Upper cretaceous. The statistical and probabilistic analyses of a database of Upper Cr...

Jun 1, 2023 · Dinosaurios Cretaceous tetrapods of Argentina; J

Research highlights The provenance of upper Cretaceous strata in the Tethys Himalaya provides significant constraints on the closing of the Neo-Tethys Ocean and the initial India–Asia collision. We carried out a detailed provenance study on the upper Cretaceous clastic sedimentary rocks of the northern Tethys Himalaya, near Gyangze, …Thanatosdrakon (IPA: [θænətɒsdrɑːkɒn]) (meaning "dragon of death") is a genus of quetzalcoatline azhdarchid pterosaur from the Late Cretaceous (Upper Coniacian-Lower Santonian) Plottier Formation of the Neuquén Basin in western Argentina (Andes mountain range).The genus name is derived from the Greek words thanatos (=death) and drakon (=dragon), while the specific name is a Quechuan ...Meanwhile King George Island, at North, contains an Upper Cretaceous to Miocene fossiliferous succession (Birkenmajer, 1980; Shen Yanbin, 1994). This age data seems to confirm the yonging of the lithologies from south to north in western Antarctic Peninsula, as was proposed, among others, by Thompson (1992) and Birkenmajer et al. (1986).Outcrop images of the Upper Jurassic-Lower Cretaceous carbonate succession from the southern part of the Postăvaru Massif. a General view of the Muchia Cheii ridge.b Upper Jurassic massive limestones from Poiana Brașov (central Postăvaru Massif).c Decimeter-meter thick carbonate beds from the upper part of the Drumul Roșu section (white lines).The alvarezsaurids are best known from the Upper Cretaceous of the Gobi Desert in Mongolia and northern China, although they are among the rarest theropod dinosaurs there. Even the fragmentary specimen PIN 5838/1, the holotype of Ondogurvel alifanovi described herein is among the most complete alvarezsaurid specimens known from the Gobi Desert.The Saratoga Chalk of Arkansas yields a rich ammonite fauna of 17 species, referred to the Nostoceras (N.) hyatti zone. Recognition that the northwest European N. (N.) pozaryskii Blaszkiewicz, 1980, is a synonym of N. (N.) hyatti Stephenson, 1941, and N. (N.) helicinum (Shumard, 1861) dates the zone as latest Campanian on the basis of co-occurrence with Belemnitella langei Jeletzky, 1948, in ...These successions correspond to four distinct tectono-sedimentary phases, from older to younger forming the Upper Paleozoic Karoo Supergroup, the Cretaceous Galula Formation, the Oligocene Nsungwe Formation and the Miocene-Recent Lake Beds strata (Roberts et al., 2012) (Fig. 1).the Upper Cretaceous Tuscaloosa and Woodbine Formations, Western Gulf Province of the Gulf Coast Region, Louisiana and Texas, 2007 Printed on recycled paper Introduction The U.S. Geological Survey (USGS) completed an assessment of the undiscovered natural gas resources of the Upper Cretaceous Tuscaloosa and Woodbine Formations in the downdipThe Pierre Shale is a geologic formation or series in the Upper Cretaceous which occurs east of the Rocky Mountains in the Great Plains, from Pembina Valley in Canada [2] to …The Cretaceous is the only Phanerozoic system that does not yet have an accepted global boundary definition, despite over a dozen international conferences and working group meetings having been dedicated to the issue since 1974 (e.g., reviews by Zakharov et al., 1996; Cope, 2007; Wimbledon et al., 2011 ). The difficulties in assigning a global ...Request PDF | On Apr 1, 2023, Roman A. Bapinaev and others published New data on high-latitude hadrosaurid dinosaurs from the Upper Cretaceous Kakanaut Formation of Chukotka, Russia | Find, read ...Cretaceous Period - Climate, Extinction, Dinosaurs: In general, the climate of the Cretaceous Period was much warmer than at present, perhaps the warmest on a worldwide basis than at any other time during the Phanerozoic Eon. The climate was also more equable in that the temperature difference between the poles and the Equator was about …section of Cretaceous and lower Tertiary rocks from the Book Cliffs near Price, Utah, to the Colorado-Utah State line. The projected outcrop equivalent of the Upper Cretaceous section in the Wilkin Ridge well is between the Sunnyside and Green River locations (figs. 1,2), and, although analogies