Review of Palaeobotany and Palynology最新文献

{"title":"Impact of the Younger Dryas dry event on equatorial forest ecosystems: Insight from Lake Child, Manengouba crater, Cameroon","authors":"A.-M. Lézine ,&nbsp;B. Turcq ,&nbsp;T. Desjardins ,&nbsp;M. Mandeng-Yogo ,&nbsp;F. Cetin ,&nbsp;B. Tchiengué ,&nbsp;G. Achoundong","doi":"10.1016/j.revpalbo.2024.105237","DOIUrl":"10.1016/j.revpalbo.2024.105237","url":null,"abstract":"<div><div>This paper presents the pollen, microcharcoal and geochemical data generated by a sediment core extracted from Lake Child in the Manengouba massif of Cameroon (MAN-01: 5.02996 N, 9.822910E; 1948 m asl) covering the time interval between 15.4 and 9.6 ka. With an exceptional sedimentation rate of up to 13 cm per year, this record represents the highest resolution of the environmental changes that took place in the highlands of equatorial Atlantic Africa during the last deglaciation. Our study shows (1) that the Younger Dryas (YD) dry event consisted of two distinct phases: a dry phase between 12.8 and 11.7 ka followed by a wetter and colder phase between 11.7 and 11.3 ka; (2) that the Afromontane forest elements that were present during the last glacial period were replaced by sub-montane forest elements during the Holocene; (3) that vegetation and the hydrological environment have not always evolved in parallel: this was particularly the case at the YD/Holocene transition when the abrupt shift in hydrological conditions contrasted with the gradual spread of forests.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"332 ","pages":"Article 105237"},"PeriodicalIF":1.7,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656074","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}

{"title":"Seeds Alapaja (Cupressaceae) from the Cretaceous of Western Siberia and their paleo-DNA","authors":"A.A. Torshilova,&nbsp;I.A. Ozerov,&nbsp;N.A. Zhinkina,&nbsp;A.V. Rodionov","doi":"10.1016/j.revpalbo.2024.105236","DOIUrl":"10.1016/j.revpalbo.2024.105236","url":null,"abstract":"<div><div>The article presents the results of cytoembryological research of the structure of fossil seeds in coniferous plants <em>Alapaja</em> cf. <em>uralensis</em> (Cupressaceae) from the Cenomanian–Turonian deposits of Western Siberia (age about 91.5 ± 8.5 Mya), and the results of the Feulgen test for the preservation of their structures' paleo-DNA in the nuclei. The study revealed the presence of fragments of embryo, megagametophyte and nucellus in the seed. The presence of megaspore membrane was also identified in the seed. The seed coat is 2–3-layered, the upper layer is very thin and presents just partially, and the middle layer of testa is represented by sclerotesta, the lower layer cells are fused into a single mass. It was established that nuclei are present in the cells of the embryo, megagametophyte and nucellus, however, in most cases, the DNA-deoxyribose skeleton, serving as a target for the Schiff reagent during the Feulgen reaction, is not cytologically detected in the nuclear chromatin. Only in two cases: in fragments of presumably embryonic tissue and megagametophyte, nuclei with a positive reaction according to Felgen were found, which indicates the preservation of aldehyde groups of deoxyribose in the nuclei of its individual parts.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"332 ","pages":"Article 105236"},"PeriodicalIF":1.7,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656140","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}

