

Review of Palaeobotany and Palynology

Pub Date : 2025-01-02 DOI: 10.1016/j.revpalbo.2024.105279

Zhi-Hui Song, Zhuo-Er Wang, Rui Cao, Zhao-Shuai Wang, Huai Wang, Gui-Hua Chen, Jing-Yu Wu

The Pinus (Pinaceae), widely distributed in the Northern Hemisphere, has a substantial fossil record; however, the fossil record of subgenus Strobus is comparatively modest. In this paper, we reported a new wood fossil of Pinus longlingensis sp. nov., collected from the Upper Pliocene Mangbang Formation in Longling, western Yunnan Province, China. Comparative analyses of the anatomical features of the current specimen with both extant and fossil representatives of this genus assign it to the subgenus Strobus, section Quinquefoliae, subsection Strobus. The quantitative growth-ring analyses of Pinus longlingensis indicate that it was evergreen. Furthermore, the species predominantly grew under a stable and favorable environmental condition, with short-term seasonal climate fluctuations. This investigation augments the Cenozoic wood fossil records of western Yunnan and furnishes newanatomical evidence that helps understand the climatic and environmental changes of the Late Pliocene in this region.

{"title":"Fossil wood of Pinus from the Pliocene of western Yunnan, China and its palaeoclimatic implications","authors":"Zhi-Hui Song, Zhuo-Er Wang, Rui Cao, Zhao-Shuai Wang, Huai Wang, Gui-Hua Chen, Jing-Yu Wu","doi":"10.1016/j.revpalbo.2024.105279","DOIUrl":"10.1016/j.revpalbo.2024.105279","url":null,"abstract":"<div><div>The <em>Pinus</em> (Pinaceae), widely distributed in the Northern Hemisphere, has a substantial fossil record; however, the fossil record of subgenus <em>Strobus</em> is comparatively modest. In this paper, we reported a new wood fossil of <em>Pinus longlingensis</em> sp. nov., collected from the Upper Pliocene Mangbang Formation in Longling, western Yunnan Province, China. Comparative analyses of the anatomical features of the current specimen with both extant and fossil representatives of this genus assign it to the subgenus <em>Strobus</em>, section <em>Quinquefoliae</em>, subsection <em>Strobus</em>. The quantitative growth-ring analyses of <em>Pinus longlingensis</em> indicate that it was evergreen. Furthermore, the species predominantly grew under a stable and favorable environmental condition, with short-term seasonal climate fluctuations. This investigation augments the Cenozoic wood fossil records of western Yunnan and furnishes newanatomical evidence that helps understand the climatic and environmental changes of the Late Pliocene in this region.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"334 ","pages":"Article 105279"},"PeriodicalIF":1.7,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143157921","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 Early to Middle Devonian palynology of the Ramos x-1011 borehole from the Tarija Basin, northwestern Argentina

IF 1.7 3区地球科学 Q2 PALEONTOLOGY

Review of Palaeobotany and Palynology

Pub Date : 2025-01-02 DOI: 10.1016/j.revpalbo.2024.105278

Victoria J. García Muro , Claudia V. Rubinstein , Sonia C. Camina , Gustavo Vergani , Martín Pereira

Palynological analyses have been performed on a late Early to Middle Devonian clastic marine sedimentary succession of the Ramos x-1011 borehole, located in the southern area of the Tarija Basin, northwestern Argentina. Samples from the Icla, Huamampampa and Los Monos formations were processed. Palynomorphs from the Icla Formation were scarce and badly preserved, preventing their taxonomic classification. Samples from the Huamampampa and Los Monos formations yielded organic-walled phytoplankton and miospore assemblages of variable abundance, diversity, and preservation. Spores that suggest an Emsian age, such as Dibolisporites gaspiensis, Geminospora svalbardiae, and Grandispora protea were recovered from the Huamampampa Formation. Upwards in the borehole, the Los Monos Formation yielded spore species, such as Acinosporites acanthomammillatus, Acinosporites macrospinosus, Cymbosporites cyathus, Camarozonotriletes? concavus, Chelinospora ligurata, Cymbosporites variegatus, Geminospora lemurata, and Samarisporites cf. triangulatus, that point to an Eifelian to middle Givetian age. Among the organic-walled phytoplankton, Arkonites biluxus Cordobesia uruguayensis, Duvernaysphaera angelae, Duvernaysphaera tenuicingulata, Estiastra rhytidoa and Pterospermella pernambucensis support the age based on the terrestrial palynomorphs. The relative abundance of marine and terrestrial palynomorphs indicates a nearshore environment.