can be drawn between the outcrop and21 de abr. de 2020 ... The age of the “Kem Kem beds” has been regarded variously as mid or early Late Cretaceous (Albian-Cenomanian). Lavocat (1948) described the most ...Fossils are found in a variety of rock formations dating to the Maastrichtian age of the Upper Cretaceous period, 68 to 66 million years ago. It was the last known member of the tyrannosaurids and among the last non-avian dinosaurs to exist before the Cretaceous–Paleogene extinction event.Jun 1, 2023 · Dinosaurios Cretaceous tetrapods of Argentina; J.F. Bonaparte et al. Los saurópodos de América los grupos Neuquén y Chubut, y sus relaciones cronológicas; J.F. Bonaparte et al. A continental assemblage of tetrapods from the Upper Cretaceous beds of El Brete, northwestern Argentina (Sauropoda, Coelurosauria, Carnosauria, Aves) Description Restoration of the skull. Although perhaps little larger than a Virginia opossum, with a skull length of 12.2 centimetres (4.8 in) and a weight of 5.2 kilograms (11 lb), Didelphodon was the largest Cretaceous mammal. The teeth have specialized bladelike cusps and carnassial notches, indicating that the animal was a predator; the jaws are …Pore and pore network evolution of Upper Cretaceous Boquillas (Eagle Ford-equivalent) mudrocks: Results from gold tube pyrolysis experiments AAPG Bulletin. Modeling the effects of microscale fabric complexity on the anisotropy of the Eagle Ford Shale Interpretation ...Tyrannosaurus rex arose during the Cretaceous period about 85 million years ago, and thrived as a top land predator until the dinosaurs went extinct 20 million years later. This skeleton, on ... The Cretaceous period has just two very long epochs: Upper Cretaceous 100.5 million years ago (mya) to 65 mya; Lower Cretaceous 145.5 mya to 100.5 mya. The Lower Cretaceous at ~45 million years, is the longest epoch in the Phanerozoic eon. Though famous for its land fauna, the Cretaceous sea level rose much higher than today. Upper Jurassic (Oxfordian) Smackover Formation is a source of hydro-carbon. In eastern Texas and western Louisiana to the south where the Eagle Ford is thin to absent, hydrocarbons in the Austin Chalk are derived from sources in older Upper Cretaceous rocks (Hood and others, 2002). Hydrocarbons migrated into conventional reservoirs in the Austin The Upper Cretaceous (Maastrichtian) Lameta Formation is well-known for its osteological and oological remains of sauropods from the eastern and western parts of the Narmada Valley, central India. The newly documented ninety-two titanosaur clutches from Dhar District (Madhya Pradesh State, central India) add further to this extensive data. Previously parataxonomy of these titanosaur clutches ...Upper Cretaceous aquifers. Upper Cretaceous aquifers of the Coastal Plain monocline in central and eastern Alabama are mainly barrier-island tidal inlet and shoreface paleoenvironmental facies within clastic dominated lithostratigraphic units, particularly Eutaw Formation, Blufftown Formation, Cusseta Sand, Ripley Sand, and Providence Sand. To define the precise structuration that controls the Upper Cretaceous Formation (AR/C) in the SWS oil field, many seismic sections were interpreted showing extensional faults with upward splays formed by synthetic and antithetic normal faults (Fig. 20, Fig. 21). The extensional nature of the faults shown in (Fig. 20, Fig. 21) is evident from ...May 1, 2022 · Detailed field and lithostratigraphic studies are carried out on the Upper Cretaceous-Lower Paleogene section at Esh El-Mellaha area, Gulf of Suez, Egypt. The section is located at Wadi Dib west ... The Upper Cretaceous Hall Lake Formation is exposed in south-central New Mexico in Sierra County, primarily across the Cutter sag, between the Fra Cristobal Mountains to the north and Caballo Mountains to the south (Kelley and Silver, 1952; Lucas et al., 2019) (Fig. 1).The Hall Lake Formation was previously considered a member of the McRae Formation (e.g., Lozinsky et al., 1984; Wolberg et al ...The Nenjiang Formation is part of the post-rift thermal subsidence section of the Songliao Basin that contains a nearly complete record of upper Lower Cretaceous to lower Paleocene lacustrine sediments in the basin centre (Deng et al., 2013, Feng et al., 