Palaeoworld最新文献

{"title":"Late Cretaceous sauropod dinosaur undertracks in floodplain deposits of Sanfranciscana Basin, Brazil, and their paleoecological significance","authors":"Luciano Alessandretti ,&nbsp;Lucas Veríssimo Warren ,&nbsp;Heitor Francischini ,&nbsp;Caio César Rangel ,&nbsp;Beatriz Christofoletti ,&nbsp;Leandro Gustavo da Silva Albino ,&nbsp;Leonardo Cardoso Moura ,&nbsp;Daniel Sedorko","doi":"10.1016/j.palwor.2026.201078","DOIUrl":"10.1016/j.palwor.2026.201078","url":null,"abstract":"<div><div>Dinosaur undertracks are described in the Upper Cretaceous Capacete Formation of the Sanfranciscana Basin, southeastern Brazil. These vertebrate traces are preserved in fine-grained deposits deposited in muddy and vegetated floodplain settings associated with a meandering river system active during the Campanian–Maastrichtian. Based on sedimentologic data, morphostructural analysis, and comparisons with analogous Cretaceous ichnofossils, we interpret these structures as undertracks produced by sauropods. Notably, although other occurrences of footprints and undertracks are known in younger units, no dinosaur fossils have yet been recovered in the Upper Cretaceous of the Sanfranciscana Basin. However, they are widespread in chronocorrelated units from the Bauru Basin, deposited by fluvial distributary and lacustrine systems under arid to semi-arid climatic conditions. During the Late Cretaceous, these two basins were putatively separated due to the uplift of the Alto Paranaíba High (APH) in the central part of the South American Platform. Our new sedimentologic and paleontologic data from the Sanfranciscana Basin, combined with regional paleogeography and paleoclimate reconstructions, suggest that a rain shadow effect played a key role in influencing precipitation patterns in the northern side of the APH. In this scenario of orographic rainfall, sauropod populations likely migrated from the Bauru Basin in the Southern Hot Arid Belt to the Sanfranciscana Basin in the Equatorial Humid Belt, possibly driven by droughts and shortages of food and water. This inferred migratory pathway likely involved a lowland-upland-lowland journey of dinosaur herds through the APH, eventually leading them to the humid floodplains of the Sanfranciscana Basin, where resources such as food and water were more abundant.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"35 3","pages":"Article 201078"},"PeriodicalIF":1.7,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116668","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 cicadomorphan family (Insecta, Hemiptera) trapped in mid-Cretaceous Burmese amber","authors":"Jun Chen ,&nbsp;Wen-Qian Wang ,&nbsp;Yan Zheng ,&nbsp;Guang-Jin Wei ,&nbsp;Guang-Ying Ren","doi":"10.1016/j.palwor.2026.201070","DOIUrl":"10.1016/j.palwor.2026.201070","url":null,"abstract":"<div><div>The Cicadomorpha is a hemipteran phytophagous insect suborder with high palaeo-diversity and abundant extant representatives. As one of the three modern cicadomorphan superfamilies, the Cercopoidea (froghoppers) is inferred to have originated in the Triassic and has three extinct families recorded in the Jurassic and Cretaceous. We herein erect a new cercopoid family, Myanmalidae Chen, n. fam. along with <em>Myanmala zireni</em> Chen, n. gen. n. sp. on the basis of a male adult insect fossil trapped in mid-Cretaceous Kachin amber from northern Myanmar. The new family bears a series of body structures and wing characteristics different from its known con-superfamilials, such as lateral ocelli almost touching coronal posterior margin, thin crown anteriorly extending distinctly beyond postclypeus, and tegminal basal cell greatly shortened. This new family shares some features with the primitive families Procercopidae and Sinoalidae, and also displays some derived traits similar to modern cercopoids. Our new finds suggest froghoppers have a complex evolutionary history in the Mesozoic, with high morphological disparity.