{"title":"Phytolith spectra of the monotypic grass Danthonidium gammiei (Bhide) Hubb. in Hook. (Danthonioideae) from Northern Western Ghats, India: Taxonomic and environmental significance of its distinctive Bilobates","authors":"Ranita Biswas ,&nbsp;Manjuree Karmakar ,&nbsp;Madhab Naskar ,&nbsp;Oindrila Biswas ,&nbsp;K. Althaf Ahamed Kabeer ,&nbsp;Subir Bera","doi":"10.1016/j.revpalbo.2024.105235","DOIUrl":"10.1016/j.revpalbo.2024.105235","url":null,"abstract":"<div><div>Grass Silica Short Cell Phytoliths (GSSCPs) are regarded as a potential adjunctive tool for grass subfamily identification owing to their definite morphology and affinity towards certain grass subfamilies. In the present study phytolith spectra of the monotypic genus <em>Danthonidium gammiei</em> (Bhide) Hubb. in Hook., collected from northern Western Ghats, Maharashtra is studied in detail for the first time. This grass profusely produces B<span>ilobates</span> along with other GSSCPs and E<span>longate</span> types. A thorough study is undertaken to find out potential of the <em>Danthonidium gammiei</em> B<span>ilobates</span> in distinguishing this grass from other major B<span>ilobate</span> producing grass sub-families like Panicoideae and Aristidoideae. The possible relationship between B<span>ilobates</span> specific for <em>Danthonidium gammiei</em> and the intensity of rainfall in northern Western Ghats is also discussed here. Statistical analyses (PCA, CA, and CCA) also establish the potential of B<span>ilobate</span> phytoliths in identifying Danthonioideae subfamily and discriminating different rainfall zones of the region.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"332 ","pages":"Article 105235"},"PeriodicalIF":1.7,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656075","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}

{"title":"Organic walled dinoflagellate cyst biostratigraphy of the Bartonian/Priabonian GSSP Alano di Piave section, NE Italy","authors":"Alina I. Iakovleva","doi":"10.1016/j.revpalbo.2024.105233","DOIUrl":"10.1016/j.revpalbo.2024.105233","url":null,"abstract":"<div><div>The present paper augments the multidisciplinary stratigraphic analysis of the Global Stratotype Section and Point (GSSP) Bartonian-Priabonian boundary Alano di Piave section (NE Italy). Twenty-seven stratigraphically signficant organic walled dinoflagellate cyst events, calibrated against the magnetostratigraphic polarity timescale, and earlier established zonations based on calcareous microfossils are recognized. Among these events the first occurrence (FO) of <em>Oligokolpoma agniniae</em> sp. nov. (∼<!--> <!-->8 m below the GSSP boundary), and the FO of <em>Reticulatosphaera actinocoronata</em> (∼<!--> <!-->8 m above the GSSP boundary) may be considered as additional stratigraphic indicators for the Bartonian-Priabonian boundary. Six new potentially stratigraphically significant species <em>Heteraulacacysta alanoensis</em> sp. nov., <em>Heteraulacacysta reticulata</em> sp. nov., <em>Impagidinium bellunoensis</em> sp. nov., <em>Impagidinium veneziaense</em> sp. nov., <em>Lophocysta domenicorioi</em> sp. nov., and <em>Oligokolpoma agniniae</em> sp. nov. are formally described.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"332 ","pages":"Article 105233"},"PeriodicalIF":1.7,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656073","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}

{"title":"Relationships between pollen assemblages and modern vegetation of the southern Gaoligong Mountains region, southwest China","authors":"Yunkai Deng ,&nbsp;Chunxia Zhang ,&nbsp;Wenying Jiang ,&nbsp;Yan Zhao ,&nbsp;Zhengtang Guo","doi":"10.1016/j.revpalbo.2024.105230","DOIUrl":"10.1016/j.revpalbo.2024.105230","url":null,"abstract":"<div><div>Comprehensive understanding of the modern pollen–vegetation relationship is crucial for utilizing fossil pollen to reconstruct palaeovegetation, especially in mountainous areas of southwestern China. In this study, we present forty-five modern surface samples collected from five different vegetation communities of the southern Gaoligong Mountains region, and the vegetation composition was investigated at each sample site. The modern pollen assemblages were analyzed through multivariate analysis to evaluate the relationships between vegetation types and pollen assemblages, and to investigate the representation of major pollen types in different vegetation types. The results indicate that the surface pollen assemblages of different vegetation types reliably represent the modern vegetation. The median <em>R</em>-values of dominant pollen taxa in the Gaoligong Mountains region can be ordered as follows: <em>Pinus</em> &gt; <em>Alnus</em> &gt; Poaceae &gt; evergreen <em>Quercus</em>. The over-representation of <em>Pinus</em> pollen, attributed to its high productivity and strong dispersal ability, makes it the dominant component of exotic pollen. Conversely, the under-representation of evergreen <em>Quercus</em> suggests that the presence of its pollen within a sample might indicate the growth of the local parent plant in the study area. The human activities in the region have a recognizable effect on the surface pollen spectra and also exert a significant negative impact on pollen diversity. Our study supplements the modern pollen database of the mountain regions in southwestern China, and provides representative modern pollen analogues to interpret fossil pollen records from southwestern China and similar regions.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"332 ","pages":"Article 105230"},"PeriodicalIF":1.7,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142560677","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}