{"title":"Late Early to Middle Devonian palynology of the Ramos x-1011 borehole from the Tarija Basin, northwestern Argentina","authors":"Victoria J. García Muro , Claudia V. Rubinstein , Sonia C. Camina , Gustavo Vergani , Martín Pereira","doi":"10.1016/j.revpalbo.2024.105278","DOIUrl":"10.1016/j.revpalbo.2024.105278","url":null,"abstract":"<div><div>Palynological analyses have been performed on a late Early to Middle Devonian clastic marine sedimentary succession of the Ramos x-1011 borehole, located in the southern area of the Tarija Basin, northwestern Argentina. Samples from the Icla, Huamampampa and Los Monos formations were processed. Palynomorphs from the Icla Formation were scarce and badly preserved, preventing their taxonomic classification. Samples from the Huamampampa and Los Monos formations yielded organic-walled phytoplankton and miospore assemblages of variable abundance, diversity, and preservation. Spores that suggest an Emsian age, such as <em>Dibolisporites gaspiensis</em>, <em>Geminospora svalbardiae</em>, and <em>Grandispora protea</em> were recovered from the Huamampampa Formation. Upwards in the borehole, the Los Monos Formation yielded spore species, such as <em>Acinosporites acanthomammillatus</em>, <em>Acinosporites macrospinosus</em>, <em>Cymbosporites cyathus</em>, <em>Camarozonotriletes</em>? <em>concavus, Chelinospora ligurata, Cymbosporites variegatus</em>, <em>Geminospora lemurata</em>, and <em>Samarisporites</em> cf. <em>triangulatus,</em> that point to an Eifelian to middle Givetian age. Among the organic-walled phytoplankton, <em>Arkonites biluxus Cordobesia uruguayensis</em>, <em>Duvernaysphaera angelae</em>, <em>Duvernaysphaera tenuicingulata</em>, <em>Estiastra rhytidoa</em> and <em>Pterospermella pernambucensis</em> support the age based on the terrestrial palynomorphs. The relative abundance of marine and terrestrial palynomorphs indicates a nearshore environment.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"334 ","pages":"Article 105278"},"PeriodicalIF":1.7,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143157923","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

Introduction to the special issue: Pollen diversity, vegetation history and range shift in the (sub)tropics through the Cenozoic

IF 1.7 3区地球科学 Q2 PALEONTOLOGY

Review of Palaeobotany and Palynology

Pub Date : 2024-12-30 DOI: 10.1016/j.revpalbo.2024.105277

Limi Mao (毛礼米) , Kangyou Huang (黄康有) , Huasheng Huang (黄华生)

Fossil pollen records are valuable for reconstructing past floristic composition, vegetation and biogeographic history. In recent decades, a deeper understanding of plant diversity throughout the Cenozoic has been achieved, significantly due to improved taxonomic resolution of palynological data, particularly in the (sub)tropics, where pollen diversity is notably high. Particularly, the development of pollen databases and innovative techniques in systematic palynology has shed further light on our understanding of pollen diversity, vegetation history and range shift in the past, as well as the factors driving these changes. This special issue compiles the latest studies on 1) systematic palynology, highlighting updated methodologies such as high-resolution microscopy, machine learning, and chemotaxonomy, 2) long-term vegetation history and 3) spatio-temporal range shift mainly focusing on the (sub)tropics, encompassing change rate of dynamic vegetation in global or regional scales, human impacts, range shift of ecologically-important tree taxa through the Cenozoic based on fossil pollen records and/or molecular data.