2010, Wang et al., 2013).Early or Lower Cretaceous. It begins after the end of the Jurassic, approximately 145 million years ago, and extends until about 113 million years ago. It includes the Berriasian, Valanginian, Hauterivian, Barremian, Aptian and Albian ages. Late or Upper Cretaceous. It begins about 100.5 million years ago and lasts until about 72 million years ago.7 de set. de 2018 ... At the time the Upper Cretaceous portion of the formation was deposited, central western Queensland was at ∼50°S palaeolatitude (Li & Powell, ...The Upper Cretaceous biostratigraphy of the East European Platform (EEP) and adjacent regions has been based on the Western European macropaleontological standard (Olferiev and Alekseev, 2005), since the Turonian-Campanian siliceous deposits of the Moscow and Voronezh regions and the Volga Basin (Ulyanovsk, Volgograd and Saratov Regions) are very poor considering the faunal groups ...Upper Cretaceous-Paleocene Magnetostratigraphy of the Longmenshan Foreland Basin and Its Implications for the Tectonic Deformation of the Longmenshan Fault Zone. ... The LMSFZ experienced two stages of uplift during the Cretaceous-Early Cenozoic (at 128.0-124.1 and 68.8-64.1 Ma). (b) The stress field generated by the subduction and ...In this work, an assemblage of fossil woods briefly mentioned by Alvarez et al. (2019, 2020) from the Bajo Barreal Formation (Upper Cretaceous of the Golfo San Jorge Basin, in central Patagonia, Argentina) is described in detail, being the second study of woods from this stratigraphic unit, after that of Pujana et al. (2007).The Lower Cretaceous is the first geological epoch in the Cretaceous. It began 145 million years ago, and ended 100.5 million years ago. ... In the Lower Cretaceous, the sea level was much lower than in the Upper Cretaceous. In the Wealden, Southern England was a huge tropical river delta; in the Greensand the same areas were just offshore.2001 Bones and rocks of the Upper Cretaceous Two Medicine-Judith River clastic wedge complex, Montana. In Field Trip Guidebook, Society of Vertebrate Paleontology 61st Annual Meeting: Mesozoic and Cenozoic Paleontology in the Western Plains and Rocky Mountains (ed CL Hill ), vol. 3, pp. 3-14. Museum of the Rockies Occasional Paper.The European Upper Cretaceous deposits have yielded an abundant record of dinosaurs and other continental vertebrates with a great number of sites discovered in the last decades (e.g., [1,2,3,4,5,6,7,8]).In this context, particularly relevant are the sedimentary units of the Ibero-Armorican domain, mainly distributed in the Lusitanian (Portugal), Iberian (central Spain), Pyrenees (north ...These variations result from the reactivation of an ante-Cretaceous NE-SW to E-W preexisting fault, which has controlled the sedimentation of the Cretaceous series in an N-S direction. Likewise, this tectonic inheritance is associated to a well pronounced synsedimentary tectonic activity, which is clearly involved in the structuring of Upper ...The Upper Cretaceous rocks are widely exposed in the western foothills of the Northern Oman Mountains (Fig. 1). These rocks are the oldest units that lie unconformably upon the Semail Ophiolite and the folded, thrusted, Hawasina and Sumeini groups of Permian–Late Cretaceous age ...Cretaceous: A Time of Chalk. Much chalk was deposited during the Cretaceous Period of geologic time. It was a time of global high sea levels that began at the end of the Jurassic Period about 145 million years ago and the beginning of the Paleogene Period about 66 million years ago. ... Upper Cretaceous Austin Chalk, U.S. Gulf Coast: by Krystal ...ODP Leg 132, with some Upper Cretaceous sediment recovered at Sites. 