Cretaceous Research最新文献_第3页

Reply to comment made by Suarez-Gonzalez et al. on “Latest Jurassic-Early Cretaceous synrift evolution of the Torrelapaja Subbasin (Cameros Basin): Implications for Northeast Iberia palaeogeography” by Aurell et al. (Cretaceous Research 128 (2021) 104997) 回复Suarez-Gonzalez等人对Aurell等人“Torrelapaja次盆地（Cameros盆地）的晚侏罗世-早白垩世syng裂化演化：对伊比利亚东北古地理的启示”的评论（白垩纪研究128 (2021)104997）

IF 1.7 3区地球科学

Cretaceous Research Pub Date : 2026-05-01 Epub Date: 2025-11-27 DOI: 10.1016/j.cretres.2025.106274

Marcos Aurell , Beatriz Bádenas , Diego Castanera , José M. Gasca , José I. Canudo , Elisa Laita , Carlos L. Liesa

{"title":"Reply to comment made by Suarez-Gonzalez et al. on “Latest Jurassic-Early Cretaceous synrift evolution of the Torrelapaja Subbasin (Cameros Basin): Implications for Northeast Iberia palaeogeography” by Aurell et al. (Cretaceous Research 128 (2021) 104997)","authors":"Marcos Aurell , Beatriz Bádenas , Diego Castanera , José M. Gasca , José I. Canudo , Elisa Laita , Carlos L. Liesa","doi":"10.1016/j.cretres.2025.106274","DOIUrl":"10.1016/j.cretres.2025.106274","url":null,"abstract":"<div><div>Aurell et al. (2021) documented the Tithonian-Albian evolution of the Torrelapaja Subbasin (Cameros Basin, Spain) by defining three synrift sequences (SS), and highlighting new paleogeographic implications for northeast Iberia. The comment by Suarez-Gonzalez et al. (2025) expresses concern that our work challenges several established assumptions and interpretations by their research group. This Reply systematically addresses the three main points of scientific controversy raised in that comment: (1) The correlation between the Torrelapaja Formation (SS-2) and the Enciso Group of the Hauterivian-Barremian, further supported by recent cyclostratigraphic results that contradict the traditionally accepted Aptian age; (2) The mid-Albian age of the oyster-rich beds of the Torrelapaja Subbbasin (SS-3) and its assignment to the Escucha Formation, an interpretation consistent with regional stratigraphic and structural data; (3) The only northern source to explain the marine incursions in the Torrelapaja Subbasin, which best fits the facies distribution observed in the northern marginal zones of the Maestrazgo Basin during the Aptian-Albian. In particular, we show that the alternative proposal of a seaway connecting the Cameros and Maestrazgo basins during the early Aptian emphasized in Suarez-Gonzalez et al. (2025) is not supported by the available data.</div></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"181 ","pages":"Article 106274"},"PeriodicalIF":1.7,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145798616","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}

引用次数: 0

Integrated astrochronology, isotope and biostratigraphy of the Albian-Cenomanian transition and expression of the OAE 1d in an expanded record of a rapidly subsiding Tethyan synorogenic basin (Core Jásd-42, Transdanubian range, Hungary) 快速沉降特提斯同造盆地扩展记录中Albian-Cenomanian过渡的综合天文年代学、同位素和生物地表学及OAE 1d的表达（核心Jásd-42，跨多瑙河山脉，匈牙利）

IF 1.7 3区地球科学

Cretaceous Research Pub Date : 2026-05-01 Epub Date: 2026-01-07 DOI: 10.1016/j.cretres.2025.106311

Zsolt Vallner , Tamás Müller , Dávid Bajnai , Ottilia Szives , Lajos Ádám Csicsek , Gábor Héja , Bernát Heszler , Norbert Zajzon , József Pálfy

