PalaeoworldPub Date : 2024-09-12DOI: 10.1016/j.palwor.2024.09.001
Lei Yang , Ben Yang , Yu-Ning Yang , Michael Steiner
{"title":"Biostratigraphy of the early Cambrian small skeletal fossils from the Niuniuzhai section of southern Sichuan in China","authors":"Lei Yang , Ben Yang , Yu-Ning Yang , Michael Steiner","doi":"10.1016/j.palwor.2024.09.001","DOIUrl":"10.1016/j.palwor.2024.09.001","url":null,"abstract":"<div><div>The Niuniuzhai section in Leibo County, southern Sichuan, China, is part of the western carbonate platform of the Yangtze Block. The section is crucial for correlating early Cambrian successions in the eastern Yunnan and southern Sichuan areas. A comprehensive biostratigraphic analysis of small skeletal fossils (SSFs) from this section identifies three SSF assemblages: (1) the oldest from an interval of uncertain age affinity in the middle and upper Dahai Member of the Zhujiaqing Formation; (2) the <em>Watsonella crosbyi</em> Assemblage Zone (Zone III) in the upper Dahai Member of the Zhujiaqing Formation; and (3) the <em>Sinosachites flabelliformis</em>–<em>Tannuolina zhangwentangi</em> Assemblage Zone (Zone IV) in the middle Shiyantou Formation. These SSF assemblage zones in the Niuniuzhai section correlate well with sections from eastern Yunnan and southern Sichuan, indicating a coherent Terreneuvian succession on the the Yangtze Platform and in other continents.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 2","pages":"Article 100877"},"PeriodicalIF":1.7,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142262897","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}
PalaeoworldPub Date : 2024-08-30DOI: 10.1016/j.palwor.2024.100876
Yan Liu , Qiao-Er Ying , Qi-Jia Li , Ning Zhou , Cao Zhang , Yu-Jin Zhang , Xiao Tan , Fei Liang
{"title":"Ginkgoites manchurica from the Lower Cretaceous Shahezi Formation of Liaoning, China, and its palaeoclimate implications","authors":"Yan Liu , Qiao-Er Ying , Qi-Jia Li , Ning Zhou , Cao Zhang , Yu-Jin Zhang , Xiao Tan , Fei Liang","doi":"10.1016/j.palwor.2024.100876","DOIUrl":"10.1016/j.palwor.2024.100876","url":null,"abstract":"<div><div>The extreme greenhouse climate during the period of oceanic anoxic events (OAEs) in the Cretaceous is recognized based on marine stratigraphy, whereas the palaeoclimate remains poorly understood based on the terrestrial record due to the limitations of quantitative methods. The nearest living equivalent method, such as using the stomatal index of <em>Ginkgo</em> as a proxy, provides insight into reconstructing the terrestrial palaeoclimate during OAEs. However, due to the lack of well-preserved fossils with epidermal features and applicable quantitative methods, there are still controversies regarding the classification and nomenclature of species in the genus <em>Ginkgoites</em>, which have been assigned to <em>Baiera</em>, <em>Ginkgo</em>, or <em>Ginkgoites</em>. Here, we report well-preserved <em>Ginkgoites</em> fossil leaves from the Lower Cretaceous Shahezi Formation in Changtu County, Liaoning Province, Northeast China. The fossil dry leaf mass per area (LMA) was estimated as a quantitative morphological and ecological proxy. The LMA results of 192–241 g/m<sup>2</sup> for different specimens are very close, suggesting that these homonyms should be assigned to the same species. Therefore, combining the detailed epidermal features and a quantitative morphological proxy (LMA), we summarized and amended the previously described fossils into <em>Ginkgoites manchurica</em>. Moreover, using the stomatal index of <em>G</em>. <em>manchurica</em>, the palaeo-atmospheric CO<sub>2</sub> concentration was calculated at 1270 ppmv using the Barclay SI-<em>p</em>CO<sub>2</sub> curve during the middle to late Aptian, indicating a typical greenhouse climate, which may be associated with the OAE global temperature increase event.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 2","pages":"Article 100876"},"PeriodicalIF":1.7,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142219066","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}
PalaeoworldPub Date : 2024-08-26DOI: 10.1016/j.palwor.2024.100875
Lei Zhang , Shan Chang , Xia Wang , Marie-Béatrice Forel , Qing-Lai Feng , Wei-Hong He , Taniel Danelian , Martial Caridroit , Qian Liu , Xing-Lin Li
