Upper cretaceous. Kutai Basin is divided into Upper Kutai, Lower Kutai, and ...

Aug 3, 2021 · The scientific paper describing the find—ti

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 ...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, …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 Lower Cretaceous (Albian) Kharita Formation is composed of sandstone interbedded with shales and siltstone. The Upper Cretaceous (Cenomanian) Bahariya Formation consists mainly of sandstone, with thin streaks of shales and limestone (Kandil 2003). The sandstones are the main gas and/or condensate pay zone.The Yezo Group is composed of mainly Upper Cretaceous marine sediments and rich in invertebrate and vertebrate fossils, including sharks, plesiosaurs, mosasaurs, turtles, pterosaurs, non-avian ...Upper Cretaceous, Paleocene, Eocene, and Oligocene deposits are characterized by sharp facies and thickness changes as a result of orogenic movements in the Zagros area. Following deposition of ...Upper Cretaceous marine mudstones are widely known as the most important source rocks in the Western African rift basins. However, geochemical studies on their occurrence and formation mechanism are scarce. In this study, a detailed geochemical investigation within a sequence stratigraphic framework was carried out to reconstruct the ...The Upper Cretaceous Wangshi Group of China has also produced leptoceratopsids, specifically Zhuchengceratops inexpectus (Xu et al. 2010), although the only other small ornithischian recovered ...ODP Leg 132, with some Upper Cretaceous sediment recovered at Sites 47, 48, 305, 577, and 810. The Cretaceous sections recovered at all sites during Leg 198 were characterized by pure nannofossil ooze in the Campanian and Maastrichtian and chert with nannofossil ooze and porcellanite in the older Cretaceous sections. The presence of ubiqui-Here we report on a new dromaeosaurid, Dineobellator notohesperus, gen. and sp. nov., consisting of a partial skeleton from the Upper Cretaceous (Maastrichtian) of New Mexico, the first diagnostic ...The scientific paper describing the find—titled "Ancient diversity and turnover of cunninghamioid conifers (Cupressaceae): two new genera from the Upper Cretaceous of Hokkaido, Japan"—has been ...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.--Purbeck Beds, unit of sedimentary rocks exposed in southern England that spans the boundary between the Jurassic and Cretaceous periods, approximately 145 million years ago. The highly varied Purbeck Beds, which overlie rocks of the Portland Beds, record a marked change in sedimentary facies,A sturgeon (Actinopterygii, Acipenseriformes) from the Upper Cretaceous of Africa. A single dorsal bony scute from the uppermost Cretaceous (Maastrichtian) marine phosphatites of central Morocco is identified as an acipenserid fish (sturgeon). The new specimen represents the first occurrence of an acipenseriform fish on the continent of Africa.Apatite U–Pb dating of dinosaur teeth from the Upper Cretaceous Nemegt Formation in the Gobi Desert, Mongolia: Contribution to depositional age constraintsAdditional resources. 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 ...A new ankylosaurian dinosaur (Ornithischia: Ankylosauria) from the Upper Cretaceous of Shanxi Province, People's Republic of China. Journal of Vertebrate Paleontology, Vol. 18, Issue. 2, p. 376. CrossRef; Google Scholar; Garcia, Géraldine and Suberbiola, Xabier Pereda 2003.Appalachia (landmass) During most of the Late Cretaceous (100.5 to 66 million years ago) the eastern half of North America formed Appalachia (named for the Appalachian Mountains ), an island land mass separated from Laramidia to the west by the Western Interior Seaway. This seaway had split North America into two massive landmasses due to a ...Apatite U–Pb dating of dinosaur teeth from the Upper Cretaceous Nemegt Formation in the Gobi Desert, Mongolia: Contribution to depositional age constraints1. 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.The Cretaceous is defined as the period between 145.5 and 65.5 million years ago,* the last period of the Mesozoic Era, following the Jurassic and ending with the extinction of the dinosaurs (except birds). By the beginning of the Cretaceous, the supercontinent Pangea was already rifting apart, and by the mid-Cretaceous, it had split into ...Feb 1, 2022 · Abstract. A new troodontid dinosaur, Papiliovenator neimengguensis gen. et sp. nov., from the Upper Cretaceous (Campanian) Wulansuhai Formation at Bayan Manduhu, Inner Mongolia, China, is described here. The holotype (BNMNH-PV030) consists of a nearly complete cranium and fragmentary postcranial bones in semi-articulation and this specimen is ... The Cenomanian is, in the ICS ' geological timescale, the oldest or earliest age of the Late Cretaceous Epoch or the lowest stage of the Upper Cretaceous Series. [4] An age is a unit of geochronology; it is a unit of time; the stage is a unit in the stratigraphic column deposited during the corresponding age. 