{"title":"Scolecopteris oxydonta sp. nov., a new marattialean fern from the early Permian Wuda Tuff Flora","authors":"Wenjun Sun ,&nbsp;Weiming Zhou ,&nbsp;Yifei Wu ,&nbsp;Josef Pšenička ,&nbsp;Jason Hilton ,&nbsp;Jun Wang","doi":"10.1016/j.revpalbo.2024.105231","DOIUrl":"10.1016/j.revpalbo.2024.105231","url":null,"abstract":"<div><div>A marattialean fern with organically connected fertile and vegetative parts is described from the early Permian Wuda Tuff Flora in Inner Mongolia, China. The tripinnate fronds have typical pecopterid vegetative pinnules but do not match any known <em>Pecopteris</em> species. The fertile pinnules are distinctly different from the vegetative ones, with an extended margin that forms long lobes, bending abaxially to cover the synangia. Each fertile pinnule bears 7–10 ovate, pedicellate synangia arranged abaxially in a single row to either side of the midvein, with each synangium composed of 3–4 elongate sporangia. The sporangium wall is three-layered, with the outermost layer differentiated into four areas peripherally to provide differing mechanical strengths and facilitate dehiscence. In situ spores are trilete and 39–45 μm in diameter. These combined characteristics place the studied fern in the <em>Scolecopteris</em> Minor group of the Psaroniaceae family. The new species, <em>Scolecopteris oxydonta</em> sp. nov., exhibits many evolutionarily advanced traits such as modified fertile pinnules, unvascularized pedicels, differentiated sporangium walls, and a specialized opening mechanism. However, <em>S. oxydonta</em> sp. nov. also retains evolutionarily primitive traits including relatively large spores. <em>S. oxydonta</em> sp. nov. represents the fourth <em>Scolecopteris</em> species recognized from the Wuda Tuff Flora, adding to the growing body of evidence on the morphology and diversity of marattialean plants from the Permian of Cathaysia. We also consider preservational differences among the specimens and suggest that the composition and morphology of fertile pinnules produced closed microenvironments during early diagenesis that facilitated localized anatomical preservation.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"332 ","pages":"Article 105231"},"PeriodicalIF":1.7,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142560676","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}