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"35 3","pages":"Article 201070"},"PeriodicalIF":1.7,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116669","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":"Opisoma menchikoffi Dubar, 1948: New occurrences from the Lower Jurassic of the High Atlas, Morocco and Tethyan Himalaya, southern Xizang (Tibet), China","authors":"Fu-Lin Li ,&nbsp;Kai Ye ,&nbsp;Xin Rao ,&nbsp;Zhong Han ,&nbsp;Cheng-Gang Wang ,&nbsp;Xiong-Wei Zeng ,&nbsp;Long Wang ,&nbsp;Hao Liu ,&nbsp;Zong-Xin Wang ,&nbsp;Fa-Fu Wu ,&nbsp;Kun Liang ,&nbsp;Wen-Kun Qie","doi":"10.1016/j.palwor.2025.201055","DOIUrl":"10.1016/j.palwor.2025.201055","url":null,"abstract":"<div><div>The alatoform bivalve <em>Opisoma</em> is characterized by highly antero-posteriorly compressed shells with broad lateral wings formed by pronounced shell wall folds, and a robust, ventrally elongate hinge plate. As a key component of the <em>Lithiotis</em>-fauna, Early Jurassic species of <em>Opisoma</em> thrived in tropical shallow-marine environments along the Tethyan and Panthalassan coasts during the Sinemurian to early Toarcian interval. This study documents a new occurrence of well-preserved <em>Opisoma menchikoffi</em> specimens from the Pliensbachian Bou Dahar limestones of the eastern High Atlas Mountains, Morocco. Numerous natural transverse sections through articulated shells at various growth stages, along with natural longitudinal sections of disarticulated shells provide comprehensive morphological insights, enabling a taxonomic revision of this previously poorly understood species. The dentition of <em>O</em>. <em>menchikoffi</em> is redefined, with the right valve possesses three cardinal teeth and the left valve bears two. Furthermore, a single occurrence of the <em>Lithiotis</em>-fauna from the upper Pliensbachian–lower Toarcian Pupuga Formation in Zanda County (Tethyan Himalaya), originally attributed to <em>Lithiotis</em> by <span><span>Li et al. (2013)</span></span>, is reappraised and assigned to <em>O</em>. <em>menchikoffi</em>, <em>Lithioperna scutata</em>, and megalodontids. <em>O</em>. <em>menchikoffi</em> is now documented from the Pliensbachian to lower Toarcian of Morocco and Algeria in the western Tethys, as well as from the upper Pliensbachian to lower Toarcian of southern Xizang (Tibet) in the eastern Tethys. Its broad trans-Tethyan distribution constitutes a critical biostratigraphic marker that facilitates precise correlation of Early Jurassic sequences between the eastern and western Tethyan realms.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"35 2","pages":"Article 201055"},"PeriodicalIF":1.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190747","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":"Stromatoporoids from the Upper Ordovician (Katian) Koumenzi Formation of North Qilian Mountains, China","authors":"Juwan Jeon ,&nbsp;Yu-Chen Zhang ,&nbsp;Stephen Kershaw ,&nbsp;Ren-Bin Zhan","doi":"10.1016/j.palwor.2025.201051","DOIUrl":"10.1016/j.palwor.2025.201051","url":null,"abstract":"&lt;div&gt;&lt;div&gt;Stromatoporoid faunas in the peri-Gondwanan regions during the Katian of the Late Ordovician exhibit a greater diversity of taxa compared with those from other contemporaneous continents and terranes. Geographical separation due to the numerous microplates comprising peri-Gondwana was a potential driver of this high diversity, but stromatoporoid faunas in many of these microplates have not been studied in detail because of their remote present-day locations. In this study, we report 12 genera and 16 species of stromatoporoids from the Upper Ordovician (Katian) Koumenzi Formation, exposed in the upper reaches of the Tianbao River, Qilian County, Qinghai Province, Northwest China, representing a unique occurrence in the North Qilian Mountains. This fauna includes &lt;em&gt;Cystostroma inconstans&lt;/em&gt; Jeon n. sp., &lt;em&gt;Pseudostylodictyon poshanense&lt;/em&gt; &lt;span&gt;&lt;span&gt;Ozaki, 1938&lt;/span&gt;&lt;/span&gt;, &lt;em&gt;Labechia conglomerata&lt;/em&gt; &lt;span&gt;&lt;span&gt;Dong and Wang, 1984&lt;/span&gt;&lt;/span&gt;, &lt;em&gt;Labechia shanhsiensis&lt;/em&gt; Yabe and Sugiyama, 1930 (&lt;span&gt;&lt;span&gt;Yabe and Sugiyama, 1930a&lt;/span&gt;&lt;/span&gt;), &lt;em&gt;Labechia&lt;/em&gt; sp., &lt;em&gt;Labechiella gondwanense&lt;/em&gt; Jeon in &lt;span&gt;&lt;span&gt;Jeon et al., 2022a&lt;/span&gt;&lt;/span&gt;, &lt;em&gt;Radiostroma astroqilianus&lt;/em&gt; Jeon and Zhan n. sp., &lt;em&gt;Aulacera arbuscula&lt;/em&gt; Jeon n. sp., &lt;em&gt;Sinabeatricea crassicentra&lt;/em&gt; Jeon n. sp., &lt;em&gt;Lophiostroma leptolamellatum&lt;/em&gt; Jeon n. sp., &lt;em&gt;Clathrodictyon