This special issue features fourteen papers that explore pollen diversity, vegetation history and range shift in the (sub)tropics throughout the Cenozoic, categorized into five areas: (1) Pollen diversity: ranging from traditional morphological studies to chemical analyses of sporopollenin and applications of machine learning; (2) Outreach and education initiatives involving 3D printing of pollen grains; (3) Applications of fossil pollen records: including their significance for reconstructing palaeoclimate, palaeobiogeography and palynostratigraphy; (4) Challenges in pollen counting within Quaternary pollen analysis; and (5) Vegetation history and plant range shift. Future palynological studies should further focus on chemonotaxonomy, sedimentary ancient DNA (sedaDNA), and the application of machine leaning to both modern and fossil pollen analyses.

{"title":"Introduction to the special issue: Pollen diversity, vegetation history and range shift in the (sub)tropics through the Cenozoic","authors":"Limi Mao (毛礼米) , Kangyou Huang (黄康有) , Huasheng Huang (黄华生)","doi":"10.1016/j.revpalbo.2024.105277","DOIUrl":"10.1016/j.revpalbo.2024.105277","url":null,"abstract":"<div><div>Fossil pollen records are valuable for reconstructing past floristic composition, vegetation and biogeographic history. In recent decades, a deeper understanding of plant diversity throughout the Cenozoic has been achieved, significantly due to improved taxonomic resolution of palynological data, particularly in the (sub)tropics, where pollen diversity is notably high. Particularly, the development of pollen databases and innovative techniques in systematic palynology has shed further light on our understanding of pollen diversity, vegetation history and range shift in the past, as well as the factors driving these changes. This special issue compiles the latest studies on 1) systematic palynology, highlighting updated methodologies such as high-resolution microscopy, machine learning, and chemotaxonomy, 2) long-term vegetation history and 3) spatio-temporal range shift mainly focusing on the (sub)tropics, encompassing change rate of dynamic vegetation in global or regional scales, human impacts, range shift of ecologically-important tree taxa through the Cenozoic based on fossil pollen records and/or molecular data.</div><div>This special issue features fourteen papers that explore pollen diversity, vegetation history and range shift in the (sub)tropics throughout the Cenozoic, categorized into five areas: (1) Pollen diversity: ranging from traditional morphological studies to chemical analyses of sporopollenin and applications of machine learning; (2) Outreach and education initiatives involving 3D printing of pollen grains; (3) Applications of fossil pollen records: including their significance for reconstructing palaeoclimate, palaeobiogeography and palynostratigraphy; (4) Challenges in pollen counting within Quaternary pollen analysis; and (5) Vegetation history and plant range shift. Future palynological studies should further focus on chemonotaxonomy, sedimentary ancient DNA (sedaDNA), and the application of machine leaning to both modern and fossil pollen analyses.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"334 ","pages":"Article 105277"},"PeriodicalIF":1.7,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143157919","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

Coniferous wood fossils as records of paleoecology, paleoclimatology, and paleoenvironment: A review

IF 1.7 3区地球科学 Q2 PALEONTOLOGY

Review of Palaeobotany and Palynology

Pub Date : 2024-12-24 DOI: 10.1016/j.revpalbo.2024.105276

Leon Nahuel Torres , Xiao Shi , Yuling Na , Bing Wang , Chi Tian , Wenpei Pei , Yan Liu , Jianxin Yu

Trees record a series of physiological responses to climatic and environmental changes within their wood. Consequently, quantitative and qualitative analyses of their tree growth rings enable the retrieval of past climatic and environmental information. Tree growth ring analyses have been extensively utilized in modern forestry, geography, paleoclimatology, and paleontology. This article aims to present the key proxies and anatomical characteristics that have proven valuable in various studies. Ten primary points of analysis are identified for fossil wood, including mean growth ring width, mean sensitivity, annual sensitivity, leaf life-span analysis, percentage of latewood, division of growth ring types, percentage diminution, identification of trauma signs, and solar influence, along with three different isotopes, carbon, oxygen and hydrogen, for mummified material. By examining these parameters and employing these methods on fossil conifer wood, we not only gain a unique perspective on leaf longevity and phenology but also develop a more comprehensive understanding of the paleoenvironmental and paleoclimatic conditions during the conifer's existence. Therefore, tree growth ring analyses offer distinct advantages for investigating fossil conifer wood and facilitating subsequent climatic and environmental reconstructions.

