Cretaceous Research最新文献

{"title":"A remarkable psyllomorph family from Cretaceous Burmese amber, Miralidae stat. nov. (= Dinglidae syn. nov.; Hemiptera: Sternorrhyncha)","authors":"Grigory A. Ivanov ,&nbsp;Dmitry D. Vorontsov ,&nbsp;Dmitry E. Shcherbakov","doi":"10.1016/j.cretres.2024.106069","DOIUrl":"10.1016/j.cretres.2024.106069","url":null,"abstract":"<div><div>Cretaceous resins have preserved a remarkable diversity of sternorrhynchans. Burmese amber, formed in the mid-Cretaceous tropics, contains more numerous and diverse Psyllomorpha than all other fossil localities of the period together. The genus <em>Dingla</em> Szwedo et Drohojowska, 2020, previously placed into a separate family and infraorder, turned out to be similar in all essential characters to <em>Mirala</em> Burckhardt et Poinar, 2019 and <em>Burmala</em> Liu et al., 2021; therefore we synonymize Dinglidae Szwedo et Drohojowska, 2020 with Miralinae Shcherbakov, 2020 and raise the last subfamily to the full family status based on several unique apomorphies. A sister-group relationship between Dinglomorpha and Aleyrodomorpha was based on incorrect interpretation of characters. <em>Pictala scorpioides</em> gen. et sp. nov. from Burmese amber differs from other miralid genera by spotted forewings without pterostigma and the structure of terminalia in both sexes. In Miralidae, we discovered a long annulated labium and compound wax pores on the ventral side of the abdomen—for the first time among Hemiptera. The compound wax pores may have helped prevent miralids from sticking to the honeydew excreted. The long, flexible second labial segment, reinforced by sclerotized rings, probably allowed the protrusible length of the stylet bundle to be increased by arching the labium, as in mosquitoes.</div></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"168 ","pages":"Article 106069"},"PeriodicalIF":1.9,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143181582","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":"Cretaceous non-marine ostracod faunas of South Korea: Synthesis of taxonomy, biostratigraphy and paleoecology","authors":"Byung-Do Choi ,&nbsp;Yaqiong Wang","doi":"10.1016/j.cretres.2024.106070","DOIUrl":"10.1016/j.cretres.2024.106070","url":null,"abstract":"<div><div>This work presents the first review and comprehensive insights into ostracod faunas of the Cretaceous basins of South Korea. Based on previous literature and new data, a total of 57 species belonging to 13 genera, and nine ostracod assemblages are classified from 15 formations of six basins (Gyeongsang, Yeongdong, Hampyeong, Mokpo Volcanics, Haenam, and Sunchang basins). The ostracods of the Gyeongsang Basin can be divided into four assemblages in ascending order: Cyprideidae (Barremian–early Albian; Sindong Group), <em>Cypridea</em>–<em>Ziziphocypris</em>–<em>Lycopterocypris</em> (late Albian–Cenomanian; lower Hayang Group), <em>Lycopterocypris</em>–<em>Cypria</em> (Turonian–?Campanian; upper Hayang Group), and <em>Mongolocypris</em> (Campanian; Anpo Tuff). And, the ostracods from small basins are divided into five assemblages: <em>Candona</em> (Barremian–Aptian; lower strata of the Yeongdong Basin), <em>Lycopterocypris</em> (Aptian–Albian; Seonyudong Formation of the Yeongdong Basin), <em>Mongolocypris</em>–<em>Cypridea</em>–<em>Candona</em> (Aptian–?Cenomanian; Hampyeong Basin and Mokpo Volcanics), <em>Cypridea</em>–<em>Candona</em> (Campanian; Haenam Basin), and <em>Mongolocypris</em>–<em>Cypridea</em> (Campanian; Sunchang Basin). Most diverse taxa of the basins are the representatives of the superfamily Cypridoidea, especially the species of the genus <em>Cypridea</em>. These occurrences indicate the existence of numerous unstable lakes and temporary waterbodies. The pre-Aptian ostracod diversity is very low but peaked during the early Albian–Cenomanian. The species from the upper Albian-Campanian strata of the Gyeongsang Basin (especially <em>Ziziphocypris</em> and <em>Lycopterocypris</em> species) and the Aptian–?Cenomanian Hampyeong Basin exhibit significant similarities with ostracods from China and Mongolia, indicating active faunal exchanges and migration. The Cenomanian ostracods may represent a transitional fauna during the faunal turnover in East Asia, whereas ostracod diversity in the basins tends to decrease again during the Turonian–Campanian.