idense&lt;/em&gt; &lt;span&gt;&lt;span&gt;Webby and Banks, 1976&lt;/span&gt;&lt;/span&gt;, &lt;em&gt;Clathrodictyon&lt;/em&gt; sp. cf. &lt;em&gt;Cl&lt;/em&gt;. &lt;em&gt;mammillatum&lt;/em&gt; (&lt;span&gt;&lt;span&gt;Schmidt, 1858&lt;/span&gt;&lt;/span&gt;), &lt;em&gt;Ecclimadictyon tiewadianensis&lt;/em&gt; (&lt;span&gt;&lt;span&gt;Jiang et al., 2011&lt;/span&gt;&lt;/span&gt;), &lt;em&gt;Ecclimadictyon nestori&lt;/em&gt; &lt;span&gt;&lt;span&gt;Webby, 1969&lt;/span&gt;&lt;/span&gt;, &lt;em&gt;Plexodictyon qilianense&lt;/em&gt; Jeon n. sp., and &lt;em&gt;Simplexodictyon uniplexum&lt;/em&gt; Jeon n. sp. In comparison with other peri-Gondwana regions and other adjacent areas, this fauna consists of a relatively high proportion of endemic taxa and some pandemic taxa, with species-level affinities most closely linking the North Qilian Mountains to North China, and to a lesser extent, South China. The occurrence of genera such as &lt;em&gt;Radiostroma&lt;/em&gt;, &lt;em&gt;Plexodictyon&lt;/em&gt;, and &lt;em&gt;Simplexodictyon&lt;/em&gt;, previously restricted to Baltica and North China extends their known palaeogeographical ranges. The stromatoporoid assemblage of the North Qilian Mountains represents a transitional fauna between the Ordovician and Silurian, characterised by persistent labechiid dominance alongside the appearance of clathrodictyids and stromatoporellids, and the presence of both long-ranging Ordovician taxa and morphologically advanced genera, reflecting diversification trends also seen in the contemporaneous North China assemblage. Relatively high endemism of this stromatoporoid fauna is attributed to the island arc volcanic setting during the Late Ordovician, emphasizing the role of island arc setting in stromatoporoid diversification during the Ordovician.","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"35 2","pages":"Article 201051"},"PeriodicalIF":1.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190752","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":"Paleoecological insights from coprolites and their inclusions from the Permian Rio do Rasto Formation, Brazil","authors":"Larissa P. Catafesta ,&nbsp;Paula Dentzien-Dias ,&nbsp;Francisco J.S. Calaça ,&nbsp;Eliseu V. Dias ,&nbsp;Weronika Łaska ,&nbsp;Kenneth De Baets ,&nbsp;Heitor Francischini","doi":"10.1016/j.palwor.2025.201060","DOIUrl":"10.1016/j.palwor.2025.201060","url":null,"abstract":"<div><div>Coprolites provide valuable insights into paleoecological relationships, such as predation and parasitism, as well as taphonomic and paleoenvironmental conditions. However, few studies have focused on coprolites from the Rio do Rasto Formation, despite their abundance in this formation. Here we analyze and describe 97 coprolites from 11 sites within the Rio do Rasto Formation (middle/upper Permian) of Paraná Basin (southern Brazil). External and internal features were examined to classify the material into four morphotypes: heteropolar (12%), amphipolar (10%), indeterminate spiral (40%), and non-spiral (38%). Alimentary inclusions, such as fish scales, teeth, bone fragments, plants, and an insect wing, were identified in nearly all specimens. Additionally, microorganisms and parasites were preserved within the fecal matrix, including bacilli bacteria, actinomycete biofilm, fungal hyphae and spores, Nostocales and Chroococcales cyanobacteria, and helminth eggs. The bacteria and fungi are interpreted to have originated from the intestinal tract of the producer before extrusion, whereas the cyanobacteria were most likely ingested from the water where these animals lived in. The new occurrence of likely cestode eggs provides additional direct evidence of parasitism and corroborates the existence of this relationship from at least the Permian. The phosphatic composition of the coprolites, combined with bacterial and fungal activity, was likely crucial for preserving more delicate organic remains (e.g., plant material and an insect wing) and organisms (e.g., parasites). These findings enhance our understanding of the producer diet, paleoecological interactions, and the microenvironment within the feces.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"35 2","pages":"Article 201060"},"PeriodicalIF":1.