47, 48, 305, 577, and 810. The Cretaceous sectio ns recovered at all sites. d u r i n g L e g 1 9 8 w e r e c h a r a c t e r i ...A recently discovered articulated partial skeleton of Ornithomimus from the Upper Cretaceous Dinosaur Park Formation of Alberta, Canada is remarkable in the extent and quality of preservation of integumentary structures including feathers. It is the first ornithomimid to preserve a tail bearing extensive plumaceous feathers that are slightly more elongate in comparison to those present on the ...The Kuji Group is an Upper Cretaceous non-marine and shallow marine sedimentary succession that is exposed on the eastern margin of northeastern Honshu Island, Japan (Fig. 1). The Kuji Group overlies the pre-Cretaceous accretionary complex and the Lower Cretaceous granitoids, and is overlain by the Paleogene Noda Group with parallel ...Table of Contents. The Upper Cretaceous deposits of Maryland, by W.B. Clark. The petrography and genesis of the sediments of the Upper Cretaceous of Maryland, by M.I. Goldman. The Upper Cretaceous floras of the world, by E.W. Berry. Correlation of the Upper Cretaceous formations, by W.B. Clark, E.W. Berry, and J.A. Gardner.The Upper Cretaceous units of the Golfo San Jorge Basin, where the vertebrate fossil record is significant, comprise Bajo Barreal (early Cenomanian-late Turonian) and Lago Colhué Huapi (Coniacian-Maastrichtian) formations (see Casal et al., 2015, 2016). The variety of fossil vertebrates in these units constitutes an excellent opportunity to ...Upper Cretaceous to Miocene; skull laterally flattened; choanae in depression in anterior part of pterygoids. Suborder Eusuchia Upper Jurassic to Recent; choanae entirely enclosed by pterygoids. Family Alligatoridae (alligators and caimans) 4 genera and 8 species; teeth of lower jaw fit inside those of upper jaw.Isolated shark teeth in Upper Cretaceous rocks of the Russian Far East and northwest Pacific region have been noted sporadically from Sakhalin Island (Glikman, 1980;Nessov and Golovneva, 1990 ...The fossil record for neoceratopsian (horned) dinosaurs in the Lower Cretaceous of North America primarily comprises isolated teeth and postcrania of limited taxonomic resolution, hampering previous efforts to reconstruct the early evolution of this group in North America. An associated cranium and lower jaw from the Cloverly Formation (?middle-late Albian, between 104 and 109 million years ...Aerotitan sudamericanus, from the Upper Cretaceous of the Neuquén Basin (Patagonia, Argentina), is known from a partial jaw fragment which has been interpreted as either an azhdarchid upper jaw, azhdarchid lower jaw, or thalassodromine upper jaw (as the sister-group of Alanqa). Here, we compare it in detail to upper and lower jaws of taxa ...The Upper Cretaceous Israeli marine succession was influenced by two major unrelated processes: (1) Tectonic-control of the Syrian Arc fold system that differentiated the outer-shelf into ...May 9, 2022 · Recently, a construction project in the Upper Cretaceous red beds of the Ganzhou Basin, Jiangxi Province, China revealed a fossilized clutch of spheroolithid eggs. In this contribution, we briefly describe two of these eggs and their embryonic contents, accessioned at the Yingliang Stone Natural History Museum (YLSNHM) in Fujian Province, China. Abelisauridae is a theropod clade with a wide distribution in the Late Cretaceous of Gondwana.Some of the best preserved abelisaurid specimens were recovered from Patagonia (Argentina) such as Skorpiovenator, Ilokelesia, Carnotaurus and Aucasaurus.Here we describe a dorsal part of a neural spine; a middle caudal vertebra; a distal part of a left metatarsal IV; a complete right phalanx IV-1 ...Aerotitan sudamericanus, from the Upper Cretaceous of the Neuquén Basin (Patagonia, Argentina), is known from a partial jaw fragment which has been interpreted as either an azhdarchid upper jaw, azhdarchid lower jaw, or thalassodromine upper jaw (as the sister-group of Alanqa).Here, we compare it in detail to upper and lower jaws of taxa belonging to all azhdarchoid lineages.The Austin Group (Coniacian-Santonian) is a sequence of interstratified chalk and marl deposited during a sea-level highstand as a transgressive unit. Austin Chalk deposition occurred on a southeastward-dipping carbonate ramp that exhibits distinctive onshore and offshore chalk lithofacies. Discrete intervals within offshore Austin lithofacies ...The Upper Jurassic-Lower Cretaceous strata, known as the Shamuluo or Rina Formation, overlying the subduction-accretionary complex, is a terrigenous clastic-carbonate rocks over 800 m thick, and contains Spongiomorpha sp., corals, sponges, ammonites, and foraminifera and plant fossils, and the gravels which consists of basic-ultrabasic rocks ...The ichnofossil assemblage from the Upper Cretaceous Kem Kem beds