Review of Palaeobotany and Palynology最新文献

{"title":"Evaluating Post-K/Pg persistence of Classopollis: Evidence from exceptionally preserved reworked Pollen in Paleogene sub and inter-Volcanic Sediments from Northern Ireland","authors":"Manuel Vieira ,&nbsp;David Jolley","doi":"10.1016/j.revpalbo.2025.105424","DOIUrl":"10.1016/j.revpalbo.2025.105424","url":null,"abstract":"<div><div>The Cheirolepidiaceae, an extinct family of coniferous plants that thrived during the Mesozoic Era, are well known through their distinctive <em>Classopollis</em> pollen. Although long thought to have declined globally during the Late Cretaceous, isolated occurrences of <em>Classopollis</em> in Paleocene deposits have sparked debate regarding the survival or reworking of this lineage beyond the Cretaceous–Paleogene (K/Pg) boundary. In this study, we document the occurrence of exceptionally well-preserved <em>Classopollis</em> pollen within Paleocene inter-volcanic sedimentary rocks of the Antrim Lava Group in Northern Ireland. Detailed morphological analyses using transmitted light microscopy, scanning electron microscopy (SEM), and transmission electron microscopy (TEM) reveal <em>Classopollis</em> pollen with uniformly thick tectate exines, well-developed baculate infratectal layers, and a dense nano-spinulose supratectal ornamentation. These features can be compared with Barremian-aged English specimens and support a Cretaceous origin. Palynological assemblages also include other reworked Cretaceous taxa and clastic components derived from the underlying Ulster White Limestone Formation, a Santonian–Early Maastrichtian unit exposed within the catchment. The stratigraphic context and preservation state of the <em>Classopollis</em> grains suggest that they were reworked rather than representing in situ Paleocene vegetation. This study supports the interpretation that post-K/Pg occurrences of <em>Classopollis</em> in the Antrim Basin are best explained by sedimentary recycling of Late Cretaceous deposits, adding to the broader discussion on Cheirolepidiaceae persistence and paleoecological relict status in the Paleogene.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"344 ","pages":"Article 105424"},"PeriodicalIF":1.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144913487","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":"Terrestrial end-Guadalupian crisis constrained by mid-latitude Permian palynological data from Jimsar, Junggar Basin, China","authors":"Xueqin Wang ,&nbsp;Yuewu Sun ,&nbsp;Xiao Shi","doi":"10.1016/j.revpalbo.2025.105445","DOIUrl":"10.1016/j.revpalbo.2025.105445","url":null,"abstract":"<div><div>The end-Permian mass extinction and the end-Guadalupian crisis are the most remarkable events in the Permian terrestrial ecosystem. To better understand the end-Guadalupian event in mid-latitude of Pangea in the Northern Hemisphere, palynological investigations are conducted on the terrestrial Permian deposits in the Dalongkou profile of Jimsar, northern Xinjiang, China. Two palynological assemblages are recognized in stratigraphic ascending order, the <em>Cordaitina subrotata</em>–<em>Striatoabieites lipidus</em>–<em>Protowelwitschiapollis exolescus</em> assemblage from the uppermost Lucaogou, Hongyanchi and the lower Quanzijie formations, and the <em>Kraeuselisporites spinulosus</em>–<em>Tuberculatosporites homotubercularis</em>–<em>Potonieisporites turpanensis</em> assemblage from the upper Quanzijie and lowermost Wutonggou formations. Based on the palynological data, the uppermost Lucaogou and Hongyanchi formations are assigned to the Roadian stage, and the lower Quanzijie Formation to the Capitanian stage, and the upper Quanzijie and lowermost Wutonggou formations to the Wuchiapingian stage. Thus, a Wordian-age hiatus is confirmed between the lower Quanzijie Formation and the Hongyanchi Formation on the basis of palynological evidence. The palynofloral succession shows a smooth transition between the Guadalupian and Lopingian palynofloras in the Dalongkou profile of Jimsar, in the Junggar Basin. The end-Guadalupian crisis resulted in a 17% loss of pollen species, indicating that the extinction was on the background level.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"344 ","pages":"Article 105445"},"PeriodicalIF":1.