{"title":"Integrated astrochronology, isotope and biostratigraphy of the Albian-Cenomanian transition and expression of the OAE 1d in an expanded record of a rapidly subsiding Tethyan synorogenic basin (Core Jásd-42, Transdanubian range, Hungary)","authors":"Zsolt Vallner , Tamás Müller , Dávid Bajnai , Ottilia Szives , Lajos Ádám Csicsek , Gábor Héja , Bernát Heszler , Norbert Zajzon , József Pálfy","doi":"10.1016/j.cretres.2025.106311","DOIUrl":"10.1016/j.cretres.2025.106311","url":null,"abstract":"<div><div>The OAE 1d is one of the oceanic anoxic events that punctuate the Cretaceous and represent Earth system-wide changes prominently captured by carbon isotope excursions (CIE). Although the positive CIE near the Albian/Cenomanian boundary (ACB) is known from multiple localities, many of these records disagree in the shape of the δ<sup>13</sup>C curve. Interpretations of OAE 1d and a broader ACB Event (ACBE) remain ambiguous, and their duration is insufficiently constrained. Here we present new analyses on high-resolution samples from Core Jásd-42. The >450 m thick Pénzeskút Marl Fm. provides an expanded record across the ACBE. We generated elemental and stable isotope geochemical data and used these time series for cyclostratigraphic analyses. The derived astrochronologic age model establishes a depositional duration of 4.4–4.83 Myr and is integrated with ammonite and planktonic foraminifera biostratigraphy. This high-resolution chemostratigraphy provides a new, calibrated record of OAE 1d and the ACBE that we correlate with other reference sections, including the GSSP. A minimum estimate of 1.23 Myr and 2.28 Myr is obtained for OAE 1d and the ACBE, respectively. For the latter, a minimum of 602 kyr is assigned to the rising limb, 748 kyr to the culminating interval, and 931 kyr to the falling limb in the δ<sup>13</sup>C<sub>carb</sub> curve. The δ<sup>13</sup>C record through OAE 1d appears orbitally controlled, where the positive peaks are paced by long eccentricity. Considering the differences between seasonality extremes, we suggest a model for depositional cyclicity in a synorogenic basin with a high sedimentation rate of 9–15 cm/kyr.</div></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"181 ","pages":"Article 106311"},"PeriodicalIF":1.7,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146037875","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}

引用次数: 0

Paleoenvironmental evolution and Tethyan transgression during the Valanginian: Insights from the Tonalá and San Miguel Papalutla Formations, Tlaxiaco Basin, Mexico 瓦兰吉尼亚期古环境演化与特提斯海侵：来自墨西哥特拉西科盆地tonal<e:1>组和San Miguel Papalutla组的启示

IF 1.7 3区地球科学

Cretaceous Research Pub Date : 2026-05-01 Epub Date: 2025-12-10 DOI: 10.1016/j.cretres.2025.106293

Salatiel Díaz-Lara , Claudia Cristina Mendoza-Rosales , Gilberto Silva-Romo , Josep Anton Moreno-Bedmar , Miquel Company , Orestes Antonio de la Rosa-Mora

{"title":"Paleoenvironmental evolution and Tethyan transgression during the Valanginian: Insights from the Tonalá and San Miguel Papalutla Formations, Tlaxiaco Basin, Mexico","authors":"Salatiel Díaz-Lara , Claudia Cristina Mendoza-Rosales , Gilberto Silva-Romo , Josep Anton Moreno-Bedmar , Miquel Company , Orestes Antonio de la Rosa-Mora","doi":"10.1016/j.cretres.2025.106293","DOIUrl":"10.1016/j.cretres.2025.106293","url":null,"abstract":"<div><div>The Tlaxiaco Basin, located in southern Mexico within the Mixteca Terrane, preserves one of the most complete records of the breakup of Pangea. While its Jurassic units have been extensively studied in the context of rifting, this study focuses on the overlying Lower Cretaceous sedimentary succession, corresponding to the newly defined Tonalá Formation and the San Miguel Papalutla Formation.</div><div>Through facies and microfacies analysis, gamma-ray spectroscopy, detrital zircon geochronology, and ammonite biostratigraphy, we reconstruct the paleoenvironmental evolution and sea-level fluctuations in the Tlaxiaco Basin during the Early Cretaceous. These formations document a transition from a carbonate platform to deeper marine basin environments, allowing for the precise identification of facies shifts associated with marine transgression events.</div><div>One such transgression, recorded within the <em>Neocomites neocomiensiformis</em> ammonite Zone, correlates with the global third-order sequence KVa2 and reflects a Tethyan affinity. Sedimentological and U–Th geochemical data suggest warm, humid to tropical climatic conditions in the Tlaxiaco Bay during the Valanginian. The development of both formations occurred during a phase of thermal subsidence, resulting in a transgressive depositional pattern influenced by marine currents from the Tethys Sea.</div><div>This refined stratigraphic and paleoenvironmental framework supports the interpretation of the Tlaxiaco Basin as a passive-margin system, contributing to broader models of Early Cretaceous eustatic dynamics and continental margin evolution.</div></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"181 ","pages":"Article 106293"},"PeriodicalIF":1.7,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145885236","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}