contributes evidence for a transition from predominantly terrestrial to marine deposition. Body fossil and ichnofossil records ...Detailed measured sections and regional stratigraphic cross sections are used to reconstruct facies maps and interpret paleogeographic settings for the interval from the base of Upper Cretaceous Mesaverde Formation to top of lower member of the Paleocene Fort Union Formation in the Wind River Basin, Wyoming. The Mesaverde Formation spans the time during which the Upper Cretaceous seaway retSection snippets Locality and horizon. The fossil material here described comes from the Upper Cretaceous Chorrillo Formation (upper Campanian-Maastrichtian), La Anita Farm, near El Calafate city, in southwest Santa Cruz Province, Patagonia, Argentina (Fig. 1).The stratigraphic succession of the Chorrillo Formation is made up of intercalated levels of greenish and reddish sandstones, with ...... Upper Cretaceous (Senonian) formations. Figure 1 Facies map and schematic paleogeographic reconstruction of the Moroccan Atlas region during the Late ...Planktonic foraminifera are one of the most stratigraphically important groups of organisms for the Cretaceous system. However, standard foraminiferal zonations based mostly on species from the Tethyan bioprovince are hardly applicable in temperate regions where warm-water taxa are scarce or lacking. We propose a foraminiferal zonation based on foraminiferal events recognized in the northern ... Upper Cretaceous aquifers. Upper Cretaceous aquifers of the Coastal Plain monocline in central and eastern Alabama are mainly barrier-island tidal inlet and shoreface paleoenvironmental facies within clastic dominated lithostratigraphic units, particularly Eutaw Formation, Blufftown Formation, Cusseta Sand, Ripley Sand, and Providence Sand. A new genus and species of rove beetle, Afristenus orapensis gen. et sp. nov., is described and figured based on one well-preserved compression fossil from the African, Upper Cretaceous fossil insect deposit, Orapa Diamond Mine in north-east Botswana.Afristenus is definitively placed in the extant subfamily Steninae based on its harpoon-like labial feeding apparatus.The sedimentary facies of the Upper Cretaceous to Eocene succession consist of turbidite and sandstones, suggesting that they were deposited in the deep sea portions of submarine-fans and basin ...We describe a giant titanosaurid sauropod dinosaur discovered in coastal deposits in the Upper Cretaceous Bahariya Formation of Egypt, a unit that has produced threeTyrannosaurus-sized theropods and numerous other vertebrate taxa.Paralititan stromeri is the first tetrapod reported from Bahariya since 1935. Its 1.69-meter-long humerus is longer than that of any known Cretaceous sauropod.This upper Cretaceous source provides good oil source rocks in most parts of The Western Desert and moderate-quality gas source rocks in the Umbaraka area. Significant amounts of oil believed to have been generated from this source, are located in the Abu Gharadig and Gindi basins (Schlumberger 1995).Upper Cretaceous rocks form a virtually continuous blanket over the Gulf of Mexico basin. Overall, the inner edge of the northern outcrop parallels the deeply buried Paleozoic Ouachita orogenic belt. Conspicuous projecting features, such as the Rio Grande and Mississippi embayments, are situated on pronounced salients of the older Ouachita ...Amiot, R. et al. Latitudinal temperature gradient during the Cretaceous Upper Campanian-Middle Maastrichtian: δ18O record of continental vertebrates. Earth Planet. Sci. Lett. 226, 255-272 (2004).Major, trace and rare earth elements (REE) composition of sandstones from the Upper Cretaceous Sillakkudi Formation, Ariyalur Group, Cauvery Basin were studied to decipher their weathering and provenance history. Texturally, these sandstones are immature, poorly sorted and grain supported. Abundance of feldspars especially, plagioclase indicates rapid deposition of sediments from a nearby ...Aug 1, 2022 · The Upper Cretaceous foraminifera of Kemar-1 in the Bornu Basin are dominated by arenaceous foraminifera, including Ammobaculites, Haplophragmoides, etc (Adegoke, 2012). Large numbers of arenaceous foraminifera were found in Upper Cretaceous outcrop of the Benue Trough, including Glomospirella , Miliammina , Haplophragmoides , Ammoastuta ... Upper Cretaceous leaf flora from the Blaszyk Moraine (Zamek Formation), King George Island, South Shetland Islands, West Antarctica. Acta Palaeobotanica, 34 (1994), pp. 119-163. Google Scholar. 