Upper cretaceous. The eastern Tunisian margin is considered an Upper...

from 34 sections of the Upper Cretaceous of extra-Carpathian Polan

The Upper Cretaceous-Lower Paleogene succession at Gabal Qreiya area that covers six rock units, Quseir, Duwi, Dakhla, Tarawan, Esna, and Thebes formations, is reviewed through a high-resolution sequence stratigraphic analysis. Six third-order depositional sequences and their associated surfaces and systems tracts are recognized based on stratigraphic, sedimentological, and high-resolution ...1. Introduction. Ever since the Cretaceous System was first introduced, by the Belgian geologist Jean-Baptiste-Julien d'Omalius d'Halloy (1822), it has been arbitrarily divided into two or three series, i.e. lower and upper Cretaceous or lower, middle and upper Cretaceous, respectively, a situation that continues unabated today to the obvious detriment of clarity in stratigraphic communication.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 megaraptoran theropod dinosaur from the Upper Cretaceous Bajo de la Carpa Formation of northwestern Patagonia. Cret. Res. …Jul 26, 2022 · The Cretaceous period was the last and longest segment of the Mesozoic era. It lasted approximately 79 million years, from the minor extinction event that closed the Jurassic period about 145 ... The Upper Cretaceous Lameta (~infratrappean) Formation of the Jabalpur area (Madhya Pradesh, Central India) preserves one of the most diverse Late Cretaceous reptilian assemblages (largely dominated by dinosaurs) and other significant biotic elements of the Indian subcontinent. The Lameta Formation in the Jabalpur region comprises excellent ...tions of Early Cretaceous age and thirteen of Late Cretaceous age. The thickness of the entire Cretaceous section ranges between about 3,500 ft and 5,600 ft; within this range between 500 and 1,000 ft are Lower Cretaceous and the remainder are Upper Cretaceous. The entire section is thickest on the west, and thins eastward (Dyman and others, 1995).The Lo Hueco fossil site (Cuenca, Spain) is one of the most relevant localities for the study of Late Cretaceous continental vertebrate faunas from Europe. The fossil record of theropod dinosaurs from this locality is represented by scarce isolated postcranial materials that were preliminarily attributed to abelisaurids and to a possible giant bird, in addition to a large assemblage of ...Germany is located at the centre of the map. Germany is located between the geologically very old ( Precambrian) East European Craton ( Baltica) to the north and north-east (that further north is exposed as the Baltic Shield ), and the geologically young (Cenozoic) Alpine - Carpathian Orogen to the south. The corresponding crustal provinces of ...Fossiliferous deposits of the Greenhorn Limestone (Upper Cretaceous) are found on the Comanche National Grassland in southeastern Colorado. The lowest portion of the Greenhorn Limestone, the base of the Lincoln Limestone Member, contains calcarenite beds rich in disarticulated remains of marine vertebrates. We examined the composition of the ...The Cretaceous formations of North Carolina; Part 1, Invertebrate fossils of the Upper Cretaceous formations. North Carolina Geological and Economic Survey , 5 , 604 p. Google ScholarThe geological and paleoenvironmental setting and the vertebrate taxonomy of the fossiliferous, Cenomanian-age deltaic sediments in eastern Morocco, generally referred to as the “Kem Kem beds”, are reviewed. These strata are recognized here as the Kem Kem Group, which is composed of the lower Gara Sbaa and upper Douira formations. Both …The Upper Cretaceous limestones are abundantly fossiliferous with a moderately diverse fauna: in fact, the assemblages are usually mono- or oligospecific. From the analysis of the lithofacies, little differentiated physiographic zones can be hypothesized. On shelves like these, also the ecological niches are usually few because conditions are ...A new integrated biostratigraphic concept of an Upper Cretaceous series near Novi Pazar, Stara Raška region, the Vardar Zone, for Bajevica-Mur and Gradina, is based on the distribution of benthic ...The Cretaceous sedimentary basins in Mongolia are grouped into three major depositional provinces (Altai, Khangai-Khentei