{"title":"Late Miocene aquatic flora from the Yalvaç Basin (Central Anatolia, Türkiye): Biostratigraphy and paleoecology","authors":"Elvan Demirci ,&nbsp;Josep Sanjuan ,&nbsp;Cemal Tunoğlu ,&nbsp;Alaettin Tuncer ,&nbsp;Yılmaz Bulut","doi":"10.1016/j.revpalbo.2024.105221","DOIUrl":"10.1016/j.revpalbo.2024.105221","url":null,"abstract":"<div><div>An assemblage of fructifications and seeds of aquatic plants (8 charophyte species and 5 seeds/fruits) from upper Miocene deposits of the Yalvaç Basin (Central Anatolia, Türkiye) is described and illustrated here for the first time. This flora has been recovered from 2 localities: a 39 m-thick sedimentary sequence near the village of Balcı, dominated by limestones related to well-developed, alkaline, and deep lake; and a 252 m-thick borehole (SK–2) near the village of Şarkikaraağaç, dominated by organic claystones and marls formed in a context of palustrine and shallow lake conditions. Both sequences are within the Göksöğüt Formation (upper Miocene–Pliocene). The assemblage at Balcı is dominated by gyrogonites of the genus <em>Sphaerochara</em> cf. <em>intricata</em>, <em>Chara vulgaris</em>, <em>Chara</em> cf. <em>aspera, Lychnothamnus duplicicarinatus,</em> and <em>Lychnothamnus</em> cf. <em>barbatus</em> subsp. <em>megalicarpus.</em> Gyrogonites from the lower part of the SK–2 borehole at Şarkikaraağaç are very diverse and well-preserved. The assemblage is composed of <em>Sphaerochara intricata</em>, <em>Chara vulgaris, Chara globularis, Chara</em> cf. <em>hispida, Chara</em> cf. <em>aspera</em>, <em>Nitellopsis</em> (<em>Tectochara</em>) <em>etrusca</em>, and <em>Lychnothamnus duplicicarinatus.</em> Several seeds/fruits of aquatic and helophytic plants occur associated with this charophyte flora, including <em>Ceratophyllum</em>, <em>Aldrovanda, Scirpus, Ranunculus</em> and <em>Typha</em>. The dominance of the species <em>N.</em> (<em>T.</em>) <em>etrusca</em> suggests that the base of the sedimentary sequence at Şarkikaraağaç is late Miocene, most probably Vallesian-Turolian in age. Likewise, the occurrence of <em>Lychnothamnus</em> cf. <em>barbatus</em> subsp. <em>megalicarpus</em> at the base of the Balcı sequence indicates that it probably dates back to the Turolian age. The facies assemblage and the associated fossils such as ostracods from both Balcı section and the SK–2 borehole indicate that palustrine and lacustrine conditions prevailed in the Yalvaç Basin during the late Miocene. The lake was stable, oligotrophic and oligohaline in the central part of the basin, while the water table fluctuated along the lake's edges where palustrine vegetated conditions prevailed. The species <em>N.</em> (<em>T.</em>) <em>etrusca</em> and <em>L. duplicicarinatus</em> and <em>L. barbatus</em> subsp. <em>megalicarpus</em> are being reported for the first time in Anatolia, providing significant information about the distributional pattern of these biostratigraphically significant taxa.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"332 ","pages":"Article 105221"},"PeriodicalIF":1.7,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142572035","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}

{"title":"A palynological investigation of the Early-Middle Devonian transition and associated Choteč Event in Northern Spain","authors":"Gilda Lopes ,&nbsp;Silvia Blanco-Ferrera ,&nbsp;David P.G. Bond ,&nbsp;Sarah E. Greene ,&nbsp;Jason Hilton ,&nbsp;John E.A. Marshall ,&nbsp;Javier Sanz-López ,&nbsp;Charles H. Wellman","doi":"10.1016/j.revpalbo.2024.105222","DOIUrl":"10.1016/j.revpalbo.2024.105222","url":null,"abstract":"<div><div>In Northern Spain there is a near complete sequence of Devonian rocks that accumulated around a relatively isolated land mass, the Armorican Terrane Assemblage, which was separated from Gondwana to the south and Laurussia to the north. The Lower to Middle Devonian transition records a dramatic facies change from carbonate to siliciclastic sedimentation. The Choteč Event, a global anoxic pulse that occurs just above the Lower-Middle Devonian boundary (392.5–393.1 Ma), has been identified within this transition. These strata are included in the Moniello and Naranco fms in Asturias and the equivalent Santa Lucía and Huergas fms in Leon. They are independently age-contrained based on conodont and invertebrate biotas. For the first time we describe palynomorph assemblages recovered from the Lower to Middle Devonian transition in Northern Spain. The assemblages contain terrestrial (spores) and marine (acritarchs, prasinophycean cysts, chitinozoans) elements, thus recording primary productivity on both the land and in the oceans. The older assemblages belong to the <em>annulatus–sextantii</em> Spore Zone and the younger assemblages the <em>douglastownensis–eurypterota</em> Spore Zone, which is concordant with the independent age constraints. Our analysis of the distribution and diversity of marine and terrestrial palynomorphs supports interpretations of the facies change associated with the Choteč Event as being related to a change to increased rainfall and terrestrial runoff. However, this change is associated with only limited taxon turnover in both land plant spores and marine phytoplankton and chitinozoans.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"332 ","pages":"Article 105222"},"PeriodicalIF":1.7,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142553842","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}

