Cretaceous Research最新文献

{"title":"Late Cretaceous-Early Palaeocene Lepisosteiform and Siluriform fish remains from Central India: palaeoecological, palaeoenvironmental and palaeobiogeographical implications","authors":"Omkar Verma ,&nbsp;Ashu Khosla ,&nbsp;Spencer G. Lucas","doi":"10.1016/j.cretres.2024.105915","DOIUrl":"10.1016/j.cretres.2024.105915","url":null,"abstract":"<div><p>Late Cretaceous-Early Palaeocene geo-climatic events played an important role in the diversification of the modern ichthyofauna. Lepisosteiformes and Siluriformes are two diverse clades of freshwater fishes, poorly known from India in this time interval. Their fossil record documents their early diversification and can be used to reconstruct palaeobiogeographic relationships among the continental masses during the Late Mesozoic. Indeed, the Cretaceous-Palaeocene is an exceptional time span for the Indian plate as it underwent a primary spatial reorganisation and remarkable geologic and climatic changes with extensive outpouring of the Deccan basaltic magma. Field investigation in a Deccan sedimentary sequence at Kisalpuri, Central India has yielded new, rich, and taxonomically important fossil material of Lepisosteiformes (<em>Lepisosteus indicus,</em> Lepisosteidae) and Siluriformes (Siluriformes indet.), which significantly improves their Cretaceous-Palaeocene fossil record from the Indian subcontinent. These fish lived in freshwater environments such as large rivers, lakes, and coastal areas. Their presence along with other aquatic biotic elements suggests that the Kisalpuri was an abundant aquatic ecosystem rich in nutrients, which attracted a diverse range of organisms to live together with fish. Biostratigraphically, these fishes first emerged in the Late Cretaceous-Early Palaeocene on the Indian subcontinent, and later, they spread to other parts of subcontinent throughout the Cenozoic. Their earliest intra-continental distribution was controlled by the palaeodrainage network influenced by the volcanic flows of the Deccan traps. Their inter-continental palaeobiogeographic distribution was broadly controlled by the sequential break-up of Pangaea. There appear to be close palaeobiogeographic linkages between South America and India during the Cretaceous-Palaeocene era based on the similarity between the Lepisosteiformes and Siluriformes remnants from India and those reported from the Upper Cretaceous of the Bauru Group, Brazil.</p></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"161 ","pages":"Article 105915"},"PeriodicalIF":2.1,"publicationDate":"2024-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141025949","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":"High-resolution UAV maps of the Gobi Desert provide new insights into the Upper Cretaceous of Mongolia","authors":"F. Fanti ,&nbsp;L. Cantelli ,&nbsp;P.J. Currie ,&nbsp;G.F. Funston ,&nbsp;N. Cenni ,&nbsp;S. Catellani ,&nbsp;T. Chinzorig ,&nbsp;K.H. Tsogtbaatar ,&nbsp;R. Barsbold","doi":"10.1016/j.cretres.2024.105916","DOIUrl":"https://doi.org/10.1016/j.cretres.2024.105916","url":null,"abstract":"<div><p>The Gobi Desert of southern Mongolia is home to an incredibly rich record of dinosaurs and other vertebrate fossils from the latest Cretaceous Period. Together, more than a dozen sites in several basins have produced one of the richest palaeofaunas known from this interval anywhere in the world. Most of this diversity has been recovered from the fluvial deposits of the Nemegt Formation. Despite historic and ongoing research in southern Mongolia, accurate maps and geological data for the main fossil sites are still lacking, limiting our ability to investigate how local palaeoecological dynamics influenced Nemegt taxa, their geographic distribution, and their evolutionary patterns. One of these sites, Guriliin Tsav, has produced more than a hundred significant fossil specimens to date, but still remains one of the lesser known Nemegt localities. In part this is because many expeditions have instead focused on the nearby Bügiin Tsav, one of the largest and richest localities for the Nemegt Formation. To address this gap, a project was initiated in 2018 to produce a high-resolution topographic map of Guriliin Tsav using Unmanned Aerial Vehicles (UAV), and consequently, to plot the geographic and stratigraphic distributions of palaeontological resources on this map. In so doing, we also collected stratigraphic and taphonomic data from the area, allowing for the first detailed palaeoecological interpretation of Guriliin Tsav and a comparison with other localities of southern Mongolia. Here we present the results of this project, and also discuss new topographic and stratigraphic data from Bügiin Tsav. This sheds new light into the temporal and geographic distribution of vertebrate taxa in the latest Cretaceous of Mongolia.