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145060579","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":"Soil phytolith assemblages reflect palm community composition in western Amazonia","authors":"Crystal N.H. McMichael ,&nbsp;Daniel Guerra ,&nbsp;Nina H. Witteveen ,&nbsp;Britte M. Heijink ,&nbsp;Annabel Zwarts ,&nbsp;Gabriela Zuquim ,&nbsp;Henrik Balslev ,&nbsp;Kalle Ruokolainen ,&nbsp;Hanna Tuomisto","doi":"10.1016/j.revpalbo.2025.105443","DOIUrl":"10.1016/j.revpalbo.2025.105443","url":null,"abstract":"<div><div>Humans have domesticated and used palms in tropical forests for millennia. The extent to which past human palm use affects modern tropical systems remains relatively unexplored due to lack of a good fossil record. However, palms produce an array of phytoliths, which are siliceous cell structures that preserve well in the soil even after the organic plant material has decayed. Phytoliths vary in morphology and can be identified to group level and sometimes even to species. We analyzed if palm phytolith assemblages sampled from the soil reflect palm species compositions and abundances in 63 western Amazonian transects. Principal coordinate analysis (PCoA) and Mantel tests showed that palm communities and phytolith assemblages had similar turnover patterns. Negative binomial generalized linear models indicated that the abundances of nine of the 13 common palm genera were significantly related to a combination of soil cation concentrations, grass phytolith percentages, and palm phytolith PCoA axis scores. These results suggest that phytoliths have potential as quantitative indicators of changes in palm abundances in paleoecological and archaeological reconstructions.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"344 ","pages":"Article 105443"},"PeriodicalIF":1.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145060580","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":"New palynological data from the Devonian of southern Poland (Siewierz area, Podleśna quarry)","authors":"Marcelina Kondas,&nbsp;Paweł Filipiak","doi":"10.1016/j.revpalbo.2025.105457","DOIUrl":"10.1016/j.revpalbo.2025.105457","url":null,"abstract":"<div><div>The sedimentary succession exposed in the Podleśna quarry near Siewierz (southern Poland) yielded the first confirmed occurrence of Devonian palynomorphs from this locality. Based on the composition of the miospore assemblages—the most abundant palynomorph group—the deposits have been assigned to the EX2 to possibly EX3 subzones of the EX Miospore Zone, corresponding to the <em>rhenanus</em>/<em>varcus</em> to <em>latifossatus</em>/<em>semialternans</em> conodont zones (Givetian). Preliminary palynofacies analysis suggests deposition in a proximal shelf setting.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"344 ","pages":"Article 105457"},"PeriodicalIF":1.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145320026","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":"Effect of steep climate gradient on palynological assemblages on the Arabian part of the Tethys shore in two Carboniferous-Permian ice age time slices","authors":"Michael H. Stephenson ,&nbsp;Shuzhong Shen ,&nbsp;Junxuan Fan ,&nbsp;Linshu Hu ,&nbsp;Jin Qi","doi":"10.1016/j.revpalbo.2025.105448","DOIUrl":"10.1016/j.revpalbo.2025.105448","url":null,"abstract":"<div><div>Palaeoclimate modelling of two time slices, Serpukhovian to Bashkirian (Carboniferous), and Gzhelian to early Sakmarian (latest Carboniferous to Early Permian), indicates marked changes in palynological assemblages from 30°S and 50°S across the Gondwana and Tethys margin. Both time slices indicate a distinct cold climate assemblage dominated by cheilocardioid spores, while a warmer climate with mean annual temperature above 19 °C appears to encourage the growth of plants that produced Euramerican coal belt spores such as <em>Vestispora fenestrata</em> and <em>Reticulatisporites polygonalis</em>. It is possible that the parent plants of cingulicamerate spores such as <em>Lundbladispora</em> spp., though tolerant of cold conditions, were not tolerant of the coldest conditions (for example below 0 °C).</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"344 ","pages":"Article 105448"},"PeriodicalIF":1.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145095657","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":"Three new exquisitely preserved haplolepideous mosses from the mid-Cretaceous of Kachin, Myanmar","authors":"Ya Li ,&nbsp;Yong-Dong Wang ,&nbsp;Peng-Cheng Wu ,&nbsp;Lwin Mar Saing ,&nbsp;Chun-Xiang Li ,&nbsp;Qiang Wang","doi":"10.1016/j.revpalbo.2025.105459","DOIUrl":"10.1016/j.revpalbo.2025.105459","url":null,"abstract":"<div><div>Dicranidae (haplolepideous mosses) are the second-largest group of mosses with about 4000 species, and thus the radiation of Dicranidae is considered to be a major event in the evolutionary process of mosses. However, the present fossil record of Dicranidae is rather limited for understanding the early diversification of this successful and speciose lineage. Here, we describe three new exquisitely preserved haplolepideous mosses as <em>Calymperites heinrichsianus</em>, <em>Calymperites marginatus</em> and <em>Calymperites striatus</em> based on 32 whole gametophytes and 10 gametophyte fragments embedded in 16 pieces of Kachin amber from the mid-Cretaceous of northern Myanmar. The three fossil species all exhibit a combination of characters, including lanceolate leaves with a simple costa, clasping leaf