{"title":"Phytolith characterization of culturally salient plant species of the Pacific Northwest of North America","authors":"Levi Cormier,&nbsp;Chelsey Geralda Armstrong","doi":"10.1016/j.revpalbo.2024.105220","DOIUrl":"10.1016/j.revpalbo.2024.105220","url":null,"abstract":"<div><div>Palaeoecological and archaeological studies often use soil phytoliths to gain insight into past vegetation changes and the long-term use of plants by people, particularly domesticated cultivars. However, to make accurate interpretations and analyses using plant phytoliths, regionally-specific reference collections are warranted. There is ample research documenting phytolith morphotypes observed in grass species worldwide (due to their high phytolith production), and of dicots in tropical regions, but there is dearth of phytolith references for dicot species in temperate regions like the Pacific Northwest of North America. This study aims to fill part of this gap by documenting phytolith morphotypes observed in 60 culturally important plant foods, medicines, and textiles, all predominantly dicot species. Phytoliths are classified by abundance in specific plant parts (e.g., stem, leaf, flower) and the findings are compared to closely related species studied elsewhere. Results indicate that many of the dicot plant species in the Pacific Northwest produce more phytoliths than closely related species worldwide, likely due to differing environmental factors which affect phytolith production in plants. These findings could be useful in palaeoecological contexts to assess vegetation changes or identify dicot-dominated ecosystems, like Indigenous cultivated and managed forests and other perennial fruit tree/shrub dominated landscapes. Additionally, three of the species studied here showed possible diagnostic phytoliths but further confirmation is warranted. Future studies should consider localized environmental patterns affecting phytolith production, and therefore, our understanding of phytolith taxonomy and deposition/taphonomy.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"332 ","pages":"Article 105220"},"PeriodicalIF":1.7,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142537203","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}

{"title":"A marattialean fern with in situ spores, Cyathocarpus benefoliatii sp. nov., from the Lopingian of Southwest China","authors":"Yun Guo ,&nbsp;Yu Zhou ,&nbsp;Josef Pšenička ,&nbsp;Jiří Bek ,&nbsp;Zhuo Feng","doi":"10.1016/j.revpalbo.2024.105218","DOIUrl":"10.1016/j.revpalbo.2024.105218","url":null,"abstract":"<div><div>A species of adpressed marattialean fern having pinnules with fertile organs, <em>Cyathocarpus benefoliatii</em> Yu.Guo, Zhou et Z.Feng sp. nov., is established from the Lopingian (upper Permian) of eastern Yunnan Province, Southwest China. Fronds of this new species are at least tripinnate, with alternately arranged penultimate pinnae, alternately or suboppositely arranged ultimate pinnae, and alternately arranged pinnules. Fertile pinnules are linguiform in shape and abaxially bear a row of 4–7 synangia tightly arranged on each side of the midvein from the base to the apex. Synangia are ovoidal, radially symmetrical, and individually consists of 4 or 5 exannulate sporangia. Sporangia are ovoidal and laterally fused along most or all of their length. The inner-facing sporangial wall has one layer of cells, while the outer-facing sporangial wall has three layers of cells. In situ spores of the <em>Laevigatosporites</em>/<em>Latosporites</em> type are 43–61 μm in diameter, monolete, and laevigate. The exine encompasses a perine, a sexine, and a nexine. These characteristics indicate that <em>Cyathocarpus benefoliatii</em> sp. nov. belongs to the <em>Pecopteris trevirani</em> Group (palynological grouping) of Paleozoic marattialeans.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"331 ","pages":"Article 105218"},"PeriodicalIF":1.7,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142530313","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}