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).Fluvial deposits of the Kaiparowits Formation at "The Blues". The Kaiparowits Formation is a sedimentary rock formation found in the Kaiparowits Plateau in Grand Staircase–Escalante National Monument, in the southern part of Utah in the western United States.It is over 2800 feet (850 m) thick, and is Campanian in age. This Upper …A new ornithopod dinosaur from the Upper Cretaceous (Maastrichtian) Snow Hill Island Formation, at James Ross Island, Antarctica is here described. This new taxon, named as Morrosaurus antarcticus gen. et sp. nov., is represented by a fragmentary right hind limb belonging to a medium-sized individual. Our phylogenetic analysis nests the new ...The Coniacian is an age or stage in the geologic timescale. It is a subdivision of the Late Cretaceous Epoch or Upper Cretaceous Series and spans the time between 89.8 ± 1 Ma and 86.3 ± 0.7 Ma (million years ago). The Coniacian is preceded by the Turonian and followed by the Santonian. [3]Cretaceous Seismicity in the United Kingdom from 1990 to 2008-02-27. By the Cretaceous the island had sunk much further in relation to the sea level. Before the end of the period, the British end was buried in Upper Cretaceous chalk. This happened because the Pacific Ocean bed swelled up causing the world's seas to rise but also, the process ...For the Upper Cretaceous they are the Cenomanian, Turonian, Coniacian, Santonian, Campanian, and Maastrichtian. The longest is the Aptian, lasting about 12 million years; the Santonian is the shortest at just under 3 million years.Cretaceous Dinosaurs in Parks. Cretaceous (145 to 66 Ma) dinosaur fossils in the NPS are geographically more scattered than the Triassic and Jurassic examples. In recent years, Alaska's parks have become significant for tracks, especially at Denali National Park and Preserve, where hadrosaur tracks are abundant.Bryce Canyon National Park (Utah), has a notable record of microfossils from ...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 …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 ...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 ...Remains of juvenile sauropods from the Upper Cretaceous Portezuelo Formation (Neuquén Group), at Barreales Lake (Neuquén Province), are identified and described. The material include a femur (14.6 cm length) and an anterior caudal vertebra (3.1 cm length). Their general morphology allows us to assign these bones to the Titanosauria.Upper Cretaceous biostratigraphy 7 Studia UBB Geologia, 2017, 61 (1-2), 5 - 20 will be achieved in the descendant species. It continues with the onset of the test morphology that occurs in the descendant, but specimens of the descendant that present features of the ancestor also occur and are more frequent in the lower portionThe Upper Cretaceous-Paleogene strata are developed in the basin, fed predominantly with alluvial and fluvial sediments with lacustrine deposits like siltstones and mudstones that are the major petroleum source rocks in all these basins (Shinn et al., 2010; Xu and Gao, 2015a; Xu et al., 2018).It is a subdivision of the Early or Lower Cretaceous Epoch or Series and encompasses the time from 121.4 ± 1.0 Ma to 113.0 ± 1.0 Ma (million years ago), approximately. The Aptian succeeds the Barremian and precedes the Albian, all part of the Lower/Early Cretaceous. The Aptian partly overlaps the upper part of the Western European Urgonian Stage.The Santonian is an age in the geologic timescale or a chronostratigraphic stage. It is a subdivision of the Late Cretaceous Epoch or Upper Cretaceous Series. It spans the time between 86.3 ± 0.7 mya ( million years ago) and 83.6 ± 0.7 mya. The Santonian is preceded by the Coniacian and is followed by the Campanian.All the sequence was determined as Upper Cretaceous by its stratigraphic position and fossil. Material and methods. The new material consists of three trunks that represent monopodial trees and a stump, all well preserved as silica permineralization (Fig. 2c-h). They lie approximately 2 km southeast of the Frontera's town (Fig. 1) in medium ...Enantiornithes were the dominant avialan clade in the Mesozoic. However, their record for the Upper Cretaceous is scarce. In this study, we present and describe Yatenavis ieujensis gen. et sp. nov., one of the youngest occurrence of an enantiornithine bird. The specimen, the distal half of a right humerus, was found in Chorrillo Formation ...