引用次数: 0

Upper Cretaceous flora of the Gosau Group of Kainach, Styria, Austria 奥地利施蒂里亚Kainach地区Gosau群的上白垩纪植物区系

IF 1.7 3区地球科学

Cretaceous Research Pub Date : 2026-04-01 Epub Date: 2025-12-31 DOI: 10.1016/j.cretres.2025.106310

Jiří Kvaček , Fritz Messner , Franz Bernhard

{"title":"Upper Cretaceous flora of the Gosau Group of Kainach, Styria, Austria","authors":"Jiří Kvaček , Fritz Messner , Franz Bernhard","doi":"10.1016/j.cretres.2025.106310","DOIUrl":"10.1016/j.cretres.2025.106310","url":null,"abstract":"<div><div>Upper Cretaceous flora (upper Santonian - lower Campanian) is described from the Kainach Gosau Group sediments in Styria, Austria, in the Central Eastern Alps. The flora is associated with thin coal seams. It consists of angiosperms dominated by monocotyledon foliage <em>Pandanites trinervis</em>, which is typical for coal-bearing strata of Gosau. The second most abundant angiosperm foliage in the locality of Geistthal is platanoid foliage <em>Ettingshausenia geistthalensis</em> sp. nov. Twelve dicotyledon leaves are described from the area of Kainach Gosau, including three new species <em>Juglandiphyllites kainachensis</em> sp. nov., <em>J. graefii</em> sp. nov. and <em>J. roemaskogelensis</em> sp. nov. Ferns and conifers (<em>Geinitzia reichenbachii</em>) are present, but in a distinct minority. The preserved flora is interpreted as vegetation of three types: 1) alluvial plain vegetation dominated by platanoids, 2) coal swamp vegetation dominated by pandanoids, 3) upland vegetation dominated by probable juglandoids. The terrestrial vegetation grew on the tectonically driven orogenic island, a part of the Adriatic Plate, in the northern part of the Tethys Sea. The massive occurrence of the <em>Pandanites</em> monocot is important not only as a palaeoecological indicator, but also for phytogeographical interpretations. As a thermophilous plant, it was tectonically delivered from the African coast to the southern coast of Europe by tectonic plate movement.</div></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"180 ","pages":"Article 106310"},"PeriodicalIF":1.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145980853","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}

引用次数: 0

Late Albian floras of eastern Iberia: Insights into the palaeoenvironments and palaeoecology of fossil plant communities associated with amber-bearing sedimentary successions 伊比利亚东部的晚阿尔巴尼亚植物群：与含琥珀沉积演替有关的化石植物群落的古环境和古生态的见解

IF 1.7 3区地球科学

Cretaceous Research Pub Date : 2026-04-01 Epub Date: 2025-12-27 DOI: 10.1016/j.cretres.2025.106308