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146191471","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 fossil moths (Lepidoptera: Micropterigidae) in Middle Cretaceous Kachin amber from Myanmar","authors":"Ning Han ,&nbsp;Xin-Ru Luo ,&nbsp;Jia-Jia Wang ,&nbsp;Chungkun Shih ,&nbsp;Wei-Ting Zhang ,&nbsp;Dong Ren","doi":"10.1016/j.palwor.2025.201061","DOIUrl":"10.1016/j.palwor.2025.201061","url":null,"abstract":"<div><div>A new genus, <em>Falcipalpus</em> Han, Zhang and Ren n. gen., with two new species, <em>Falcipalpus rimosus</em> Han, Zhang and Ren n. gen. n. sp. and <em>F</em>. <em>parallelus</em> Han, Zhang and Ren n. gen. n. sp. (Lepidoptera: Micropterigidae), is erected based on three well-preserved specimens from Middle Cretaceous Kachin amber. The new genus is diagnosed by swollen, barrel-shaped antennal scape without indentation and the absence of a free R vein in the hind wing, indicating affinity with the Australian lineage. A key to the genera of Micropterigidae fossil records is provided. <em>Parasabatinca</em> <span><span>Whalley, 1978</span></span> and <em>Palaeosabatinca</em> <span><span>Kozlov, 1988</span></span> may belong to Heterobathmiidae rather than Micropterigidae.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"35 2","pages":"Article 201061"},"PeriodicalIF":1.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190743","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":"Preliminary investigation of Paleocene warming events in the lower Zongpu Formation at the Chaqiela section, Gamba, southern Xizang (Tibet)","authors":"Pei-Yue Fang ,&nbsp;Yue Sun ,&nbsp;Qing-Hai Zhang ,&nbsp;You-Hua Zhu ,&nbsp;Hui Luo","doi":"10.1016/j.palwor.2025.201062","DOIUrl":"10.1016/j.palwor.2025.201062","url":null,"abstract":"<div><div>The Paleocene epoch was characterized by short-lived warming events (hyperthermals), including the Latest Danian Event (LDE) and the Early Late Paleocene Event (ELPE), which provide critical analogues for understanding modern climate change. However, the global distribution and environmental impacts of these events remain poorly constrained, particularly in southern Xizang (Tibet), a key region within the eastern Neo-Tethys. This study presents larger benthic foraminifera (LBF) biostratigraphy and bulk carbonate carbon isotope data from the lower Zongpu Formation at the Chaqiela section in Gamba, southern Xizang. LBF assemblages constrain the studied interval to Shallow Benthic Zone 2 (SBZ 2) to SBZ 3. Carbon isotope records reveal two negative excursions within these zones, interpreted as the LDE (within SBZ 2) and the ELPE (within SBZ 3). These findings confirm the global nature of both events, highlighting their significance in the evolution of Paleocene hyperthermals and advancing our understanding of their spatial distribution.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"35 2","pages":"Article 201062"},"PeriodicalIF":1.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190745","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":"Cephalopods from the Upper Ordovician of the North Qilian Mountains region: Implications for palaeobiogeography","authors":"Jia-Qi Song ,&nbsp;Xiang Fang ,&nbsp;Yu-Chen Zhang ,&nbsp;Xin Wei ,&nbsp;Ya-Tao Zhang ,&nbsp;Yi Wang ,&nbsp;Ren-Bin Zhan","doi":"10.1016/j.palwor.2025.201048","DOIUrl":"10.1016/j.palwor.2025.201048","url":null,"abstract":"<div><div>The North Qilian Mountains region is an important component of the Proto-Tethys Archipelagic Palaeocean. The Koumenzi Formation (Katian, Upper Ordovician) in the region yields a significant number of Ordovician fossils, of which cephalopods have rarely been systematically studied and recorded. Herein, a moderately preserved cephalopod collection from the Koumenzi Formation is presented from the North Qilian Mountains, Qilian Orogenic Belt. This fossil assemblage, obtained from the section near the upper reaches of the Tianbao River, Qilian County, Qinghai Province, consists of <em>Anaspyroceras</em> sp., <em>Geisonocerina</em>? sp., <em>Paradnatoceras nyalamense</em>, as well as some unnamed oncoceratoid and orthoceratoid cephalopods. Furthermore, quantitative palaeoecological analyses based on global occurrences, uncover notable provincialism of Katian cephalopods. Two cephalopod provinces related to palaeolatitude are recognised by cluster analysis and weighted network analysis. Global oceanic currents might have been responsible for the pattern of the cephalopod faunal composition and distribution in the Katian.