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 andThe Upper Cretaceous Nenjiang lacustrine shale (K 2 n) is one of the most essential hydrocarbon source rocks in NE China with massive OM deposition across the Santonian-Campanian boundary interval, which can be correlated with the terminal stage of the last oceanic anoxic event in the Cretaceous, OAE3. This study focuses on the lower part of ...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 ).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 ...the Cretaceous and lower Tertiary and are thought to result from both paleoseismic activity in the region a11d differential compaction of sedimentary deposits (Reinhardt, 1983). Our ability to interpret the distribution of lithofacies within the Upper Cretaceous and lower Tertiary units is strongly affected by their present outcrop pattern.Request PDF | On May 1, 2014, Lida Xing and others published Upper Cretaceous dinosaur track assemblages and a new theropod ichnotaxon from Anhui Province, eastern China | Find, read and cite all ...Remains of juvenile sauropods from the Upper Cretaceous Portezuelo Formation (Neuquén Group), at Barreales Lake (Neuquén Province), are identified and described. The material include a femur (14.6 cm length) and an anterior caudal vertebra (3.1 cm length). Their general morphology allows us to assign these bones to the Titanosauria.Apatite U-Pb dating of dinosaur teeth from the Upper Cretaceous Nemegt Formation in the Gobi Desert, Mongolia: Contribution to depositional age constraints. Myu Tanabe, ... our data supports the deposition of the middle-upper Nemegt Formation during the Maastrichtian stage. Given that the depositional age of the Nemegt Formation has not ...Tryphopimpla xoridoptera Kopylov, 2010 from the Upper Cretaceous of Magadan region (Russia) has wide pterostigma, r-m completely lost and 1cu-a strongly postfurcal (Kopylov, 2010a, Kopylov, 2010b). But unlike Myanmar specimens it has a different shape of former areolet (2+3-M long), two bullae in 2m-cu, long 1-Rs in hind wing.Apr 1, 2022 · 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 ... The Santonian is an age in the geologic timescale or a chronostratigraphic stage. It is a subdivision of the Late Cretaceous Epoch or Upper Cretaceous Series. It spans the time between 86.3 ± 0.7 mya ( million years ago) and 83.6 ± 0.7 mya. The Santonian is preceded by the Coniacian and is followed by the Campanian.21 de abr. de 2020 ... The Kem Kem vertebrate assemblage, currently the best documented association just prior to the onset of the Cenomanian-Turonian marine ...The Late Cretaceous experienced significant cooling, yet a lack of low-latitude records mean the regional extent of this cooling is poorly constrained. Linnert et al. present a TEX86sea surface ...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 ...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 ...A new genus and species of an elasmosaurid plesiosaur, Futabasaurus suzukii, is described based on a partial skeleton from the Inoceramus amakusensis Zone (Lower Santonian, Upper Cretaceous) of ...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 deposits in the area have previously produced dinosaur fossils, and the Paleocene occasionally contains reworked Upper Cretaceous fossils. Based on observations of several short-lived, partial exposures in the greater vicinity (e.g., MMNS locality MS.73.030), a persistent phosphatic fossil assemblage occurs in the uppermost part of ...Upper Cretaceous stages, Western In terior formations with fossil zones 1-10, and important molluscan species (modifi ed from Stephenson and Reeside, 1938, p.1636- 38).Jun 1, 2021 · Remains of juvenile sauropods from the Upper Cretaceous Portezuelo Formation (Neuquén Group), at Barreales Lake (Neuquén Province), are identified and described. The material include a femur (14.6 cm length) and an anterior caudal vertebra (3.1 cm length). Their general morphology allows us to assign these bones to the Titanosauria. Upper Cretaceous marine sequences in the Gulf Coastal Plain (USA) span the Cretaceous–Paleogene (K–Pg) transition, allowing for detailed studies of one of the most severe extinction events of ...Dec 1, 2021 · 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 provenance of the Upper Cretaceous Nubia sandstones from four vertical sections along Qena-Safaga and Qena-Quseir roads in central Eastern Desert of Egypt was investigated based on their modal composition and geochemical data. The Nubia sandstone samples are abundant in quartz content with low feldspar and