Carlos A. Bueno-Cebollada , Jiří Kvaček , Eduardo Barrón

{"title":"Late Albian floras of eastern Iberia: Insights into the palaeoenvironments and palaeoecology of fossil plant communities associated with amber-bearing sedimentary successions","authors":"Carlos A. Bueno-Cebollada , Jiří Kvaček , Eduardo Barrón","doi":"10.1016/j.cretres.2025.106308","DOIUrl":"10.1016/j.cretres.2025.106308","url":null,"abstract":"<div><div>Late Albian floras from eastern Iberia are mainly dominated by conifers with xeromorphic adaptations and include well-diversified fern and angiosperm communities. Some of these coniferous taxa are believed to be related to a global mass resin production period known as the Cretaceous Resin Interval (CREI), which ultimately led to the development of amber sites.</div><div>This research presents a study of late Albian macro- and mesofloras of eastern Iberia from descriptive, palaeoecological, and palaeoclimatological perspectives. The studied material was collected from four outcrops: the Cañada del Hoyo outcrop, located in the Cuenca Basin; and the Arroyo de la Pascueta, Cortes de Arenoso, and San Just outcrops, located in the Maestrazgo Basin. The collected taxa were grouped into four palaeoecological associations (PA-1 to PA-4), representing different biocoenoses from the coastline to the hinterland: Supra-to intertidal vegetal communities (PA-1), Nearshore woodlands with Araucariaceae (PA-2), Drought-adapted hinterland vegetation (PA-3), and Local riparian vegetal communities (PA-4). The dominance of taxa assigned to the genera <em>Frenelopsis</em>, <em>Dammarites</em>, and <em>Eretmophyllum</em> indicates that most of the assemblages are related to supratidal plant communities, a typical feature of the mid-Cretaceous Tethyan coast.</div><div>Furthermore, we reinforce the hypothesis of an Araucariaceae affinity for some of the upper Albian amber of the Maestrazgo Basin based on the presence of <em>Brachyphyllum</em> cf. <em>obesum</em> Heer (1881) and <em>Rabagostrobus</em> cf. <em>hispanicus</em> Kvaček et al. (2018)<em>.</em> We also relate the lack of upper Albian amber-bearing strata in the Cuenca Basin to the sedimentary environment dynamics rather than to the nature of the palaeobotanical assemblages.</div></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"180 ","pages":"Article 106308"},"PeriodicalIF":1.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145928913","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}

引用次数: 0

A new upper Cretaceous bramble shark from central Chile reveals austral diversity among Weddellian echinorhinids 在智利中部发现的一种新发现的上白垩纪黑刺鲨揭示了威德尔棘爪类动物在南方的多样性

IF 1.7 3区地球科学

Cretaceous Research Pub Date : 2026-04-01 Epub Date: 2025-12-31 DOI: 10.1016/j.cretres.2025.106309

Rodrigo A. Otero , Sergio Soto-Acuña , Raúl Ugalde , Patricio Sepúlveda , Alexander O. Vargas , Guillermo Aguirrezabala , Héctor Ortiz

{"title":"A new upper Cretaceous bramble shark from central Chile reveals austral diversity among Weddellian echinorhinids","authors":"Rodrigo A. Otero , Sergio Soto-Acuña , Raúl Ugalde , Patricio Sepúlveda , Alexander O. Vargas , Guillermo Aguirrezabala , Héctor Ortiz","doi":"10.1016/j.cretres.2025.106309","DOIUrl":"10.1016/j.cretres.2025.106309","url":null,"abstract":"<div><div>Teeth of bramble sharks (Echinorhinidae) are one of the scarcest chondrichthyan elements reported to date in the Upper Cretaceous of central Chile and in general, South America. Prior to this research, its local record was restricted to only four available specimens, previously considered to be equivalent to teeth from the upper Maastrichtian of Argentinean Patagonia, being these referred to the species <em>Echinorhinus maremagnum.</em> This contribution presents two new elements, including the first complete large tooth from central Chile, showing the presence of a distally projected basal cusplet and a complex mesial, serrated cutting edge with the primordium of two clear cusplets, this last being a trait commonly present in several Cenozoic species. These new features remained unnoticed in the previous material from central Chile, either due to informative portions missing or the immature growth stage of the smaller known sample. The dental features of the new specimen are unique among known species of the genus <em>Echinorhinus</em>; moreover, the crown traits represent an ancestral condition with respect to those features commonly present in Cenozoic species. With the new evidence, all the known <em>Echinorhinus</em> teeth from the lower Maastrichtian of central Chile are now referred to <em>Echinorhinus taverai</em> sp. nov. The occurrence of the studied material directly associated with an elasmosaur skeleton is consistent with other findings of the genus in the Southern Hemisphere, suggesting that Upper Cretaceous austral <em>Echinorhinus</em> spp. were opportunistic scavengers in the shallow coastal waters of southern South America.</div></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"180 ","pages":"Article 106309"},"PeriodicalIF":1.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145928914","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}