151. Zhiyan Zhou, Haomin Li. Some Late Cretaceous plants from King George Island, Antarctica.The deposits corresponding to the Upper Cretaceous Neuquén and San Jorge Gulf basins from northern and central Patagonia have provided two of the most complete sequences of terrestrial vertebrate faunas of all Gondwanan landmasses. Among the carnivorous components, the carcharodontosaurid theropods appeared as common elements during the Early ...Aerotitan sudamericanus, from the Upper Cretaceous of the Neuquén Basin (Patagonia, Argentina), is known from a partial jaw fragment which has been interpreted as either an azhdarchid upper jaw, azhdarchid lower jaw, or thalassodromine upper jaw (as the sister-group of Alanqa).Here, we compare it in detail to upper and lower jaws of taxa belonging to all azhdarchoid lineages.Upper Cretaceous basin-floor fans in the Vøring basin, mid Norway shelf; S. Funder et al. Chapter 50 - the Greenland ice Sheet during the past 300,000 Years: a review; L. Gernigon et al. Crustal fragmentation, magmatism, and the diachronous opening of the Norwegian-Greenland SeaThe study area is located in the Rosario Embayment on the Pacific coast of Baja California, Mexico (Fig. 1 a and b).The Rosario Embayment consists of Upper Cretaceous to Palaeocene sedimentary rocks that constitute part of the Peninsular-Ranges fore-arc basin complex (Morris and Busby-Spera, 1990).Sediments within the fore-arc basin were sourced from the Upper Jurassic to Upper Cretaceous ...Upper Cretaceous: Walhalla Thrust sheet: Details. Overview. This application provides an overview of the geology of South Carolina. It shows simplified geologic units of the state that were created from generalizing more detailed, larger scale information. The descriptions of these units reveal the types of rocks and sediments that you may find ...of the fossils. I recognized several well-known Upper Cretaceous species. (Matthes, 1933, p. 1007-1009.} A collection made from the oolitic clay in Janu­ ary 1933 by Willard Farrar of the Missouri Geological Survey and Water Resources showed that, in addition to the. Cretaceous fossils, the clay contained severalChoose from multiple DOI resolution options. Microcrystalline Quartz Generation and the Preservation of Porosity In Sandstones: Evidence from the Upper Cretaceous of the Subhercynian Basin, GermanyThe Cretaceous is divided into Early and Late Cretaceous epochs, or Lower and Upper Cretaceous series. In older literature the Cretaceous is sometimes divided into three series: Neocomian (lower/early), Gallic (middle) and Senonian (upper/late). A subdivision in eleven stages, all originating from European stratigraphy, is now used worldwide. ...The Upper Cretaceous dinosaur egg-bearing deposits in Henan Province, central China are divided into three formations in ascending order: Gaogou, Majiacun and Sigou. The Gaogou Formation belongs to alluvial fan deposits containing the fossil dinosaur egg assemblage of Faveoloolithus , Dendroolithus , Dictyoolithus , Paraspheroolithus and ...The Cretaceous Maha Sarakham Formation in this area consists of evaporite units (Lower Salt and Middle/Upper Salt) interbedded with clastic sediment. Potash minerals in the upper part of the Lower Salt Unit are associated with an underlying thick bed of rock salt. The δ 11 B values of halite (21.46 ‰-32.62‰) indicated a marine origin ...The Upper Cretaceous ammonite Pseudaspidoceras Hyatt, 1903, in north-eastern Nigeria. Bulletin of The Natural History Museum, London, Geology Series, 51 (1995), pp. 53-72. View in Scopus Google Scholar. 