</div></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"168 ","pages":"Article 106070"},"PeriodicalIF":1.9,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143180239","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":"Ostracod fauna from the Lower Cretaceous Jingchuan Formation of Ordos Basin in China and its biostratigraphic significance","authors":"Huazheng Zhu ,&nbsp;Yaqiong Wang ,&nbsp;Byung-Do Choi ,&nbsp;Yanhong Pan","doi":"10.1016/j.cretres.2024.106068","DOIUrl":"10.1016/j.cretres.2024.106068","url":null,"abstract":"<div><div>This study provides a comprehensive taxonomic analysis of ostracod species from the Jingchuan Formation in the Ordos Basin. We identified six species from four genera: <em>Cypridea koskulensis</em>, <em>Mongolocypris</em> sp., <em>Lycopterocypris debilis</em>, <em>Djungarica</em> aff. <em>saidovi</em>, and <em>Alicenula</em> spp. Our newly ostracod biostratigraphic data suggests that the Jingchuan Formation is dated to the Aptian. Moreover, our findings corroborate the hypothesis of non-marine ostracod faunal exchange in East Asia during the Early Cretaceous. This new temporal constraint also enhances our understanding of the age of Cretaceous aeolian desert sediments and red beds within the Ordos Basin.</div></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"168 ","pages":"Article 106068"},"PeriodicalIF":1.9,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143181579","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":"Geochemistry and regional stratigraphy of the Upper Cretaceous succession of central Saudi Arabia: A record of foreland basin inception on the Arabian Plate","authors":"Mohammed I. Fallatah ,&nbsp;Mahmoud Alnazghah ,&nbsp;Charles Kerans ,&nbsp;Abdulkarim Al-Hussaini","doi":"10.1016/j.cretres.2024.106059","DOIUrl":"10.1016/j.cretres.2024.106059","url":null,"abstract":"<div><div>The inception of a foreland basin on the Arabian Plate and its subsidence history during the Late Cretaceous are recorded in its forebulge and backbulge sedimentary succession. Exposures of this succession in central Saudi Arabia were examined through a multi-disciplinary approach involving sedimentology, stratigraphy, biostratigraphy, and geochemistry to document the stratigraphic evolution of the depositional system. The succession is marked at its base by deltaic, estuarine, and open-coast tidal flat siliciclastic deposits of the Majma, Qibah, and Malihah formations. These units transition upward into the Aruma Formation which represents carbonate deposition on a carbonate ramp. A Campanian–Maastrichtian age for the Aruma Formation is consistent with the appearance of a negative carbon isotope excursion marking the Campanian-Maastrichtian Boundary Event. The lithological shift from siliciclastics to shallow-water carbonates marks an overall transgression, over a regional unconformity, which is contrary to the documented long-term eustatic sea-level fall from the Turonian through Maastrichtian. This was driven by progressive increase in flexural subsidence due to ophiolite obduction over the plate's eastern and northeastern margins, forcing the Aruma Formation carbonates to onlap onto the unconformity and backstep over the forebulge of the foreland basin. The maximum flexural subsidence is manifested by the deposition of a phosphoritic condensed section in the earliest Maastrichtian, which also signals to the timing of the farthest advancement of the ophiolites over the plate's margins. This study showcases the capacity of shallow-water carbonate systems as recorders of subsidence history in foreland basins.