{"title":"Albaillellarian (radiolaria) assemblages across the Guadalupian–Lopingian boundary (Permian) and their environmental implications","authors":"Lei Zhang , Shan Chang , Xia Wang , Marie-Béatrice Forel , Qing-Lai Feng , Wei-Hong He , Taniel Danelian , Martial Caridroit , Qian Liu , Xing-Lin Li","doi":"10.1016/j.palwor.2024.100875","DOIUrl":"10.1016/j.palwor.2024.100875","url":null,"abstract":"<div><div>It remains unclear how radiolarian lineages adapted to the changing environments through the Guadalupian–Lopingian boundary (G-LB) interval. In this study, a well-preserved radiolarian fauna was obtained from silty cherts and siltstones deposited throughout the G-LB of the Sanpaoling, Yutouling, and Xiaqianling sections, located in Qinzhou City, Guangxi, China. Two genera of Albaillellaria, including ten species of <em>Albaillella</em> and two <em>Neoalbaillella</em> species/morphotypes, are presented in this study. This assemblage is correlated with the <em>Follicucullus charveti</em> and <em>Albaillella cavitata</em> Interval Zone. Based on the material obtained near the G-LB, the taxonomic value of pores on the test of <em>Albaillella</em> species is here evaluated. This research documents a relatively significant morphological variation of the Albaillellarian lineages and an evolutionary reversal in <em>Albaillella</em> through the G-LB. Based on the combination of the faunal and evolutionary response in the studied area, we suggest that the G-LB witnessed rapidly changing environmental conditions, imposing adaptive pressure on radiolarians, at least on the deep-dwelling Albaillellarians.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 2","pages":"Article 100875"},"PeriodicalIF":1.7,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142219067","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}
PalaeoworldPub Date : 2024-08-26DOI: 10.1016/j.palwor.2024.100874
Shi-Qi Wang , Xue-Ping Ji , Chun-Xia Zhang , Yi Wang , Guang-Ya Chen , Zhi-Guang Hu , Hui-Fang Yang
{"title":"A new dichobunoid artiodactyl from the middle Eocene of Yunnan, China","authors":"Shi-Qi Wang , Xue-Ping Ji , Chun-Xia Zhang , Yi Wang , Guang-Ya Chen , Zhi-Guang Hu , Hui-Fang Yang","doi":"10.1016/j.palwor.2024.100874","DOIUrl":"10.1016/j.palwor.2024.100874","url":null,"abstract":"<div><div>Dichobunoids were the most basal artiodactyl group, widely distributed throughout the Eocene of Eurasia and North America, but were rarely reported from southern China. In this paper, we report the first dichobunoid artiodactyl, <em>Shilinhyus chowi</em> n. gen. n. sp., from the middle Eocene of Lunan Basin (Shilin County), China. <em>Shilinhyus</em> is characterized by its relatively large size, bunoselenodont tooth morphology with a highly developed p4 metaconid, and a mesially interrupted paracristid formed by a weak premetacristid and a strong preprotocristid. This morphology distinguishes <em>Shilinhyus</em> from all known dichobunoid artiodactyls. Within dichobunoids, <em>Shilinhyus</em> resembles <em>Pakkokuhyus</em> from the Eocene of Southeast Asia and “<em>Gobiohyus</em>” <em>yuanchuensis</em> from the Eocene of Shanxi, China, by the relatively large size, the absence of the paraconid, and the well-development of the hypolophid. However, <em>Shilinhyus</em> still differs from <em>Pakkokuhyus</em> and “<em>Gobiohyus</em>” <em>yuanchuensis</em> in the complete interruption of the paracristid and in the alignment of the entoconid and hypoconid as well as the protoconid and metaconiod. <em>Shilinhyus</em>, <em>Pakkokuhyus</em>, and “<em>Gobiohyus</em>” <em>yuanchuensis</em> might have derived from the Eocene <em>Gobiohyus</em> from northern China, constituting a distinct group. The discovery of <em>Shilinhyus chowi</em> enhances our understanding of the early evolution of dichobunoid artiodactyls, especially in southern China.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 2","pages":"Article 100874"},"PeriodicalIF":1.7,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142219077","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}
PalaeoworldPub Date : 2024-08-19DOI: 10.1016/j.palwor.2024.100873
Kazım Halaçlar , Berna Alpagut , Serdar Mayda , Tao Deng