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"35 2","pages":"Article 201048"},"PeriodicalIF":1.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190751","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":"Additions to the Jurassic mecopteran assemblages from the Ordos and Jiyuan basins, north-central China","authors":"Le-Le Xu ,&nbsp;Alexey S. Bashkuev ,&nbsp;Xin-Neng Lian ,&nbsp;Xiang-Dong Zhao","doi":"10.1016/j.palwor.2025.201053","DOIUrl":"10.1016/j.palwor.2025.201053","url":null,"abstract":"<div><div>Jurassic scorpionflies (Mecoptera) in the Ordos Basin are represented by sparse records and a few described species from the lower Middle Jurassic Yan’an Formation and the overlying Zhiluo Formation (upper Middle to lower Upper Jurassic). In the adjacent Jiyuan Basin, a more diverse mecopteran fauna is known from the upper Middle Jurassic (Callovian) Yangshuzhuang Formation at Anyao, Jiyuan City in Henan Province. Additional records of Mecoptera from Yan’an and Yangshuzhuang formations are reported herein, including two new species, <em>Itaphlebia yulinensis</em> n. sp. (Nannochoristidae) and <em>Vitimopsyche picta</em> n. sp. (Mesopsychidae), as well as two potentially new species of Orthophlebiidae and Protorthophlebiidae described in open nomenclature and pending new material. The mecopteran fauna in both formations is composed of typical Jurassic taxa, including species very similar to those from the well-known Middle Jurassic Yanliao Biota in Daohugou. The current problems of classification of fossil panorpoid scorpionflies are discussed.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"35 2","pages":"Article 201053"},"PeriodicalIF":1.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146191511","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 record of Soergelia (Bovidae, Artiodactyla, Mammalia) from East Asia: Implications for its taxonomy, evolution, and dispersal history","authors":"Wei-Peng Bai ,&nbsp;Shi-Qi Wang","doi":"10.1016/j.palwor.2025.201047","DOIUrl":"10.1016/j.palwor.2025.201047","url":null,"abstract":"<div><div><em>Soergelia</em>, known as Soergel’s ox, is an extinct bovid genus, placed under Caprini of Bovidae. It is characterized by a pair of far apart positioned and anteriorly growing horncores, and was widely distributed across Europe, Siberia of Russia, as well as North America during the Early Pleistocene to the Middle Pleistocene. However, the rare finds hindered the taxonomic and evolutionary studies of the genus. Here, we established and described a new species of the genus, <em>S</em>. <em>longdanensis</em> n. sp., based on the material discovered from Longdan, Gansu Province, dated as early Early Pleistocene (2.595–2.137 Ma). It is not only the first record of the genus in East Asia, but also the earliest record in the world. The new species shares a series of common characters with the genus; however, it has some distinct characters, differing from the other known species, such as the horncore tip bending upward, slow tapering rate, etc. Additionally, we briefly reviewed the known <em>Soergelia</em> species, and considered that the taxonomic status of <em>S</em>. <em>brigittae</em> still needs to be determined, and <em>S</em>. <em>intermedia</em> and <em>Soergelia</em> cf. <em>minor</em> (Dmanisi) might be a synonym. Furthermore, we estimated the evolutionary and dispersal trends of the genus, suggesting that it probably originated from a <em>Kabulicornis</em>-like form, which dispersed westward and eastward during the Late Pliocene, and evolved into <em>S</em>. <em>longdanensis</em>, <em>S</em>. <em>minor</em> and <em>Soergelia</em> cf. <em>minor</em> (<em>S</em>. <em>intermedia</em>?), respectively. The former species dispersed northward into Siberia of Russia during the middle Early Pleistocene, and evolved into <em>S</em>. <em>elisabethae</em>. This species dispersed westward into Europe during the early Middle Pleistocene, and eastward into North America evolving into <em>S</em>. <em>mayfieldi</em> at approximately 0.8 Ma.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"35 2","pages":"Article 201047"},"PeriodicalIF":1.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190748","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}