</div></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"168 ","pages":"Article 106059"},"PeriodicalIF":1.9,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143180240","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":"Palaeoenvironmental interpretation and isotope stratigraphy of the Campanian–Danian successions in the Zagros Foreland Basin (Kabir Kuh, Lurestan, Iran)","authors":"Elham Talebi ,&nbsp;Hamzeh Mehrabi ,&nbsp;Mehdi Daraei ,&nbsp;Amin Navidtalab ,&nbsp;Aram Bayet-Goll","doi":"10.1016/j.cretres.2024.106058","DOIUrl":"10.1016/j.cretres.2024.106058","url":null,"abstract":"<div><div>The successions of the Gurpi Formation and the lower Pabdeh Formation were examined through analyses of lithology, sequence stratigraphy, stable isotope stratigraphy, and ichnofossils in the Jahangir Abad and Abhar sections of the Kabir Kuh anticline within the Lurestan Zone. Stratigraphic correlation with the well-dated Gandab section, located within the same anticline, indicates a late Campanian to early Danian age for these successions. This correlation further confirms the presence of notable carbon isotope excursions associated with the Campanian-Maastrichtian Boundary Event (CMBE) and Mid-Maastrichtian Event (MME). Field observations, along with sedimentological and paleontological analyses, suggest that the Kabir Kuh area was situated within the fore-bulge of the Zagros foreland basin during the Late Cretaceous. Changes in lithology, fossil content, and ichnofacies indicate a significant decrease in water depth at the end of the Campanian and the beginning of the Maastrichtian. This interval contains shallow marine macrofossils, including oysters (mainly Lopha), benthic foraminifers, and fossil debris traces, indicative of a high-energy environment. In contrast, shallow-water facies are not recorded within the middle and late Maastrichtian sequences. These sequences are composed of pelagic mud-dominated facies containing deep-sea ichnofossils, indicating a rapid increase in water-depth during the middle–late Maastrichtian. The observed late Campanian to early Maastrichtian shallowing is associated with the development of the Zagros fore-bulge, while the subsequent deepening and significant sediment deposition during the mid to late Maastrichtian are attributed to the subsidence of the basin. This research re-evaluates and refines the existing sequence stratigraphic and sedimentary models of the Zagros foreland basin, offering new perspectives on its geological evolution.</div></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"168 ","pages":"Article 106058"},"PeriodicalIF":1.9,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143180244","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 genus of falsiformicid wasps (Hymenoptera, Vespoidea: Falsiformicidae) with brachypterous male from middle Cretaceous Kachin amber in Myanmar","authors":"Qi Zhang ,&nbsp;Ning Jia ,&nbsp;Yizheng Li ,&nbsp;Jianxun Wang ,&nbsp;Alexander P. Rasnitsyn","doi":"10.1016/j.cretres.2024.106057","DOIUrl":"10.1016/j.cretres.2024.106057","url":null,"abstract":"<div><div>Falsiformicidae is a poorly known extinct family of aculeate wasps. It is known only as inclusions in various Cretaceous ambers. Brachypterous male <em>Falsiformix pedestris</em> Zhang and Rasnitsyn gen. et sp. nov. is described in the family Falsiformicidae based on a unique fossil from the middle Cretaceous Kachin amber. Occurrence and meaning of the male flightlessness in Hymenoptera is discussed. A combination of the flightless males with flying females occurs when mating takes place shortly after the eclosion, before adults disperse from confined space where they developed. An equally rare even if less exotic strategy with males and females both being flightless depends on the female pedestrian habits rather than on the pre-dispersal mating. Wide spatial (Angara Land, Laurussia Land and Gondwana Land) and narrow temporal distribution (Cenomanian and Turonian ages only) indicate Falsiformicidae as a possibly important stratigraphical indicator.