and Gobi) with ten basins (basins of Great Lakes, Valley of Lakes, Arkhangai, Onon, Choir-Nyalga, Choibalsan, Transaltai Gobi, Umnogobi, Dornogobi and Tamsag), which are all filled by continental deposits with abundant vertebrate and invertebrate fossils as well as plant ...The Upper Cretaceous (Turonian) Bissekty Formation of Uzbekistan has yielded many isolated bones and teeth representing a variety of non-avian theropod dinosaurs. A pedal phalanx II-2 indicates the presence of a dromaeosaurid theropod that attained a larger body size than any previously known member of that clade.The Upper Cretaceous Iharkút vertebrate locality (Bakony Mountains, Hungary) provided a diverse lizard fauna. In order to infer their food preference, jaw and tooth morphology, as well as dental ...Horner, J. R. Upper Cretaceous dinosaurs from the Bearpaw Shale (marine) of south-central Montana with a checklist of Upper Cretaceous dinosaur remains from marine sediments in North America.They are called the Glen Rose Formation and Edwards Group. The rocks east of the Balcones Escarpment are Upper Cretaceous rocks, ranging in age from 70 million to 100 million years. The Upper Cretaceous in the Austin area is composed of the Georgetown, Del Rio, Buda, and Eagle Ford Formations, as well as the younger Austin Chalk and …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 Campanian is the fifth of six ages of the Late Cretaceous Epoch on the geologic timescale of the International Commission on Stratigraphy (ICS). In chronostratigraphy, it is the fifth of six stages in the Upper Cretaceous Series.Campanian spans the time from 83.6 (± 0.2) to 72.1 (± 0.2) million years ago. It is preceded by the Santonian and it is followed …Scientific Reports (2016) Tyrannosaurids were top predators in Asia and North America during the latest Cretaceous and most species had deep skulls. Here, Lü et al. describe mature fossils of ...Anserimimus (/ ˌ æ n s ər ɪ ˈ m aɪ m ə s / AN-sər-im-EYE-məs; "goose mimic") is a genus of ornithomimid theropod dinosaur, from the Late Cretaceous Period of what is now Mongolia.It was a lanky, fast-running animal, possibly an omnivore.From what fossils are known, it probably closely resembled other ornithomimids, except for its more powerful …For five years, Chip and Joanna Gaines dominated HGTV with the popular home remodeling series known as Fixer Upper. In that time, they transformed old — sometimes condemned — homes into dream homes for their clients, and viewers got to see ...The Effect of River Valleys and the Upper Cretaceous Aquitard on Regional Flow in the Dakota Aquifer in the Central Great Plains of Kansas and Southeastern Colorado, by P. Allen Macfarlane. Published in Current Research in 1995. Bulletin 238, Part 1The 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 ...From a study of silicified fossils, and in particular the microstructure of brachiopods, from the Wilmington Sands (Upper Cretaceous) of Devon, a model of skeletal silicification is proposed. Three distinct morphologies of silica were formed, ...Individuals exhibit a large but continuous size range, some of which, with a wingspan estimated at 0.5 m, are among the smallest pterosaurs yet reported from the Upper Cretaceous, adding to other ...The Yogou Formation of the Upper Cretaceous is a potential source rock in the Termit Basin of Niger, and the TOC content of the upper member is 1.8-9 times that of the lower member. However, the influence of the sedimentary environment evolution on its organic matter heterogeneity is still unclear. In this paper, the evolution of the ...Furcatoceratops (meaning "forked horned face") is a genus of centrosaurine ceratopsid dinosaur from the Late Cretaceous Judith River Formation of Montana. The type species is Furcatoceratops elucidans. Discovery and naming NSM PV 24660, which is the holotype specimen ... NSM PV 24660 was collected from rocks of the upper Coal Ridge Member ...