Acta Palaeobotanica最新文献

The Late Oligocene flora of Hungary 匈牙利晚渐新世植物区系

Acta Palaeobotanica Pub Date : 2023-12-31 DOI: 10.35535/acpa-2023-0011

L. Hably, B. Erdei

引用次数: 0

Anatomically preserved early Cretaceous lycophyte shoots; enriching the paleontological record of Lycopodiales and Selaginellales 白垩纪早期蜥形纲嫩枝的解剖保存；丰富了蜥形纲和茄形纲的古生物记录

Acta Palaeobotanica Pub Date : 2023-12-31 DOI: 10.35535/acpa-2023-0009

G. Rothwell, R. Stockey

引用次数: 0

Palynology and palynofacies studies in the lowermost Jurassic of the Lusitanian Basin (Pereiros Formation of the Silves Group), Portugal: evidence of the first transgressive episode 葡萄牙卢西坦盆地最下侏罗统（西尔维斯组佩雷罗斯地层）的古植物学和古地层研究：第一次跃进的证据

Acta Palaeobotanica Pub Date : 2023-12-31 DOI: 10.35535/acpa-2023-0008

M. Vilas-Boas, Z. Pereira, S. Cirilli, Luís V. Duarte, Sérgio Luis Rodrigues Sêco, P. Fernandes

{"title":"Palynology and palynofacies studies in the lowermost Jurassic of the Lusitanian Basin (Pereiros Formation of the Silves Group), Portugal: evidence of the first transgressive episode","authors":"M. Vilas-Boas, Z. Pereira, S. Cirilli, Luís V. Duarte, Sérgio Luis Rodrigues Sêco, P. Fernandes","doi":"10.35535/acpa-2023-0008","DOIUrl":"https://doi.org/10.35535/acpa-2023-0008","url":null,"abstract":"The Silves Group of the Lusitanian Basin in Portugal represents the initial infill of the continental rifting basins that formed during the breakup of northern Pangaea regions. Evaporites, especially halite, mark the transition from continental to marine settings and the beginning of the deposition in passive margin basins. This work presents the results of the palynostratigraphic and palynofacies analysis of two partial sections from the Pereiros Formation at the top of the Silves Group. The two sections are composed of sandstones, mudstones and dolostones interpreted as deposited in fluvial and lacustrine settings without apparent marine influence. The palynological content is diverse and wellpreserved, dating both sections to the early Hettangian (Lower Jurassic), indicated by the presence of spores Ischyosporites variegatus, Kraeuselisporites reissingeri, Porcellispora longdonensis and the pollen grains Perinopollenites elatoides and Pinuspollenites minimus. The palynological content of one of the sections (Lamas I) is noticeable by microforaminifera linings, suggesting evidence for a hitherto marine incursion at this age in the Silves Group stratigraphy. The beds that yielded the microforaminifera linings are interpreted as having been deposited in an estuarine-type setting, created by the first and short-lived marine transgressive event in the Lusitanian Basin during the early Hettangian.","PeriodicalId":39861,"journal":{"name":"Acta Palaeobotanica","volume":"115 29","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139133261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

IPSD: e-repository of Permian seeds from Indian Lower Gondwana IPSD：印度下冈瓦纳二叠纪种子电子资料库

Acta Palaeobotanica Pub Date : 2023-12-31 DOI: 10.35535/acpa-2023-0010

Nilay Govind, Mrutyunjaya Sahoo, S. S. K. Pillai, Suraj Kumar Sahu

{"title":"IPSD: e-repository of Permian seeds from Indian Lower Gondwana","authors":"Nilay Govind, Mrutyunjaya Sahoo, S. S. K. Pillai, Suraj Kumar Sahu","doi":"10.35535/acpa-2023-0010","DOIUrl":"https://doi.org/10.35535/acpa-2023-0010","url":null,"abstract":"The interest and importance of studying the reproductive strategies of Palaeozoic plants are growing. Fossil seeds play an essential role in this line of study, as they are widely described from different sedimentary formations throughout the Permian period. The Indian Permian Seed Database (IPSD) software will be an information system for ensuring the storage, safety, accessibility and recovery of the details of Indian Permian seed records in a selective manner. The current database includes 28 genera and 44 species of compressed seeds described from Lower Gondwana (Permian), with all the details for researchers. The software provides options for addition, deletion, modification and search facility. The search also includes different options (single or combination). It is a quick and organised way to look for seeds, especially on a data grid for information about seeds that have already been published in the same or different sediments. IPSD is a tool for the computer-based identification of seeds and distinguishing different genera or species within the same category. It is user-friendly and provides updated knowledge of seeds from the Lower Gondwana basins of India. It provides morphotaxonomical characters, distribution and photo documentation of seeds. The software increases accuracy through computerassisted identification of seeds. Hence, reducing and curtailing unnecessary information while describing a new species with inadequate earlier knowledge of Permian seeds.","PeriodicalId":39861,"journal":{"name":"Acta Palaeobotanica","volume":"78 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139130589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Some notes on the types of pollen aperture in the genus Crocus L. (Iridaceae) 关于番红花属（鸢尾科）花粉孔类型的一些说明