</div></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"168 ","pages":"Article 106057"},"PeriodicalIF":1.9,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143181848","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 species Torreya with the seed-bearing structure from the Lower Cretaceous of northwestern China and its evolutionary significance","authors":"Aijing Li ,&nbsp;Baoxia Du ,&nbsp;Jing Zhang ,&nbsp;Jing Peng ,&nbsp;Yiqiao Fu ,&nbsp;Jingjing Cai ,&nbsp;Mingyang Wei ,&nbsp;Peihong Jin","doi":"10.1016/j.cretres.2024.106056","DOIUrl":"10.1016/j.cretres.2024.106056","url":null,"abstract":"<div><div>Taxaceae is a special member of the Mesozoic flora mainly found in the Northern Hemisphere. However, Taxaceae fossils did not show abundance in the Mesozoic, particularly lacking twigs with information on reproductive organs. The new species <em>Torreya jiuquanensis</em> sp. nov. from the Lower Cretaceous of the Jiuquan Basin, Gansu, NW China provides valuable insights in seed-bearing structures of <em>Torreya</em>. Firstly, we present a comprehensive morphological description of <em>Torreya jiuquanensis</em> and it is distinguished from analogous fossils by more slender leaves and the obovate ovule. Secondly, phylogenetic analysis was utilized to determine that the position of <em>Torreya jiuquanensis</em> is located in the same clade as <em>Torreya taxifolia</em>. Meanwhile, the remarkable traits of <em>Torreya jiuquanensis</em> indicated that <em>Torreya</em> had demonstrated morphological stasis at least since the Early Cretaceous. Finally, through the examination of other genera within Taxaceae, it proposed that morphological stasis is not only observed in <em>Torreya</em> but also prevalent across nearly all genera of the Taxaceae, which are characterized by an evolutionary hysteresis. Moreover, a reinvestigation of the global fossil records and paleogeographic distribution of <em>Torreya</em> have revealed that <em>Torreya</em> was primarily restricted to the Northern Hemisphere in the Mesozoic, and multiple climate fluctuations were key drivers behind shifts in <em>Torreya</em> diversity and range migration.</div></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"168 ","pages":"Article 106056"},"PeriodicalIF":1.9,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143181578","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":"Two new species of the extinct subfamily Alitrepaninae (Coleoptera: Bostrichidae) from the Upper Cretaceous (Cenomanian) Kachin amber in northern Myanmar","authors":"Huan Wang,&nbsp;Yuan Peng,&nbsp;Qianhui Lin,&nbsp;Ruiqing Tao,&nbsp;Zirui Zhang,&nbsp;Shuo Wang","doi":"10.1016/j.cretres.2024.106051","DOIUrl":"10.1016/j.cretres.2024.106051","url":null,"abstract":"<div><div>Bostrichidae is commonly referred to as auger beetles. Of them, the subfamily Alitrepaninae is the only extinct subfamily of the family Bostirichidae. Here, based on detailed characterization analysis and comparisons with other species of the Alitrepaninae subfamily, we identified two new species of the genus <em>Poinarinius</em> in well-preserved Upper Cretaceous (Cenomanian) amber from northern Myanmar, along with a key to <em>Poinarinius</em> genus. Our new species can be clearly distinguished through the feature of head visible from above, dorsal plate of the pronotum, elytra performance and length of each tarsomere. Our study deepens insight into the adaptive evolution of the subfamily Alitrepaninae regarding feeding habits and resistance, as well as discussed the ecological habits of this taxon in Cretaceous. In summary, our findings will contribute to the understanding of the diversity and evolutionary origin of Bostirichidae.</div></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"167 ","pages":"Article 106051"},"PeriodicalIF":1.9,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142747482","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 palynological assemblage of the Nantun Formation in the Huhehu Sag, Hailar Basin, NE China: Implications for paleoenvironments","authors":"Yan Zhang ,&nbsp;Yun-fei Xue ,&nbsp;Chuan-biao Wan ,&nbsp;Wen-chun Ge","doi":"10.1016/j.cretres.2024.106054","DOIUrl":"10.1016/j.cretres.2024.106054","url":null,"abstract":"<div><div>The Cretaceous period, recognized as one of the warmest in Earth's geological timeline, is crucial for understanding paleoclimatic conditions. Palynological analyses, focusing on spores and pollen, play a vital role in reconstructing paleoenvironmental. This study emphasizes the relationship between climate and plant distribution through detailed palynological analyses. It reports the first discovery of abundant and diverse palynomorphs from the lower Nantun Fm in the Hailar Basin, Inner Mongolia, China. The identified palynological assemblage, termed the <em>Protoconiferus flavus</em>—<em>Pinuspollenites</em> sp.