{"title":"A new systematic study on Hystrix findings from eastern Aegean area","authors":"Kazım Halaçlar , Berna Alpagut , Serdar Mayda , Tao Deng","doi":"10.1016/j.palwor.2024.100873","DOIUrl":"10.1016/j.palwor.2024.100873","url":null,"abstract":"<div><div>This study introduces <em>Hystrix aegeanensis</em> n. sp., a new late Miocene (MN 12) porcupine species from Samos, Greece, and Karaağaç, Türkiye. This represents the fifth record of late Miocene <em>Hystrix</em> from Europe and Asia Minor. <em>H</em>. <em>aegeanensis</em> n. sp. exhibits a unique occlusal outline and pattern compared to those of all other late Miocene <em>Hystrix</em> species. This study further clarifies the systematic divergence among late Miocene <em>Hystrix</em> species based on occlusal outlines and patterns. The first group, including <em>H</em>. <em>parvae</em>, <em>H</em>. <em>primigenia</em>, <em>H</em>. <em>gansuensis</em>, <em>H</em>. <em>brevirostra</em>, and <em>H</em>. <em>lufengensis</em>, exhibits a simple occlusal pattern and an oval/square occlusal outline. In contrast, the second group, comprising <em>H</em>. <em>aegeanensis</em> n. sp., <em>H</em>. <em>kayae</em>, and <em>H</em>. <em>aryanensis</em>, displays a more complex occlusal pattern and a rectangular occlusal outline on their upper cheek teeth.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 2","pages":"Article 100873"},"PeriodicalIF":1.7,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142219068","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}
PalaeoworldPub Date : 2024-07-26DOI: 10.1016/j.palwor.2024.07.004
Si-Yao Ye , Kui Wu , Zuo-Yu Sun , P. Martin Sander , Adun Samathi , Yuan-Yuan Sun , Cheng Ji , Varavudh Suteethorn , Jun Liu
{"title":"Conodonts suggest a late Spathian (late Early Triassic) age for Thaisaurus chonglakmanii (Reptilia: Ichthyosauromorpha) from Thailand","authors":"Si-Yao Ye , Kui Wu , Zuo-Yu Sun , P. Martin Sander , Adun Samathi , Yuan-Yuan Sun , Cheng Ji , Varavudh Suteethorn , Jun Liu","doi":"10.1016/j.palwor.2024.07.004","DOIUrl":"10.1016/j.palwor.2024.07.004","url":null,"abstract":"<div><div>The timing of the emergence of marine reptiles following the Permian–Triassic mass extinction is crucial for studying the recovery of marine ecosystems in the Triassic. Conodonts, key index fossils in the Triassic, are widely used to date the marine reptiles, especially in the Early Triassic. <em>Triassospathodus anhuinensis</em> is a conodont species originally discovered in the upper Spathian of South China, but lacked a comprehensive description, leading to misidentifications and confusion in previous research. Here, we reevaluated <em>Tr</em>. <em>anhuinensis</em> and summarized its morphological characteristics and spatial and temporal distribution based on a review of the literature. We then critically evaluated the age of the primitive ichthyosaur <em>Thaisaurus chonglakmanii</em> from Thailand based on the updated knowledge of <em>Tr</em>. <em>anhuinensis</em>. We sampled the Khao Thong section where <em>T</em>. <em>chonglakmanii</em> was found for conodont study. <em>Tr</em>. <em>anhuinensis</em> elements were obtained from the bed where <em>T</em>. <em>chonglakmanii</em> was collected and also in the bed five metres above the <em>T</em>. <em>chonglakmanii</em> fossil horizon, suggesting a late Spathian age for <em>T</em>. <em>chonglakmanii</em>. A late Spathian age for <em>T</em>. <em>chonglakmanii</em> questions the hypothesis of Thailand as the place of origin of ichthyosaurs in the late Induan or early Spathain.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 2","pages":"Article 100872"},"PeriodicalIF":1.7,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141841189","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}
PalaeoworldPub Date : 2024-07-26DOI: 10.1016/j.palwor.2024.07.003
Sariye Duygu Durak , Mehmet Serkan Akkiraz , Nazire Özgen-Erdem , Atike Nazik , Fuzuli Yağmurlu , Derya Sinanoğlu