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.According to Skourtsis-Coroneou et al. (1995) the Upper Cretaceous deposits, mentioned as "clastic limestones" from the western to eastern part, from the external to internal Ionian zones, consist of: A. In the external (western) parts have a micritic matrix, consist of floatstones, rudstones and rare grainstones and packstones with micritic or biomicritic intercalations.The Upper Jurassic-Lower Cretaceous nonmarine rocks of the study area contain three depositional sequences. The first of these, the UJ-1 sequence, consists primarily of an aggradational systems ...Taxonomy and paleoecology of lyssacinosan Hexactinellida from the Upper Cretaceous (Coniacian) of Bornholm, Denmark, in comparison with other Postpaleozoic representatives. Abhandlungen der Senckenbergischen Naturforschenden Gesellschaft , …The fossils were unearthed from the sandstone bed of the Upper Cretaceous Quantou Formation in Shanqian Village, Liufangzi Town, Gongzhuling City, Changchun Area, Jilin Province, China. Dromaeosaurids are small to medium-sized carnivorous dinosaurs, and they occur from the Early Cretaceous to the Late Cretaceous (Turner et al., 2012).More information: Brian A. Atkinson et al, Ancient diversity and turnover of cunninghamioid conifers (Cupressaceae): two new genera from the Upper Cretaceous …In the Japanese Upper Cretaceous, elasmosaurid remains are fairly common but two short-necked lineages are represented by much smaller number of specimens (e.g. Sato et al., 2012 Carrano et al ...However, the transition of these apex predator faunas is poorly understood due to a paucity of pertinent lower Upper Cretaceous deposits and a scarcity of theropod remains from them [5,6]. Despite this, species of carcharodontosaurians have been recovered from two lower Upper Cretaceous formations (Cenomanian and Turonian) of Asiamerica and ...A carbonate hardground surface with a bryozoan and vertical borings from the Upper Ordovician of Kentucky.. Carbonate hardgrounds are surfaces of synsedimentarily cemented carbonate layers that have been exposed on the seafloor (Wilson and Palmer, 1992). A hardground is essentially, then, a lithified seafloor. Ancient hardgrounds are found in limestone sequences and distinguished from later ...Geography. Approximately the upper Cretaceous occupies in north central Kansas an area of twenty five thousand square miles-nearly one third of the total area of the state. The main portion of this area lies between the 38th and 40th parallels north latitude and the 97th and 100th degrees 30 minutes west longitude.Sand is a normal marine Upper Cretaceous sand-facies assem­ blage typical of the level-bottom shelf area. It is character­ ized by its variety of gastropods and numerous burrowing pelecypods. In contrast the fauna of the upper part of the Coffee Sand is dominated by surface-dwelling and attachedPrior to the discovery of Pyroraptor, only indeterminate Late Cretaceous dromaeosaurid material had been known in Europe (Allain and Taquet, 2000) from elsewhere in France (Buffetaut et al., 1986 ...The Upper Cretaceous Tremp Formation of the south-central Pyrenees, Spain, records part of the eastern infill of the Cretaceous-Paleogene Tremp-Grauss Basin. This basin is regarded as a foreland basin related to the anticlockwise movement of the Iberian plate beneath the Eurasia plate linked to the rifting of the Gulf of Vizcaya (e.g., Baceta ...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.stratigraphy and facies analysis of the upper cretaceous abu roash formation in abu roash area, giza, egypt Dr Hanan S Badawy Great thanks are due to Prof. Dr. Ahmed M. Abu Khadrah, Dean of the Faculty of Science, Cairo University for proposing the present point of research, kind supervision, continuous help, reading critically the manuscript ...In the Japanese Upper Cretaceous, elasmosaurid remains are fairly common but two short-necked lineages are represented by much smaller number of specimens (e.g. Sato et al., 2012 Carrano et al ...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 ...Ammonites are the most important macrofossils for biostratigraphy in the Cretaceous period (e.g., Kennedy and Cobban 1977; Kennedy 1986). This is due to the world-wide distribution of many species and a fast dispersal of hatchlings that is the main factor controlling distribution (e.g., Scheltema 1977; De Baets et al. 2015b), associated with high evolutionary rates (Kennedy 1977, Ward and ...The Upper Cretaceous to Upper Palaeocene rocks of the Zimam Formation along the southwestern escarpment of the Hun Graben of NW Libya have been stratigraphically investigated from two ...