—<em>Quantouendinium</em> sp. (PPQ) assemblage, provides significant insights into the Early Cretaceous flora of northeastern China. The PPQ assemblage can be chronologically attributed to the Hauterivian–early Barremian interval, consistent with the LA–ICP–MS zircon U–Pb isotope ages of the Nantun Fm volcanic rocks. Paleovegetation reconstruction reveals a prevailing dominance of coniferous vegetation in the region represented by the PPQ assemblage, indicative of a characteristic of mid-to high-latitude mountain coniferous forest landscape. The climatic was mainly humid or semi-humid. This conclusion is supported by the abundance of freshwater dinocyst and green algae fossils, suggesting that sedimentation occurred in a shallow, freshwater hydrostatic environment with an estimated water temperature of approximately 20–25 °C. The environment was also nutrient-rich, which facilitated the proliferation of green algae such as <em>Scenedesmus</em>, <em>Pediastrum</em>, and <em>Tetraedron</em>. Identifying this assemblage is important for determining the age of the lower Nantun Fm, reconstructing paleovegetation and paleoclimate, and analyzing the lacustrine water conditions during the sedimentary period in the Hailar Basin.</div></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"167 ","pages":"Article 106054"},"PeriodicalIF":1.9,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142747480","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":"Palynology from the Cenomanian Puesto El Moro Formation (Santa Cruz Province, Argentina)","authors":"P.E. Santamarina ,&nbsp;V.S. Perez Loinaze ,&nbsp;M.S. González Estebenet ,&nbsp;M.V. Guler ,&nbsp;C. Discenza ,&nbsp;S. Lizzoli ,&nbsp;A.N. Varela","doi":"10.1016/j.cretres.2024.106055","DOIUrl":"10.1016/j.cretres.2024.106055","url":null,"abstract":"<div><div>During the Late Cretaceous and the Paleocene, terrestrial floras witnessed the so-called “Angiosperm Terrestrial Revolution”, when several modern clades of angiosperms originated and diversified. This process is scarcely studied in the Southern Hemisphere. Also, during the Cretaceous several carbon cycle alterations were registered, producing climatic modifications, and affecting both continental and marine biota. We present the palynological composition of the Puesto El Moro Formation, from the Cenomanian of Santa Cruz Province, Argentina. The sequence shows a progressive continentalization from coastal to fluvial sediments, representing an opportunity to understand how terrestrial floras evolved during this period in the Southern Hemisphere and how global climatic events affected them. Fifteen fertile palynological samples were studied. 142 species were recovered, with 23 bryophytes and lycophytes, 64 ferns, 34 gymnosperms, and 13 angiosperms. Dinoflagellate cysts are moderately abundant in the basal levels, but have poor preservation. The age of the unit was previously established as Cenomanian based on stratigraphic relations, and the palynostratigraphy supports this conclusion. Counts show that almost all the assemblages are dominated by gymnosperms (primarily <em>Classopollis</em>), followed by ferns (primarily <em>Cyathidites</em>). Bryophytes, lycophytes and angiosperms represent a minor proportion. Richness analysis shows that, on average, it tends to increase, with a great rise in the uppermost levels, pointing out the possible location of the Mid-Cenomanian Event. The Puesto El Moro palynoflora is closely related with the ones from the <em>Classopollis</em>-<em>Cyclusphaera</em> palynological sub-province. The analysis shows a latitudinal arrangement of the palynofloras, differentiated between them by their most abundant gymnosperm pollen grain.</div></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"168 ","pages":"Article 106055"},"PeriodicalIF":1.9,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143180243","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}