{"title":"Lutetian–Bartonian (Middle Eocene) micropalaeontology, biostratigraphy and palaeoecology of the Mengen Coal Basin, Northwest Türkiye (Turkey)","authors":"Sariye Duygu Durak , Mehmet Serkan Akkiraz , Nazire Özgen-Erdem , Atike Nazik , Fuzuli Yağmurlu , Derya Sinanoğlu","doi":"10.1016/j.palwor.2024.07.003","DOIUrl":"10.1016/j.palwor.2024.07.003","url":null,"abstract":"<div><div>This study focuses on the upper Lutetian–lower Bartonian Tokmaklar Formation in the Mengen Basin of Northwest Türkiye (Turkey), examining various aspects such as biostratigraphy, palaeoecology, and isotope data (δ<sup>18</sup>O and δ<sup>13</sup>C), providing insights into the geological history and environmental conditions during this interval. Moreover, the study incorporates coal petrography on four samples to explore a potential correlation between the coalification process and the preservation of palynomorphs. The formation is informally divided into two distinct categories: a coal-bearing sequence positioned at the base of the formation and a coal-free sequence above it. However due to dense vegetation and soil cover in the area, the availability of suitable outcrops for measured sections and obtaining samples is severely limited. Therefore, we relied on drilling data from Turkish Coal Enterprises (TCE) for the purpose of coal exploration, as well as two partial sections (Ender and Çorak) from underground mining. Microapalaeontological evidences involving benthic foraminiferans, ostracods, and palynomorphs, along with isotope data (δ<sup>18</sup>O and δ<sup>13</sup>C), suggest that the Tokmaklar Formation was deposited as a result of a local transgressive process during the late Lutetian–early Bartonian. Furthermore, palynological data, particularly the existence of mangroves such as <em>Nypa</em>, lepidocaryoid palm and <em>Acrostichum aureum</em>, coupled with quantitative palaeoclimate analysis, the negative δ<sup>18</sup>O values, and the lower δ<sup>13</sup>C values indicate a warm, probably tropical climate under high rainfall.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 2","pages":"Article 100871"},"PeriodicalIF":1.7,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141845076","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}
PalaeoworldPub Date : 2024-07-17DOI: 10.1016/j.palwor.2024.07.001
James R. Thomka , Thomas E. Bantel , Donald L. Bissett , Drew A. Billups
{"title":"Large diploporitan thecal attachment structures on diploporitan thecae: An uncommon encrustation relationship involving stalked echinoderms from the Silurian of the Cincinnati Arch region, eastern midcontinental USA","authors":"James R. Thomka , Thomas E. Bantel , Donald L. Bissett , Drew A. Billups","doi":"10.1016/j.palwor.2024.07.001","DOIUrl":"10.1016/j.palwor.2024.07.001","url":null,"abstract":"<div><div>Holocystitid diploporitans (Echinodermata) are abundant within the middle Silurian (Wenlock: Sheinwoodian) Massie Formation of southeastern Indiana, USA. Diploporitan thecae are commonly encrusted by a variety of organisms, including the attachment structures of crinoids; however, no diploporitan aboral thecal attachments have previously been described in detail as encrusters on co-occurring diploporitan thecae. Herein, we describe thecae of <em>Holocystites scutellatus</em> that are encrusted by large discoidal attachment structures attributable to undetermined holocystitid diploporitans. The thecal attachment structures are discoidal, multi-plated, pore-bearing, and characterized by circular central depressions floored by flat platforms — a morphology that is identical to that of diploporitan attachments described from a laterally continuous hardground surface at the same locality. These encrusted specimens are significant because they demonstrate that (1) encrusting diploporitans were capable of developing identical aboral attachment morphologies when encountering both hardgrounds and sufficiently large bioclasts in softgrounds; and (2) encrusted diploporitan thecae were capable of remaining articulated long enough and in a sufficiently stable position to serve as substrata for large thecal attachments. Taken collectively, holocystitid diploporitans were characterized by greater aboral morphological plasticity and resistance to disarticulation than generally recognized.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 2","pages":"Article 100851"},"PeriodicalIF":1.7,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141781744","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}
PalaeoworldPub Date : 2024-07-17DOI: 10.1016/j.palwor.2024.06.008
Lin-Na Zhang , Sha-Sha Sun , Zong-Yuan Sun , Ming-Feng Lu , Qing Chen