</p></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"161 ","pages":"Article 105916"},"PeriodicalIF":2.1,"publicationDate":"2024-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0195667124000892/pdfft?md5=143bf10116c9f58c1191888d452b7d4e&pid=1-s2.0-S0195667124000892-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140947684","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":"Tectorotularia hexagona (Polychaeta, Serpulidae) co-existing with Rhynchostreon suborbiculatum (Bivalvia, Gryphaeidae) in a river-dominated marginal marine environment of Cenomanian–Turonian age in Slovakia: An example of Late Cretaceous amensalism or competition?","authors":"Jakub Rantuch ,&nbsp;Tomáš Kočí ,&nbsp;Manfred Jäger ,&nbsp;Lenka Váchová","doi":"10.1016/j.cretres.2024.105913","DOIUrl":"https://doi.org/10.1016/j.cretres.2024.105913","url":null,"abstract":"<div><p>The mutual relationship and co-occurrence of the tube-dwelling polychaete <em>Tectorotularia hexagona</em> and the oyster <em>Rhynchostreon suborbiculatum</em> in an instance of fluctuating marginal marine environment, represented by the Orlové Sandstone in the Western Carpathians (Pieniny Klippen Belt), is recorded. As a consequence of climate change during the Cenomanian and early Turonian, changes over time in key ecological factors (e.g., decrease in freshwater inflow and increase in temperature and water mass salinity) led to critical trophic alterations in the marginal marine system studied. The environmental change from polyhaline/eutrophic to euhaline/lower nutrient conditions led to a reduction in the pioneer palaeopopulation of <em>R. suborbiculatum</em>, and <em>Tectorotularia hexagona</em> and other stenohaline marine recliners took over the ecological niches originally occupied by the oyster. In this respect, the relationship between <em>T. hexagona</em> and <em>R. suborbiculatum</em> may be considered a Late Cretaceous example of competition between two groups of sessile-benthic recliners. In the present work, two different tube morphologies of <em>T. hexagona</em> from Hôrka are described, and the tube microstructure of this species is documented for the first time. In addition, the material from Hôrka is compared with that from the type locality, Essen in Germany, and ‘<em>Hamulus</em>’ <em>hexagonus</em> and <em>Tectorotularia</em> ‘<em>westfalica</em>’ are considered to constitute one and the same species. The wider ecological and systematic context of this serpulid species is discussed as well.</p></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"161 ","pages":"Article 105913"},"PeriodicalIF":2.1,"publicationDate":"2024-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140950276","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 oospecies of Spheroolithidae from the Upper Cretaceous in the Laiyang Basin, Shandong Province, China","authors":"Qing He ,&nbsp;Shutong Li ,&nbsp;Hanghai Zheng ,&nbsp;Shukang Zhang ,&nbsp;Zhengdong Wang","doi":"10.1016/j.cretres.2024.105911","DOIUrl":"10.1016/j.cretres.2024.105911","url":null,"abstract":"<div><p>Five deformed dinosaur eggs are newly discovered from the Upper Cretaceous Jiangjunding Formation in the Laiyang Basin, Shandong Province, China. A new oospecies of Spheroolithidae, <em>Spheroolithus phacelus</em>, was erected based on the spheroid eggs and the developed cone-shaped eggshell unit assemblages. Radial sections of <em>S. phacelus</em> show the inner cone-shaped eggshell units, the middle columnar eggshell units and the outer bush-like eggshell units. Numerous cone-shaped eggshell unit assemblages and large gaps between them are developed in the inner