lithic fragments. Their …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).A complete Cretaceous-Paleogene stratigraphy is developed within the Longmenshan foreland basin, ... Solid/open symbols are lower/upper hemisphere projections. There are several differences in the thermal demagnetization characteristics of the samples with different lithologies and colors. For the purplish-red and brownish-red sandstones ...Sedimentation effectively terminated in the upper cretaceous (Santonian/Campanian) simultaneous with the earliest development of the Red Sea which bounds the eastern side of the Western Desert basin. The Cretaceous succession in the Komombo basin Concession as shown in Fig. 4 generally consists of six formations from …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 ... a quarry in the Upper Cretaceous Judith River Formation in Fergus County, Montana.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 Ilhabela sandstones, which represent the main reservoir unit in the Santos Basin, were deposited in a fluvial to shallow marine environment during a period of active basaltic ...The first fossils of short-tailed Pterodactyloide a were discovered in the Upper Jurassic strata of Europe. They were assigned to the genus Pterodactylus (Fig. 55; 'flight finger'), and possessed all the typical features of pterosaurs. Many different species of Pterodactylus have been found, varying mainly in size and the shape of the head.May 3, 2022 · The Yezo Group is composed of mainly Upper Cretaceous marine sediments and rich in invertebrate and vertebrate fossils, including sharks, plesiosaurs, mosasaurs, turtles, pterosaurs, non-avian ... We describe a globally rare example of a tetrapod burrow from the Upper Cretaceous Bauru Group (Bauru Basin) from Peirópolis, Minas Gerais State, Brazil. The sedimentary succession containing the burrow includes a rich vertebrate assemblage comprising fish, podocnemid turtles, mesoeucrocodylians, saurischian dinosaurs, among others.Tyrannosaurus is a genus of large theropod dinosaur.The species Tyrannosaurus rex (rex meaning "king" in Latin), often called T. rex or colloquially T-Rex, is one of the best represented theropods.It lived throughout what is now western North America, on what was then an island continent known as Laramidia. Tyrannosaurus had a much wider range …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 ...Upper Cretaceous, Paleocene, Eocene, and Oligocene deposits are characterized by sharp facies and thickness changes as a result of orogenic movements in the Zagros area. Following deposition of ...Saltasaurus (which means "lizard from Salta") is a genus of saltasaurid dinosaur of the Late Cretaceous period of Argentina.Small among sauropods, though still heavy by the standards of modern creatures, Saltasaurus was characterized by a short neck and stubby limbs. It was the first genus of sauropod known to possess armour of bony plates …Tröger K-A (1989) Problems of Upper Cretaceous inoceramid biostratigraphy and paleobiogeography in Europe and western Asia. In: Wiedmann J (ed) Cretaceous of the Western Tethys. Proceedings of the 3rd International Cretaceous Symposium Tübingen 1987. Schweizerbart, Stuttgart. Google Scholar Wani R, Gupta NS (2015) Ammonoid …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).Sep 21, 2023 · 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 2010 ; Wang et al. 2013 ; Wei The new vertebra shows affinities with those of other Upper Cretaceous abelisaurids from Madagascar and South America, such as Majungasaurus crenatissimus, Carnotaurus sastrei, Viavenator exxoni and a generically indeterminate Patagonian specimen (Museo Padre Molina specimen 99). Phylogenetic analysis recovers the Bahariya form within .... Cretaceous: A Time of Chalk. Much chalk was deposited during the CreIn this paper, we demonstrate a down-paleoslope shift in detrital zir The Dinosaur Park Formation is the uppermost member of the Belly River Group (also known as the Judith River Group), a major geologic unit in southern Alberta.It was deposited during the Campanian stage of the Late Cretaceous, between about 76.5 and 74.4 million years ago. It was deposited in alluvial and coastal plain environments, and it is bounded … The Upper Cretaceous, and in particular the Campanian-Maastri The presence of Hedycaryoxylon in several Upper Cretaceous Antarctic localities indicates the continuation of the icacinoid type of fossil wood, one of the two types prevailing in the middle Cretaceous (Wheeler & Lehman, 2009), extending into high latitudes to the early Campanian. Similarities to extant wood. Dec 1, 2021 · The Nenjiang Formation is part of the post-r...

Continue Reading