Acta Palaeobotanica Pub Date : 2023-12-31 DOI: 10.35535/acpa-2023-0012

A. Muradyan, Alla Hayrapetyan, Marieta Asatryan, H. Sonyan

{"title":"Some notes on the types of pollen aperture in the genus Crocus L. (Iridaceae)","authors":"A. Muradyan, Alla Hayrapetyan, Marieta Asatryan, H. Sonyan","doi":"10.35535/acpa-2023-0012","DOIUrl":"https://doi.org/10.35535/acpa-2023-0012","url":null,"abstract":"Crocus L. (Iridaceae) is systematically a very problematic genus due to the lack of clear distinctive features, wide range of habitats and the heterogeneity of morphological features. This genus is also highly heterogeneous from a karyological point of view. Apart from the most common spiraperturate pollen grains in Crocus, the authors frequently mentioned a number of other aperture types for individual species (subspecies, variations, etc.), i.e. polyrugoidate, nonaperturate (inaperturate), polyaperturate, with more or less extensive furrows, with short furrows, etc. The purpose of this work is to perform a palyno-morphological analysis of pollen aperture types noted in the genus Crocus. The reason for the study is a significant disagreement among researchers when describing the types of pollen apertures in the genus Crocus. An analysis of the literature, as well as the results of our previous studies, showed that the genus Crocus is characterized by inaperturate (nonaperturate), polyaperturoidate, spiraperturate and net-like pollen apertures. The similar net-like apertures were observed for some representatives of the subgenus Scorpiris Sach of the genus Iris L., in particular, in Iris atropatana Grossh. In our opinion, this aperture type can serve as a link between the genus Crocus and the subgenus Scorpiris of the genus Iris. We suggest, that the spiraperturate pollen type mentioned most often for the representatives of the genus Crocus can be considered the basic type within the genus. On the other hand, formless aperture-like areas are genetically unstable transitory variations, which occurred arbitrarily due to mutations. Finally, “polyrugoidate” (or with net-like apertures) pollen type noted in the literature for C. chrysanthus subsp. punctatus F.Candan et N.Özhatay may be considered to be more advanced in the genus Crocus","PeriodicalId":39861,"journal":{"name":"Acta Palaeobotanica","volume":"50 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139132476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

New data on pollen morphology of the genus Camphorosma (Chenopodiaceae) 樟脑属花粉形态的新资料(藜科)

Acta Palaeobotanica Pub Date : 2023-01-01 DOI: 10.35535/acpa-2023-0002

Z. Tsymbalyuk, S. Mosyakin, L. Nitsenko

{"title":"New data on pollen morphology of the genus Camphorosma (Chenopodiaceae)","authors":"Z. Tsymbalyuk, S. Mosyakin, L. Nitsenko","doi":"10.35535/acpa-2023-0002","DOIUrl":"https://doi.org/10.35535/acpa-2023-0002","url":null,"abstract":"Recent molecular phylogenetic studies of Camphorosmoideae (Chenopodiaceae) demonstrated that Camphorosma is monophyletic. Palynomorphological peculiarities are used in taxonomy as additional diagnostic features and pollen analysis. Pollen morphology was studied using light and scanning electron microscopy, based on 13 specimens belonging to four species (C. annua, C. lessingii, C. monspeliaca and C. songorica). The aim of this research was to provide new data on pollen characteristics of the above mentioned species and to evaluate their taxonomic value. The results obtained show that pollen grains are pantoporate, spheroidal, circular in outline, undulate or slightly undulate on the edges; small or medium-sized. Pores are circular, with distinct margins. Exine sculpture is nanoechinate, tectum psilate or psilate-perforate. Pore membranes are nanoechinate. Taxonomic relevance of the most important characters of pollen grains (pollen diameter, pore number, pore diameter, distance between pores and between pore centres, C/D value, nanoechini density, presence/absence of perforations, number of nanoechini on pore membranes, structure of columellae) is discussed. The exine structure of pollen grains of all species was analysed for the first time in the current study. Pollen morphology proved to be an important additional source of information for taxonomy for species-specific identification and pollen analysis within Camphorosma. Palynomorphological data are interpreted in the existing phylogenetic framework.","PeriodicalId":39861,"journal":{"name":"Acta Palaeobotanica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69872901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Late Glacial development of lakes and wetland vegetation in a dune area in Central Poland 波兰中部沙丘地区湖泊和湿地植被的冰川后期发展