part, columnar eggshell units and small pores emerge in the middle part, and branches of eggshell units appear in the outermost part, forming bush-like microstructures. Spheroolithidae is a typical oofamily of East Asia consisting of <em>Spheroolithus spheroides</em>, <em>S</em>. <em>chiangchiungtingensis</em>, <em>S</em>. <em>quantouensis</em>, <em>S</em>. oosp. and <em>Paraspheroolithus irenensis</em>, which mainly distributed in the Upper Cretaceous of China, South Korea, Japan and Mongolia. The discovery of <em>S. phacelus</em> provides new fossil materials of oogenus <em>Spheroolithus</em> in Spheroolithidae and expands the palaeogeographic distribution of Spheroolithidae in East Asia, which may be eggs of hadrosauroid. The age of these deformed dinosaur eggs could be presumed to be the middle Late Cretaceous (Coniacian–Campanian).</p></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"161 ","pages":"Article 105911"},"PeriodicalIF":2.1,"publicationDate":"2024-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140777772","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":"Large theropod teeth from the Upper Cretaceous of Guangdong Province, Southern China","authors":"Lida Xing ,&nbsp;Zaoqun Liang ,&nbsp;Ke Zhang ,&nbsp;Donghao Wang ,&nbsp;Xianqiu Zhang ,&nbsp;W. Scott Persons IV ,&nbsp;Zheng Ren ,&nbsp;Zhicong Liang ,&nbsp;Minyi Xian ,&nbsp;Qiang Zeng","doi":"10.1016/j.cretres.2024.105914","DOIUrl":"10.1016/j.cretres.2024.105914","url":null,"abstract":"<div><p>Cretaceous dinosaur and other terrestrial tetrapod fossils are common throughout Guangdong Province (southern China), with the greatest documented concentrations in the Heyuan and Nanxiong basins and the Ganzhou area. Further south, the Sanshui Basin has a continuous Lower Cretaceous-Eocene sequence. Within the Sanshui Basin, abundant ostracod and mollusk fossils have been documented from the Upper Cretaceous sediments, but vertebrae fossils are rare. Here we report four isolated teeth collected from the Maastrichtian of the Sanshui Basin. Although fragmentary, the teeth can be confidently referred to the Tyrannosauroidea. These teeth constitute the first record of large theropods in southern Guangdong and are also the southernmost record of tyrannosauroids in China.</p></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"161 ","pages":"Article 105914"},"PeriodicalIF":2.1,"publicationDate":"2024-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140756512","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":"Jurassic–Cretaceous boundary in the Dedina section (Serbian Carpathians): Effects of remagnetization on magnetostratigraphy","authors":"Šimon Kdýr ,&nbsp;Tiiu Elbra ,&nbsp;Petr Pruner ,&nbsp;Hakan Ucar ,&nbsp;Petr Schnabl ,&nbsp;Dragoman Rabrenović","doi":"10.1016/j.cretres.2024.105912","DOIUrl":"10.1016/j.cretres.2024.105912","url":null,"abstract":"<div><p>The Upper Tithonian to Lower Berriasian carbonate sequence of the Getic Nappe system was studied near Golubac (eastern Serbia) using rock-magnetic and paleomagnetic methods to verify the age of the magnetization and to correlate magnetostratigraphy with biostratigraphy. A major part of the Dedina section shows the presence of authigenic goethite, hematite and magnetite as carriers of remagnetization. The youngest overprint, residing in goethite, sometimes carrying up to 90 % of natural remanent magnetization, was probably received after 18 Ma. The remagnetization residing in hematite and magnetite, attributed to the late Early Cretaceous collision, was obtained during long normal polarity Chron C34 (118–82 Ma). The mean direction implies a clockwise post-remagnetization rotation by about 57°. The normal (<em>D</em>_<em>n</em>) and reverse (<em>E</em>_<em>r</em>) polarity components, heavily affected by the chemo-remanent magnetization overprint, can be tentatively interpreted in terms of polarity zones. Thus, the obtained data enabled a preliminary identification of M17r to M19n.2n magnetochrons. The correlation of magnetostratigraphy with biostratigraphy of the Dedina section contributes to the stratigraphic framework necessary for the definition of the Berriasian Global Boundary Stratotype Section and Point.