bases with large rectangular hyaline cells (cancellinae), and subquadrate to short rectangular, smooth to slightly bulging upper lamina cells. These characters are indicative of Calymperaceae, a monophyletic family that is placed in the core Dicranales. Considering the mid-Cretaceous age and morphological differences to extant species, the present three species of <em>Calymperites</em> probably represent stem group members of Calymperaceae. They, along with previously reported three species of <em>Calymperites</em> (Calymperaceae) and <em>Ditrichites aristatus</em> (Ditrichaceae or Dicranaceae), provide palaeobotanical evidence for the early diversification of Dicranidae in the mid-Cretaceous Kachin amber forest of northern Myanmar. Palaeoecological habitat reconstruction indicates that <em>Calymperites</em> from Kachin amber has obviously ecological niche differentiation.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"344 ","pages":"Article 105459"},"PeriodicalIF":1.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145465570","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":"First records of Pinuxylon and Xenoxylon wood from the Cretaceous in Shandong Province, Northeast China","authors":"Ruiying Hao ,&nbsp;Zhanchun Zou ,&nbsp;Zikun Jiang ,&nbsp;Kemin Xu ,&nbsp;Ning Tian ,&nbsp;Zhenguo Ning ,&nbsp;Aowei Xie ,&nbsp;Xiao Shi ,&nbsp;Yongdong Wang ,&nbsp;Guohua Xu ,&nbsp;Fuxia Zhang","doi":"10.1016/j.revpalbo.2025.105465","DOIUrl":"10.1016/j.revpalbo.2025.105465","url":null,"abstract":"<div><div>Early Cretaceous petrified wood demonstrates remarkably high diversity across both northern and southern phytoprovinces in China. In recent years, an increasing number of fossil wood discoveries have been made in Cretaceous deposits throughout China, while current research on Early Cretaceous fossil wood remains primarily focused on the northeastern region. However, Cretaceous fossil wood occurrences remain exceptionally scarce in Shandong Province compared with other regions. This study reports the first discovery of well-preserved fossil wood from the Lower Cretaceous in the Jiaolai Basin, represented by two taxa, i.e., <em>Pinuxylon shandongense</em> sp. nov. and <em>Xenoxylon latiporosum</em> (Cramer) Gothan. Notably, <em>P. shandongense</em> sp. nov. constitutes the earliest fossil record of the genus <em>Pinuxylon</em> reported. Phenetic analysis of anatomical characters indicates that this new species is most closely related phylogenetically to <em>P. pinastroides</em> (Kraus) Stockmans et willière. Furthermore, anatomical examination of <em>Xenoxylon latiporosum</em> combined with growth-ring analysis of <em>Keteleerioxylon shandongense</em> indicates that the Jiaolai Basin experienced a seasonal climate during the Early Cretaceous, characterized by localized humid zones within a predominantly arid regime. These discoveries markedly expand the fossil records of <em>Xenoxylon</em> and <em>Pinuxylon</em>, providing unprecedented clarity regarding floristic assemblages in the ecotone between northern and southern phytoprovinces. They yield critical insights into both Mesozoic wood evolution and the paleobiogeography of Cretaceous fossil woods in East Asia. Furthermore, our reconstruction of Early Cretaceous paleoenvironments in the Jiaolai Basin, based on growth-ring analysis, establishes fundamental evidence for Cretaceous paleoclimatic reconstructions in this region.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"344 ","pages":"Article 105465"},"PeriodicalIF":1.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145465569","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 new Coniopteris (Dicksoniaceae) from the Middle Jurassic of the Baojishan Basin, Gansu, China, with discussion on its heteromorphic pinnule characteristics","authors":"Lan-Xing Wei,&nbsp;Cun-Lin Xin,&nbsp;Zhi -Peng Jiao,&nbsp;Fang-Fang Zhang,&nbsp;Hong Li","doi":"10.1016/j.revpalbo.2025.105467","DOIUrl":"10.1016/j.revpalbo.2025.105467","url":null,"abstract":"<div><div><em>Coniopteris</em> (Dicksoniaceae) is a species-rich and diverse Mesozoic fern genus. Based on well-preserved material from the Middle Jurassic Yaojie Formation in the Baojishan Basin, Gansu, China, we combine macromorphology with microstructural characters to describe a new species—<em>Coniopteris baojishanensis</em> Wei et Xin, sp. nov. The frond is lanceolate and at least bipinnate; the ultimate pinnae bear a basal pair of heteromorphic pinnules; the rachis bears a conspicuous longitudinal ridge. Sterile pinnules are elongate-ovate; fertile pinnules are slightly contracted, ovate. A preliminary analysis of the evolutionary distribution of heteromorphic pinnules in <em>Coniopteris</em> indicates first appearance in the Early Jurassic, a peak in the Middle Jurassic, and marked decline by the Cretaceous. We interpret heteromorphic pinnules as an adaptation to moist, low-light understory conditions: by enlarging area or increasing the degree of dissection, they increase light capture and enhance photosynthetic efficiency, thereby improving competitive ability within the community. This study enriches the Chinese fossil record of <em>Coniopteris</em> and provides new clues to the formation of its heteromorphic pinnules.