Acta Palaeobotanica Pub Date : 2023-01-01 DOI: 10.35535/acpa-2023-0001

A. M. Lewandowska, K. Milecka, P. Niedzielski

{"title":"Late Glacial development of lakes and wetland vegetation in a dune area in Central Poland","authors":"A. M. Lewandowska, K. Milecka, P. Niedzielski","doi":"10.35535/acpa-2023-0001","DOIUrl":"https://doi.org/10.35535/acpa-2023-0001","url":null,"abstract":"This study investigated the history of the development of six, paleo-lakes, which are at present filled with sediments, in a dune area in Central Poland, based on multiproxy paleoecological analyses and accelerator mass spectrometry radiocarbon dating. The aims of the paleoecological studies were: i) to determine the initial age of lakes development, ii) to reconstruct the local and regional plant succession, as well as iii) to reconstruct the environmental conditions during the initial stage of the development of lakes and peatlands. The obtained results indicated that: the former lakes in dune depressions were developed during the Bølling and Allerød when sparse vegetation allowed strong aeolian activity. Climate warming in Bølling led to the development of a denser plant cover, inhibition of sand transportation and the formation of mid-dune reservoirs with the accumulation of organic sediments. As indicated by 14C dating, mid-dunes basins were formed between 14 686 ± 60 cal. yr BP and 13 421 ± 60 cal. yr BP. The results of the paleobotanical analysis suggested that the reservoirs were shallow, oligo-mesotrophic, inhabited by pioneer calcicole vascular plant species such as: Chara sp., Hippuris vulgaris, Potamogeton natans, Potamogeton fresii, Potamogeton alpinus and Potamogeton filiformis, and mosses such as: Pseudocalliergon trifarium, Calliergon sp. and Calliergonella cordifolium. The area next to the reservoirs was covered with sparse pine forests combined with birch, which is typical of the Late Glacial period. The open areas were dominated by psammophilic and steppe vegetation, including Poaceae, Artemisia and Hippophae rhamnoides. Geochemical analysis revealed that Ca2+ and Fe3+ were in high concentrations, which could have influenced the presence of taxa preferring soil with high Ca2+ content. The accumulation of calcium in sediments confirms that the reservoirs were fed by groundwater originating from the progressive degradation of permafrost associated with thermal changes.","PeriodicalId":39861,"journal":{"name":"Acta Palaeobotanica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69872009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Aphananthe Planch. (Cannabaceae) flower preserved in the Mexican amber Aphananthe木板。(大麻科)保存在墨西哥琥珀中的花

Acta Palaeobotanica Pub Date : 2023-01-01 DOI: 10.35535/acpa-2023-0004

A. L. Hernández-Damián, Marco A. Rubalcava-Knoth, Sergio Rafael Silvestre Cevallos Ferriz

{"title":"Aphananthe Planch. (Cannabaceae) flower preserved in the Mexican amber","authors":"A. L. Hernández-Damián, Marco A. Rubalcava-Knoth, Sergio Rafael Silvestre Cevallos Ferriz","doi":"10.35535/acpa-2023-0004","DOIUrl":"https://doi.org/10.35535/acpa-2023-0004","url":null,"abstract":"Cannabaceae (Urticalean Rosids clade) is a small family with ten genera and a wide distribution in tropical and temperate regions worldwide. A complete understanding of the history of the lineage is fundamental to the integration of its fossil record, which needs to be better documented in low latitudes of North America. This work recognizes a new species, Aphananthe manchesteri Hernández-Damián, Rubalcava-Knoth et Cevallos- Ferriz sp. nov. (Cannabaceae), from the Miocene amber deposits of Simojovel de Allende, Chiapas, Mexico, based on a flower analyzed with reflected light and CT-scanning. Flowers of Cannabaceae are generally staminate or pistillate and small; staminate flowers have five sepals and opposite five stamens, and a pubescent pistillode, such as the fossil. However, the presence of three unguiculate and two ovate sepals with a puberulent surface are characteristics that allow its recognition as Aphananthe, the fossil is morphologically similar to Aphananthe monoica, an extant species that grows along the Pacific coast of Mexico. The presence of Aphananthe manchesteri sp. nov. in southern Mexico during the middle-early Miocene, ~23–15 Ma ago, supports the history of the lineage in lowlatitude North America, representing an expansion of the Boreotropical Flora. It adds to the taxonomical diversity of angiosperms preserved in Mexican amber, comparable with amber deposits from the Dominican Republic, where another anemophilous extinct species member of the Urticalean Rosids clade has been reported. This coincidence further supports the development of similar plant communities between these fossiliferous localities.","PeriodicalId":39861,"journal":{"name":"Acta Palaeobotanica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69872477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The natural environment in the vicinity of Lake Sporovskoye in the Late Glacial and Holocene 晚冰期和全新世斯波洛夫斯科耶湖附近的自然环境

Acta Palaeobotanica Pub Date : 2023-01-01 DOI: 10.35535/acpa-2023-0005

D. Tsvirko

引用次数: 0

The Paleocene Horse Creek florule, Tongue River Member of the Fort Union Formation, southeastern Montana, USA 古新世马溪花柱，美国蒙大拿东南部联合堡组舌河成员

Acta Palaeobotanica Pub Date : 2023-01-01 DOI: 10.35535/acpa-2023-0003

S. Manchester, Alyssa Foster, Terry A. Lott

引用次数: 0