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 ...Cretaceous Period, in geologic time, the last of the three periods of the Mesozoic Era. The Cretaceous began 145.0 million years ago and ended 66 million years ago; it followed the Jurassic Period and was succeeded by the Paleogene Period (the first of the two periods into which the Tertiary Period was divided).The bone-beds of the Upper Cretaceous Wangshi Group in Zhucheng, Shandong, China are rich in fossil remains of the gigantic hadrosaurid Shantungosaurus. Here we report a new oviraptorosaur ...The Upper Cretaceous to Oligocene strata of the Cuesta de Huaco anticline in the Argentine Precordillera record sedimentation, regional deformation, and climate patterns prior to the highly ...Overburden strata are Upper Jurassic, Cretaceous and Cenozoic nonmarine and marine siliciclastic, carbonate and evaporite post-rift deposits (Mancini et al., 2003). Upper Jurassic organic rich and ...The upper Cretaceous biostratigraphic marker species in tropical areas are considered important events for the present study, and some have been incorporated and are called unique events (UE). In the graphic representation, they are identified by a double asterisk, and since they are present in less than four out of seven wells, RASC does not ...A new Podocnemidinura specimen from the Upper Cretaceous Bauru Group (Paraná Basin) of southeastern Brazil was described. The Bauru Group provided an important portrait of the Brazilian Mesozoic terrestrial biota, which boasts a vertebrate fauna formed from fishes, frogs, lacertilians, crocodyliforms, dinosaurs and mammals; records of palynomorphs; and invertebrate fauna consisted of ...Importantly, the age of Cretaceous alteration recorded in vitrophyre pod samples is indistinguishable from regional Cretaceous alteration previously documented by 40 Ar/ 39 Ar geochronology of ...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).The Late Cretaceous (100.5-66 Ma) is the younger of two epochs into which the Cretaceous period is divided in the geologic timescale. Rock strata from this epoch form the Upper Cretaceous series. The Cretaceous is named after the white limestone known as chalk which occurs widely in northern France and is famously seen in the white cliffs of ...A similar reduction trend can also be traced among the fossil pollen organs. Modern type pollen organs occur in the Upper Cretaceous (Maastrichtian or Campanian) of Canada (Serbet, 1996, Rothwell and Holt, 1997; Crane, pers. comm.), while Ginkgo liaoningensis (Liu et al., 2006) of the Lower Cretaceous bears more than two pollen sacs.Abstract and Figures. A new carcharodontosaurid theropod from the Huincul Formation (Aptian-Cenomanian, Upper Cretaceous) of Neuquén Province, Argentina, is described. Approximately the same size .... The deposits corresponding to the Upper Cretaceous Neuquén and San JoSauropod hiatus. The sauropod hiatus is a period in the Nor The specimen under study was collected during field seasons of 1998 as part of a paleontological survey of the upper Cretaceous sedimentary units of the Antarctic Peninsula. It was found partially articulated by Allen J. Kihm, of Minot State University, and is permanently housed in the South Dakota School of Mines and Technology (SDSM 78147 ... 1 de abr. de 2013 ... Sequence stratigraphy of the The Late Cretaceous (100.5-66 Ma) is the younger of two epochs into which the Cretaceous Period is divided in the geologic time scale. Rock strata from this epoch form the Upper Cretaceous Series.The Cretaceous is named after creta, the Latin word for the white limestone known as chalk.The chalk of northern France and the white cliffs of south-eastern England date from the Cretaceous Period.In open-marine accumulations, a peculiarly common mode of occurrence within Upper Cretaceous hemipelagic (marly chalk) facies of southeastern states, simple floatation of a dinosaurian cadaver into deep-water shelfal areas is the only mechanism involved (Figure 3c; Langston, 1960; Schwimmer, 1996). Such a cadaver, dried on its top side and ... Apr 1, 2022 · Of the 10 Upper Cretaceous tropical din...

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