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"344 ","pages":"Article 105467"},"PeriodicalIF":1.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145519742","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":"Ecological response of organic walled microplankton associations to the final stages of the Late Paleozoic Ice Age (LPIA) in Paraná Basin, southwestern Gondwana","authors":"Rafael R. Bender ,&nbsp;Cristina M. Félix ,&nbsp;Paulo A. Souza ,&nbsp;Tainara Caroline de Aguiar Medeiros ,&nbsp;Daiana R. Boardman ,&nbsp;Ana Karina Scomazzon","doi":"10.1016/j.revpalbo.2025.105456","DOIUrl":"10.1016/j.revpalbo.2025.105456","url":null,"abstract":"<div><div>The stratigraphic distribution of organic walled microphytoplanktonic taxa throughout different climatic phases from the Upper Paleozoic of Paraná Basin is evaluated herein. Newly analyzed palynological samples reveal the presence of the genera <em>Botryococcus</em>, <em>Tasmanites</em>, <em>Leiosphaeridia</em> and <em>Deusilites</em> along the interval encompassed by the Pennsylvanian <em>Crucisaccites monoletus</em> Zone (CmZ) and the Gzhelian-Artinskian <em>Vittatina costabilis</em> Zone (VcZ), corresponding to the upper Itararé Group and the final stages of the Late Paleozoic Ice Age (LPIA). Numeric data and general composition of the palynomorph associations are consistent with a proximal deltaic-marine environment under glacial influence with great influx of continental organic particles. A detailed review of the available literature shows that some organisms such as prasinophytes and certain acritarch groups (genera <em>Deusilites</em> and <em>Navifusa</em>) are more abundant within the glacial and terminal glacial stages of the basin, becoming less prominent in the post-glacial phase and finally disappearing almost completely in the subsequent strata. Contrastingly, most records of algae related to Zygnemaphyceae and Chlorococcales originate from the post-glacial stage, suggesting closer affinity for coastal environments of fresh/brackish waters, whereas the acritarch genera <em>Micrhystridium</em> and <em>Veryhachium</em> proliferate from the base of the Palermo Formation, in units interpreted as epicontinental seas. The available information indicates that the presence of algal elements in palynological successions from this interval is mainly controlled by paleogeography, climate, onshore-offshore trends, salinity and paleoenvironmental conditions. As a consequence, it is inferred that lithostratigraphic units from the Upper Paleozoic of Paraná Basin and other chronocorrelated units across Gondwana are characterized by particular microphytoplanktonic signatures.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"344 ","pages":"Article 105456"},"PeriodicalIF":1.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145415788","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":"Indicative and discriminative potential of soil-surface phytolith assemblages for land-use types on the northeastern Tibetan Plateau","authors":"Dongxu Li ,&nbsp;Lina Song ,&nbsp;Dehui Li ,&nbsp;Nannan Wang ,&nbsp;Xianyong Cao","doi":"10.1016/j.revpalbo.2025.105453","DOIUrl":"10.1016/j.revpalbo.2025.105453","url":null,"abstract":"<div><div>Clarifying the relationship between soil-surface phytolith assemblages and land-use types in valley agricultural areas is essential for reconstructing the origins and spread of agriculture on the Tibetan Plateau. However, research on modern phytoliths related to wheat (<em>Triticum sativa L.</em>) and barley (<em>Hordeum vulgare L.</em>) cultivation at high elevations remain limited. In this study, we analysed 40 farmland and 17 natural vegetation soil-surface samples from the Hehuang Valley, a typical valley agricultural area. The results show that phytolith assemblages generally reflect the cold, arid climate of the region but also vary across land-use types. Wheat farmland can be distinguished from natural vegetation, with ELONGATE DENDRITIC ≥<!--> <!-->1.0% as a diagnostic indicator for wheat and CRENATE &lt;<!--> <!-->3.8% for natural vegetation. These findings highlight the potential of phytolith analysis for land-use reconstruction and establish an operational framework and threshold standards for identifying wheat farmland in the Hehuang Valley.</div></div>","PeriodicalId":54488,"journal":{"name":"Review of Palaeobotany and Palynology","volume":"344 ","pages":"Article 105453"},"PeriodicalIF":1.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145320027","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}