引用次数: 0

A new species of Pahasapasaurus (Plesiosauria: Polycotylidae) from the upper Cretaceous (lower Turonian) Tropic Shale of southern Utah, U.S.A. 美国犹他州南部上白垩世（下Turonian）热带页岩中的一新种（蛇颈龙目：多子龙科）

IF 1.7 3区地球科学

Cretaceous Research Pub Date : 2026-04-01 Epub Date: 2025-11-25 DOI: 10.1016/j.cretres.2025.106269

Rebecca L. Schmeisser McKean

{"title":"A new species of Pahasapasaurus (Plesiosauria: Polycotylidae) from the upper Cretaceous (lower Turonian) Tropic Shale of southern Utah, U.S.A.","authors":"Rebecca L. Schmeisser McKean","doi":"10.1016/j.cretres.2025.106269","DOIUrl":"10.1016/j.cretres.2025.106269","url":null,"abstract":"<div><div>The Tropic Shale is an Upper Cretaceous (Cenomanian–Turonian) formation that was deposited along the western side of the Cretaceous Western Interior Seaway. The biodiversity within the Tropic Shale is high, with marine organisms including ammonoids, bivalves (clams, oysters), gastropods, actinopterygians, chondrichthyans, turtles, mosasaurs, and plesiosaurs. This paper describes a new polycotylid plesiosaur, <em>Pahasapasaurus gillettei</em> sp. nov., based on a well-preserved, partial skeleton from the Tropic Shale of southern Utah, U.S.A. Several characteristics from this specimen are shared with the genus <em>Pahasapasaurus</em>, including the morphology of the palate (lack of an anterior interpterygoid vacuity, a robust parasphenoid with ventral keel), an elongated temporal fenestra, a low tooth count in the mandibular symphysis, and the lack of a posterodistal expansion of the humerus. <em>Pahasapasaurus gillettei</em> is distinct in possessing teeth with smooth enamel, a posterior extension of the squamosals along the midline, a low maxillary tooth count, a small posterolateral extension of the coracoid, as well as a unique combination of characters. <em>Pahasapasaurus</em> was previously known from a single species (<em>P. haasi</em>) from the upper Cenomanian Greenhorn Limestone of South Dakota, U.S.A., deposited along the eastern side of the Western Interior Seaway. The discovery of <em>P. gillettei</em> extends the known range of the genus <em>Pahasapasaurus</em> into slightly younger (lower Turonian) sediments along the opposite side of the seaway and has implications for the evolutionary history of polycotylid plesiosaurs. <em>Pahasapasaurus gillettei</em> also adds a sixth species of short-neck plesiosaur to the Tropic Shale, expanding the known biodiversity of this productive formation.</div></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"180 ","pages":"Article 106269"},"PeriodicalIF":1.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145980854","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}

引用次数: 0

Blooming under the shadow of Patagotitan mayorum: Early Cretaceous tiny flowers from Patagonia, Argentina 在巴塔哥尼亚的阴影下绽放：早白垩世的小花，来自阿根廷巴塔哥尼亚

IF 1.7 3区地球科学

Cretaceous Research Pub Date : 2026-02-01 Epub Date: 2025-10-14 DOI: 10.1016/j.cretres.2025.106254

Giovanni C. Nunes , Ignacio H. Escapa , Luis M. Sender , N. Rubén Cúneo , Maria A. Gandolfo