</p></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"161 ","pages":"Article 105912"},"PeriodicalIF":2.1,"publicationDate":"2024-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140788365","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 ootype of putative dromaeosaurid eggs from the Upper Cretaceous of southern China","authors":"Rui Wu ,&nbsp;Kecheng Niu ,&nbsp;Shukang Zhang ,&nbsp;Yu Xue ,&nbsp;Fenglu Han","doi":"10.1016/j.cretres.2024.105909","DOIUrl":"10.1016/j.cretres.2024.105909","url":null,"abstract":"<div><p>Non-avian maniraptoran eggs are abundant in the Upper Cretaceous of China. Previous studies mainly focused on oviraptorosaur and troodontid eggs which can be classified into the oofamilies Elongatoolithidae and Prismatoolithidae, respectively. Here we report a new possible ootype of dromaeosaurid dinosaur recovered from the Lianhe Formation of the Ganzhou Basin. The new ootaxon, <em>Gannanoolithus yingliangi</em> oogen. et oosp. nov., is remarkable for its symmetrically elliptic shape and two structural layers with an abrupt and straight boundary. It shares a similar elongated shape, interlocked eggshell units, and an angusticanaliculate pore system with those of <em>Deinonychus</em> eggshell-like maniraptoran ootaxa reported from North America, Europe, and East Asia. The new phylogenetic analysis suggests the monophyly of dromaeosaurid and oviraptorosaurian eggs, and troodontid eggs are closely related to bird eggs. Paired eggs of <em>Gannanoolithus</em> might indicate that dromaeosaurid dinosaurs also have paired functional oviducts like oviraptorosaurs and troodontids. In addition, the porosity and EBSD analyses support that these eggs in the mound nests are buried.</p></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"161 ","pages":"Article 105909"},"PeriodicalIF":2.1,"publicationDate":"2024-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140755611","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":"Early Cretaceous bivalves of the Romualdo Formation, Araripe Basin, northeastern Brazil","authors":"Vitor B. Guerrini ,&nbsp;Suzana A. Matos ,&nbsp;Franz T. Fürsich ,&nbsp;Mariza G. Rodrigues ,&nbsp;Filipe G. Varejão ,&nbsp;Lucas V. Warren ,&nbsp;Mario L. Assine ,&nbsp;Marcello G. Simões","doi":"10.1016/j.cretres.2024.105910","DOIUrl":"10.1016/j.cretres.2024.105910","url":null,"abstract":"<div><p>The fossil-rich Romualdo Formation (late Aptian/early Albian), Araripe Basin, northeastern Brazil, contains world-renowned Fossillagerstätten characterized by exceptionally preserved fossils. Macroinvertebrates in this formation are primarily represented by mollusks, echinoids, and decapod crustaceans. Mollusk shells are abundant in certain stratigraphic intervals, forming coquinas or shell pavements. Despite recent advances in our understanding of the taxonomy of certain groups, comprehensive taxonomic studies are lacking for almost the entire bivalve fauna. Therefore, a detailed taxonomic analysis is presented here. The described bivalves include four new genera (<em>Araripenomia</em>, <em>Ciceromya</em>, <em>Inversatella</em>, <em>Australoeocallista</em>), and six new species (<em>Araripenomia infirma</em>, <em>Inversatella cearensis</em>, <em>Ciceromya edentulosa</em>, <em>Australoeocallista juazeiroi</em>, <em>Legumen kaririense</em>, and <em>Corbulomima delicata</em>), in addition to <em>Musculus maroimensis</em>, <em>Crassatella maroimensis</em>, “<em>Myrtea</em>” sp. and “<em>Tellina</em>” sp. This bivalve fauna mainly consists of cosmopolitan and endemic brackish/marine genera, with Tethyan affinities. The fauna is not homogeneously distributed in the sedimentary succession of the Romualdo Formation, but is constrained to the third order highstand systems tract. Bivalves recorded from muddy facies are strongly dominated by infaunal and semi-infaunal suspension feeders. Assemblages of the sand-dominated facies, with dense shell accumulations of semi-infaunal to epifaunal byssate and infaunal suspension feeders, were formed under shallow, higher energy conditions. Despite the degree of generic endemicity, the mytilids, anomiids, crassateliids, astartids, tellinids, and corbulids are related to the bivalve fauna of the Early Cretaceous Riachuelo Formation of the Sergipe-Alagoas Basin, as previously demonstrated for the bakevelliids and echinoids. Indeed, the Romualdo bivalve fauna is, in part, a modified and impoverished brackish/marine fauna of the Riachuelo Formation.