{"title":"Coniferous wood fossils as records of paleoecology, paleoclimatology, and paleoenvironment: A review","authors":"Leon Nahuel Torres , Xiao Shi , Yuling Na , Bing Wang , Chi Tian , Wenpei Pei , Yan Liu , Jianxin Yu","doi":"10.1016/j.revpalbo.2024.105276","DOIUrl":"10.1016/j.revpalbo.2024.105276","url":null,"abstract":"<div><div>Trees record a series of physiological responses to climatic and environmental changes within their wood. Consequently, quantitative and qualitative analyses of their tree growth rings enable the retrieval of past climatic and environmental information. Tree growth ring analyses have been extensively utilized in modern forestry, geography, paleoclimatology, and paleontology. This article aims to present the key proxies and anatomical characteristics that have proven valuable in various studies. Ten primary points of analysis are identified for fossil wood, including mean growth ring width, mean sensitivity, annual sensitivity, leaf life-span analysis, percentage of latewood, division of growth ring types, percentage diminution, identification of trauma signs, and solar influence, along with three different isotopes, carbon, oxygen and hydrogen, for mummified material. By examining these parameters and employing these methods on fossil conifer wood, we not only gain a unique perspective on leaf longevity and phenology but also develop a more comprehensive understanding of the paleoenvironmental and paleoclimatic conditions during the conifer's existence. Therefore, tree growth ring analyses offer distinct advantages for investigating fossil conifer wood and facilitating subsequent climatic and environmental reconstructions.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"334 ","pages":"Article 105276"},"PeriodicalIF":1.7,"publicationDate":"2024-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143157917","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 species of Acitheca (Psaroniaceae, Marattiales) with exceptionally and three-dimensionally preserved sporangia from the Buçaco Carboniferous Basin, western central Portugal

IF 1.7 3区地球科学 Q2 PALEONTOLOGY

Review of Palaeobotany and Palynology

Pub Date : 2024-12-22 DOI: 10.1016/j.revpalbo.2024.105274

Pedro Correia , Sofia Pereira , Zbynĕk Šimůnek , Artur A. Sá , Zélia Pereira

A new fern fossil-species Acitheca machadoi sp. nov. is erected under the family Psaroniaceae (Marattiales), based on adpression fossil remains of fertile foliage from the Monsarros Formation (upper Stephanian C, upper Gzhelian) of the Buçaco Carboniferous Basin, in western central Portugal. Acitheca machadoi comprises relatively narrow and long fertile pinnules bearing exceptionally and three-dimensionally preserved sporangia with in situ spores. These sporangia are elongate (fusiform) and one of the smallest documented for the genus, with a triangular pyramid-like shape in the upper part and rounded to hexagonal-like attachment base. Its occurrence within an assemblage dominated by mesophytes to hygrophytes, with fewer drought-tolerant forms, suggests a wetland environment with a seasonal climate, framed in the transition from humid to dry conditions in western Iberia during the Late Pennsylvanian–early Permian. This palaeobotanical finding provides new insights on the palaeoecology and species diversity of Acitheca, whose currently known fossil record is certainly underestimated.

{"title":"A new species of Acitheca (Psaroniaceae, Marattiales) with exceptionally and three-dimensionally preserved sporangia from the Buçaco Carboniferous Basin, western central Portugal","authors":"Pedro Correia , Sofia Pereira , Zbynĕk Šimůnek , Artur A. Sá , Zélia Pereira","doi":"10.1016/j.revpalbo.2024.105274","DOIUrl":"10.1016/j.revpalbo.2024.105274","url":null,"abstract":"<div><div>A new fern fossil-species <em>Acitheca machadoi</em> sp. nov. is erected under the family Psaroniaceae (Marattiales), based on adpression fossil remains of fertile foliage from the Monsarros Formation (upper Stephanian C, upper Gzhelian) of the Buçaco Carboniferous Basin, in western central Portugal. <em>Acitheca machadoi</em> comprises relatively narrow and long fertile pinnules bearing exceptionally and three-dimensionally preserved sporangia with in situ spores. These sporangia are elongate (fusiform) and one of the smallest documented for the genus, with a triangular pyramid-like shape in the upper part and rounded to hexagonal-like attachment base. Its occurrence within an assemblage dominated by mesophytes to hygrophytes, with fewer drought-tolerant forms, suggests a wetland environment with a seasonal climate, framed in the transition from humid to dry conditions in western Iberia during the Late Pennsylvanian–early Permian. This palaeobotanical finding provides new insights on the palaeoecology and species diversity of <em>Acitheca</em>, whose currently known fossil record is certainly underestimated.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"334 ","pages":"Article 105274"},"PeriodicalIF":1.7,"publicationDate":"2024-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143157922","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