50. P.M.P. Zaborski. The Upper Cretaceous ammonite Vascoceras Choffat, 1898, in north-eastern Nigeria.These Upper Cretaceous oceanic red beds (CORB, e.g., Hu and Sarti, 2002, Hu et al., 2005) characterized a majority of deep-marine pelagic and hemipelagic settings in oceanic basins from the early to mid-Turonian onwards with the exception of the equatorial Atlantic (Hofmann et al., 2003).15 de set. de 2022 ... Here, we describe a new titanosaurian – Ibirania parva gen. et sp. nov. – from the Upper Cretaceous (Santonian–Campanian) São José do Rio Preto ...The mid-to Upper Cretaceous forearc basin deposits of the Yezo Group are widely distributed in central Hokkaido, Japan and western Sakhalin, Russian Far East (Fig. 1A, B; Matsumoto, 1954; Okada, 1983; Takashima et al., 2004; Shigeta and Maeda, 2005). This group shows significant lateral facies changes, and different stratigraphic divisions have ...The Cretaceous-Paleogene (K-Pg) extinction event, also known as the Cretaceous-Tertiary (K-T) extinction, was a sudden mass extinction of three-quarters of the plant and animal species on Earth, approximately 66 million years ago. The event caused the extinction of all non-avian dinosaurs.Most other tetrapods weighing more than 25 kilograms (55 pounds) also became extinct, with the ...The Upper Cretaceous theropod fossil record in Europe. Upper Cretaceous (Turonian-Maastrichtian) theropod sites in the European archipelago are mainly located in central and eastern Europe (Austria, Bulgaria, Hungary, Romania and the European part of Russia) and the Ibero-Armorican domain (France, Spain and Portugal). ...Major, trace and rare earth elements (REE) composition of sandstones from the Upper Cretaceous Sillakkudi Formation, Ariyalur Group, Cauvery Basin were studied to decipher their weathering and provenance history. Texturally, these sandstones are immature, poorly sorted and grain supported. Abundance of feldspars especially, plagioclase indicates rapid deposition of sediments from a nearby ...Upper Cretaceous sections at the Tanama River are located on the Sigirte-Nado elevation, surrounded by the Tanama River from the west, north, and east (Fig. 3 B). The Tanama River is the left-bank tributary of the Yenisei River. It is located in the north-eastern part of the West Siberian sedimentary basin (e.g. Kontorovich et al., 2014).Udanoceratops belonged to the Ceratopsia (the name is derived Greek meaning 'horned face'), a group of herbivorous dinosaurs with parrot -like beaks which thrived in North America and Asia during the Cretaceous Period. [1] It is placed within the Leptoceratopsidae, as the only Asian representative at the time, along with the North …Horizon: Kem Kem Beds, Cenomanian, Upper Cretaceous (Sereno et al., 1996). The specimen was collected by G. Pasini (2008, personal communication) together with rostral teeth of the Aptian-Cenomanian elasmobranch Onchopristis sp. (Rage & Cappetta, 2002; Russell, 1996).. The Campanian is the fifth of six ages of the Late CretIn Khalda structure, the Cretaceous section was interp Background A dinosaur census recorded during the Hell Creek Project (1999–2009) incorporates multiple lines of evidence from geography, taphohistory, stratigraphy, phylogeny and ontogeny to investigate the relative abundance of large dinosaurs preserved in the Upper Cretaceous Hell Creek Formation of northeastern Montana, USA. Overall, the dinosaur skeletal assemblages in the Hell Creek ...The Upper Cretaceous succession of the Western Interior Basin of the United States, locally yields abundant ammonites on which a standard zonation (Fig. 27.9) is based, and abundant radioisotopically dated volcanic ash beds in the region form the basis for the Late Cretaceous age model (Cobban et al., 2006; Sageman et al., 2014). The integument of the theropod dinosaur Carn A second hole, Hole 258A, was drilled to 123.5 meters below seafloor (mbsf) with the goal of improving recovery of the upper portion of the sequence. Cretaceous sediments discussed in this study consist of nannofossil ooze (258A-8 through -9), nannofossil chalk (cores 258-5 through -13) and organic-rich claystone (258-14) with a distinctive ...Sep 21, 2023 · Introduction. The Upper Cretaceous Nanxiong Formation of Jiangxi Province, southern China has yielded a diverse array of vertebrates in recent years, including theropods (Xu and Han Citation 2010; Wang et al. Citation 2013; Wei et al. Citation 2013; Lü et al. Citation 2013a, Citation 2014, Citation 2015, Citation 2016, Citation 2017; Mo and Xu Citation 2015), ornithopods (Xing et al. Citation ... Jan 1, 2022 · The record of Upper Cretaceous sauropods in Neuquén Bas...

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