</p></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"161 ","pages":"Article 105910"},"PeriodicalIF":2.1,"publicationDate":"2024-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140758209","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 fossiliferous sites from the mid-Cretaceous Tendrara dome (High Plateaus, Morocco): biostratigraphical, paleoenvironmental and paleogeographical implications","authors":"Hamid Haddoumi ,&nbsp;Guillaume Guinot ,&nbsp;Rachid Chennouf ,&nbsp;Jemaa Amakrane ,&nbsp;Monique Vianey-Liaud ,&nbsp;Abdelhamid Rossi ,&nbsp;Sidi Mohamed Mamoun ,&nbsp;Rodolphe Tabuce ,&nbsp;André Charrière","doi":"10.1016/j.cretres.2024.105908","DOIUrl":"10.1016/j.cretres.2024.105908","url":null,"abstract":"<div><p>Sedimentological and stratigraphical studies in the Cretaceous series of the Tendrara dome led to the discovery of fossiliferous levels in the pre-Cenomanian and Cenomanian deposits, providing significant biostratigraphic, paleoenvironmental, and paleogeographic results. In the SW part of the Tendrara dome, the predominantly terrigenous deposits at the base of the pre-Cenomanian (Dekkar 1 Formation) yielded dinosaur eggshell fragments and charophytes, in particular Clavatoraceans, pointing to the Barremian-Aptian. Above this unit, two beds with fish remains were discovered in the Dekkar 2 Formation and at the base of the Dekkar 3 Formation, respectively. To the NE of the Tendrara dome, a fossiliferous site with diversified benthic fauna and abundant fish remains was discovered in a thin marly unit unconformably overlying the Middle Jurassic basement. Elasmobranch micro-remains indicate a Cenomanian age for this unit. The SW-NE correlations indicate a marked thickness reduction and lateral facies variations, implying a strong asymmetry in the Cretaceous paleogeography of the dome. The first continental and lagoonal basins of the Barremian-Aptian and Albian?-Cenomanian are located in the southern part of the Tendrara dome. The Cenomanian transgression, initiated from the south, gradually covered the dome, depositing reduced coastal plain elasmobranch-rich facies in its northern part. The Tendrara dome constituted a paleogeographic barrier, limiting the first transgressions of the Cenomanian sea. This paleostructure is part of an emerged area (Idrissides High) located between the Tethyan Ocean and the Saharan epicontinental sea.</p></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"161 ","pages":"Article 105908"},"PeriodicalIF":2.1,"publicationDate":"2024-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140786889","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":"Cockroach Clypeblattula panda gen. et sp. n. (Blattaria: Blattulidae) from the Lower Cretaceous Laiyang Formation of China","authors":"Jiaming Zhang ,&nbsp;Lei Chen ,&nbsp;Cihang Luo","doi":"10.1016/j.cretres.2024.105907","DOIUrl":"https://doi.org/10.1016/j.cretres.2024.105907","url":null,"abstract":"<div><p>Cockroach <em>Clypeblattula panda</em> gen. et sp. n. is described from the Lower Cretaceous Laiyang Formation of Shandong Province, China based on a specimen with forewing and pronotum well-preserved. It is characterized by ovoid pronotum with two trapezoid dark stripes, forewing with intercalary space in R with colouration, A with six simple veins, and sparse cross-veins. It is closely related to the Early Cretaceous <em>Pravdupovediac</em> according to colouration of intercalary space in R, but they can be distinguished mainly based on the different wing shapes and the existence of dark macula. The differences between <em>Clypeblattula</em> gen. n., <em>Ocelloblattula</em>, <em>Pseudomantina</em>, <em>Habroblattula</em> and <em>Laiyangia</em> are also briefly discussed. The new genus is another indigenous cockroach of Blattulidae.</p></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"160 ","pages":"Article 105907"},"PeriodicalIF":2.1,"publicationDate":"2024-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140638724","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}