The Middle Triassic Flora of the Tanga Basin, Tanzania

IF 1.7 3区地球科学 Q2 PALEONTOLOGY

Review of Palaeobotany and Palynology

Pub Date : 2024-12-20 DOI: 10.1016/j.revpalbo.2024.105275

Rachel A. Sabuni , Evelyn Kustatscher

The Bamba, Pangarawe and Kakindu outcrops of the Tanga Basin (Tanzania) yielded a diverse plant fossil assemblages, including Pagiophyllum, Voltziopsis, Heidiphyllum, and possibly Sphenobaiera. This composition of the plant fossil assemblage suggests a Middle Triassic age for the fossiliferous beds extending the fossil record in the Tanga Basin. The plant remains are preserved in fine-grained shales and silts, suggesting deposition in low-energy environments, such as lakes, with reduced transport from surrounding growing areas. The plants likely thrived in a dynamic ecosystem composed of coniferous forests interspersed with open vegetation, reflecting adaptation to varying environmental conditions driven by a seasonal, monsoonal climate. This study highlights the significance of the Tanga Basin in elucidating the floristic composition of Gondwana's mid-latitudes. The mid-latitudes of Gondwana, generally devoid of plant fossil findings, where previously assigned to the desert biome, whereas the finding support a seasonal climate of the temperate biome during the Triassic.

引用次数: 0

Illigera fruits (Hernandiaceae) from the Miocene of Alum Bluff, northwestern Florida

IF 1.7 3区地球科学 Q2 PALEONTOLOGY

Review of Palaeobotany and Palynology

Pub Date : 2024-12-17 DOI: 10.1016/j.revpalbo.2024.105273

Hai Zhu , Steven R. Manchester , Terry A. Lott

The Middle Miocene Alum Bluff flora in northwestern Florida provides a valuable opportunity for comprehending former floristic diversity and the development of modern temperate forest in southeastern North America. The flora previously was understood to be dominated by deciduous subtropical to temperate taxa. Here, we present newly discovered winged fruits of the tropical genus Illigera (Hernandiaceae). The new fossil species, Illigera berryi Hai Zhu, Manch. et T.A. Lott is the first confirmed thermophilic macrofossil record from the flora and enriches the known floristic diversity. This occurrence expands the paleogeographic distribution of Illigera in North America southeastward and extends the known fossil history of the genus from the Eocene to the Middle Miocene. Combined with previously recognized fossil occurrences from the Eocene of western North America and eastern Asia, the fossil evidence indicates that Illigera had a wide distribution in the Cenozoic, and suggests that the genus may have originated from the Northern Hemisphere.

{"title":"Illigera fruits (Hernandiaceae) from the Miocene of Alum Bluff, northwestern Florida","authors":"Hai Zhu , Steven R. Manchester , Terry A. Lott","doi":"10.1016/j.revpalbo.2024.105273","DOIUrl":"10.1016/j.revpalbo.2024.105273","url":null,"abstract":"<div><div>The Middle Miocene Alum Bluff flora in northwestern Florida provides a valuable opportunity for comprehending former floristic diversity and the development of modern temperate forest in southeastern North America. The flora previously was understood to be dominated by deciduous subtropical to temperate taxa. Here, we present newly discovered winged fruits of the tropical genus <em>Illigera</em> (Hernandiaceae). The new fossil species, <em>Illigera berryi</em> Hai Zhu, Manch. et T.A. Lott is the first confirmed thermophilic macrofossil record from the flora and enriches the known floristic diversity. This occurrence expands the paleogeographic distribution of <em>Illigera</em> in North America southeastward and extends the known fossil history of the genus from the Eocene to the Middle Miocene. Combined with previously recognized fossil occurrences from the Eocene of western North America and eastern Asia, the fossil evidence indicates that <em>Illigera</em> had a wide distribution in the Cenozoic, and suggests that the genus may have originated from the Northern Hemisphere.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"334 ","pages":"Article 105273"},"PeriodicalIF":1.7,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143157807","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–vegetation–rainfall relationships in the Gebel al-Akhdar, Northeast Libya