{"title":"Biogeographic dynamics of graptolites during the Late Ordovician Mass Extinction in South China","authors":"Lin-Na Zhang , Sha-Sha Sun , Zong-Yuan Sun , Ming-Feng Lu , Qing Chen","doi":"10.1016/j.palwor.2024.06.008","DOIUrl":"10.1016/j.palwor.2024.06.008","url":null,"abstract":"<div><div>Studying the temporal and spatial distributions and dynamics of fossils is crucial for understanding macroevolution processes in geological history. Biodiversity data provide an overview of faunal changes during extinction events, but it cannot differentiate the impact of extinction events on different species. Biogeographic study complements these data by offering more detailed insights into evolutionary patterns. A dataset of 704 graptolite occurrence records for the Late Ordovician Mass Extinction (LOME) was compiled from 60 localities in South China. The geographic distributions of 26 species across four graptolite biochrons (from late Katian to Hirnantian) were quantitatively reconstructed using ArcGIS. Two types of geographic range indexes, including convex hull areas and maximum distribution distances, were calculated for each species in each time slice. Based on the variations in the geographic ranges, the graptolites can be divided into three types. The geographic ranges of the first type shrank before the extinction, that of the second type expanded before the extinction but shrank during the extinction, and that of the third type expanded during the extinction. The first two types include Diplograptina species; and the third of Neograptina species. The study revealed that the extinction event affected all diplograptid graptolite species, as evidenced by the rate of decrease in geographic ranges. Interestingly, the impact of the major extinction appeared to be uniform across all graptolite species, irrespective of their initial geographic range size. The distribution centers of the graptolite species remained relatively stable and predominantly surrounded the center of the sea during the LOME. The substantial reduction in the geographic ranges of diplograptid species might be due to the global factors rather than local sea level decline.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 2","pages":"Article 100868"},"PeriodicalIF":1.7,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141782008","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}
PalaeoworldPub Date : 2024-07-17DOI: 10.1016/j.palwor.2024.06.001
Yan-Bin Zhu , Ya Li , Jian-Ping Zhang , Yong-Dong Wang , Nikolaos Zouros
{"title":"A new species of Pseudotsuga (Pinaceae) from the lower Miocene of Lesvos, Greece, and its palaeogeographical and palaeoclimatic implications","authors":"Yan-Bin Zhu , Ya Li , Jian-Ping Zhang , Yong-Dong Wang , Nikolaos Zouros","doi":"10.1016/j.palwor.2024.06.001","DOIUrl":"10.1016/j.palwor.2024.06.001","url":null,"abstract":"<div><div><em>Pseudotsug</em>a Carrière is commonly known as Douglas-fir, a minor genus attributed to Pinaceae of conifer. Four extant species are included in this genus, with dispersed distribution in East Asia and western North America. <em>Pseudotsuga</em> possesses a number of fossil records of needled leaves, seed cones, and seeds. Nevertheless, few reliable fossil wood of this genus has been specifically investigated. Here, we describe some anatomically well-preserved petrified fossil wood from the lower Miocene of Lesvos Island, Greece, as <em>Pseudotsuga lesvosensis</em> n. sp. The studied fossil wood remains are characterized by the presence of normal axial and radial resin canals, piceoid cross-field pitting, along with distinctive helical thickenings in cell walls consistent with <em>Pseudotsuga</em>. The present fossil conifer further enriches the species diversity of the Miocene Petrified Forest in Lesvos. The first report of <em>Pseudotsuga lesvosensis</em> from the southern Europe in this study extends the tempo-spatial distribution patterns of <em>Pseudotsuga</em> and contributes to further understanding of its origin and evolutionary history. The occurrence of <em>P</em>. <em>lesvosensis</em> fossil wood, as well as other palaeontological macrofloral composition evidence, indicates a humid warm temperate to subtropical climatic condition during the early Miocene within the Lesvos, which differs significantly from the current Mediterranean climate.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 2","pages":"Article 100852"},"PeriodicalIF":1.7,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141781787","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}