{"title":"Blooming under the shadow of Patagotitan mayorum: Early Cretaceous tiny flowers from Patagonia, Argentina","authors":"Giovanni C. Nunes , Ignacio H. Escapa , Luis M. Sender , N. Rubén Cúneo , Maria A. Gandolfo","doi":"10.1016/j.cretres.2025.106254","DOIUrl":"10.1016/j.cretres.2025.106254","url":null,"abstract":"<div><div>The fossil record of angiosperm reproductive remains from Lower Cretaceous deposits is critical for understanding angiosperm early evolution and rapid radiation. The fossil record of early flowers from the Southern Hemisphere is still extremely scarce compared to the Northern Hemisphere, particularly from outcrops located south of the Tropic of Capricorn. Here, we describe flowers from Upper Albian (101 Ma; Cerro Barcino Formation) deposits of Patagonia, Argentina, found in association with <em>Patagotitan mayorum</em>, the largest known dinosaur in the world at present. The flowers are pistillate, less than 10 mm in diameter, actinomorphic, pentamerous, and perigynous, with a tepaloid perianth, and are assigned to the new genus and species <em>Patagoflora minima</em>. This discovery represents the first Albian record of flowers for southern South America and one of the best-dated ones for Gondwana. <em>Patagoflora minima</em> is also one of the very few examples of flowers preserved along with dinosaurs. Its association with abundant and diverse angiosperm leaves and dinosaur remains provides significant data for understanding the ecosystems inhabited by the largest terrestrial animals that ever lived.</div></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"179 ","pages":"Article 106254"},"PeriodicalIF":1.7,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145418136","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}

引用次数: 0

New ephialtitid wasps (Hymenoptera) of the Early Cretaceous Jehol Biota from NE China 中国东北早白垩世热河生物群中蜂类新种（膜翅目）

IF 1.7 3区地球科学

Cretaceous Research Pub Date : 2026-02-01 Epub Date: 2025-09-13 DOI: 10.1016/j.cretres.2025.106234

Ning Jia , Qi Zhang , Haichun Zhang

引用次数: 0

A continental record of the late Campanian negative carbon isotopic excursion (LCE, late Campanian event) in the Dinosaur Park Formation, Alberta, Canada 加拿大阿尔伯塔省恐龙公园组晚坎帕尼亚负碳同位素漂移（LCE，晚坎帕尼亚事件）的大陆记录

IF 1.7 3区地球科学

Cretaceous Research Pub Date : 2026-02-01 Epub Date: 2025-11-10 DOI: 10.1016/j.cretres.2025.106263

Muditha Goonetilleke, Ricardo L. Silva, Paul R. Durkin

{"title":"A continental record of the late Campanian negative carbon isotopic excursion (LCE, late Campanian event) in the Dinosaur Park Formation, Alberta, Canada","authors":"Muditha Goonetilleke, Ricardo L. Silva, Paul R. Durkin","doi":"10.1016/j.cretres.2025.106263","DOIUrl":"10.1016/j.cretres.2025.106263","url":null,"abstract":"<div><div>The Campanian was the longest stage of the Late Cretaceous and witnessed multiple global carbon cycle disruption episodes, including the negative carbon isotope excursion (CIE) known as the Late Campanian Event (LCE). However, Campanian-aged δ<sup>13</sup>C perturbations are primarily documented in marine environments, raising questions about their record in terrestrial settings and the potential use of terrestrial stable carbon isotope records from the Campanian as a chemostratigraphic tool. In this study, we present a stable carbon isotope record from fossil organic matter preserved in the alluvial floodplains of the Dinosaur Park Formation, which is radiometrically dated to the time interval containing the LCE. Results reveal a ∼0.8 ‰ negative CIE recorded in floodplain fossil organic matter. We show that the negative CIE is not a result of changing organic matter or diagenesis and that it likely reflects the global atmospheric δ<sup>13</sup>C signal during the Campanian. We interpreted the identified negative CIE as a continental record of the LCE. When we couple our δ<sup>13</sup>C<sub>TOC</sub> record with the Dinosaur Park Formation's age model, we can correlate our section with other well-dated European marine stratigraphic sections. Our findings demonstrate that Campanian carbon cycle perturbations are preserved in terrestrial environments. For the first time, we recognize that the deposition of the world-famous dinosaur-bearing Dinosaur Park Formation in Alberta was contemporaneous with a major global carbon cycle perturbation episode. Our findings contribute to contextualizing ongoing research and re-evaluating previous studies on dinosaur evolution and other contemporary groups, within the framework of planetary-scale Earth system disturbances.</div></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"179 ","pages":"Article 106263"},"PeriodicalIF":1.7,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145579117","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}

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