IF 1.7 3区地球科学 Q2 PALEONTOLOGY

Review of Palaeobotany and Palynology

Pub Date : 2024-12-16 DOI: 10.1016/j.revpalbo.2024.105272

Chris O. Hunt , Lisa Coyle McClung , Laura Edwards , Hwedi el-Rishi , Graeme Barker

Very little work has been done on vegetation–pollen relationships in Northeast Africa, which presents barriers for interpreting pollen diagrams in this region. This paper therefore investigates rainfall-vegetation–pollen relationships in the Gebel al-Akhdar in Northeast Libya. The Gebel al-Akhdar is an unique upland habitat island, isolated between the Mediterranean Sea and the Sahara Desert, characterised by a high degree of endemicity amongst its flora and invertebrate fauna, and with an extremely long history of human activity. Orographically-driven rainfall supports dry Mediterranean woodland and maquis on the northern slopes of the Gebel, with scrub-steppe passing into steppe and then pre-desert on the dryer southern slopes. Here we document rainfall/vegetational/pollen relationships along North–South transects across the Gebel al-Akhdar. Vegetation around pollen sample sites was recorded. Precipitation was interpolated from ERA5 satellite data, and from the local meteorological network. Surface pollen assemblages allow us to distinguish habitats with higher effective moisture on the northern slopes of the Gebel from those with lower effective moisture on the southern slopes. Coastal garrigue is characterised by high Pinus pollen, reflecting the very low pollen productivity of this habitat. Despite complexities in the relationship between vegetation and surface pollen, most parts of the rainfall distribution in the Gebel al-Akhdar can be characterised palynologically, giving confidence in the use of palynology to characterise past rainfall regimes in the region.

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引用次数: 0

Palynology of two drilling cores from the Maniamba Basin, Mozambique (Central Gondwana): Insights on age and palaeoenvironments

IF 1.7 3区地球科学 Q2 PALEONTOLOGY

Review of Palaeobotany and Palynology

Pub Date : 2024-12-15 DOI: 10.1016/j.revpalbo.2024.105271

N. Nhamutole , M.K. Bamford , P.A. Souza , C.M. Félix , D.A. Carmo , J. Peu

In the present work, dark siltstones, claystones, shales, coals and carbonaceous shale were critically investigated to identify palynofloral assemblages in Mozambiqueʼs overlooked Karoo-aged Maniamba Basin. The study was based on two borehole cores. It unveiled a rich and diversified microflora composed of four distinct palynoassemblages dominated by striate and non-striate bisaccate pollen grains that have prevailed under humid, warm and arid climate conditions in these Gondwana strata. The lower palynoassemblages 1 (P1) and 2 (P2) in both borehole cores are marked by the occurrence of common and abundant striate and non-striate bisaccate pollen, Protohaploxypinus spp., Protohaploxypinus limpidus, Striatopodocarpites cancellatus, Lueckisporites spp., Scheuringipollenites spp. and colpate Cycadopites cymbatus. Late Permian key taxa such as Marsupipollenites triradiatus, Plicatipollenites gondwanensis, and Guttulapollenites hannonicus are found herein. The palynoassemblages 3 (P3) and 4 (P4), were assigned to the Early Triassic based on the FAD of key taxa, chiefly Platysaccus papilonis, Lunatisporites spp., Lundbladispora sp. and Krauselisporites sp. A younger age is assigned to the K5 Formation in the Maniamba Basin correlating well-known Gondwana sequences from the Katberg and Balfour formations from the Main Karoo Basin (South Africa), the Moatize-Minjova Basin (Mozambique), Sakamena Group (Madagascar), Raniganj-Panchet formations (India), Mid-Zambezi valley (Zambia), and the Salt Range Basin (Pakistan). Fossil wood occurrences support the assigned ages. Although other proxies are needed to identify the Permo-Triassic transition, the obtained new palynological data could spark interest in exploring methane associated with coal beds.

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