Upper cretaceous.

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 andA new genus and species of tetrablemmid spider, Electroblemma bifida n. gen. et sp., is described, from two adult males found in Upper Cretaceous (Cenomanian) amber of Myanmar. The genus is distinguished by its enormous dorsal carapace projection and highly modified chelicerae.The basement complex in Egypt, composed of granite, gneiss, schist and metamorphic rocks of Precambrian age, forms a series of rugged hills and is exposed mainly in the extreme southwestern corner of Egypt, Sinai, and along the Red Sea coast. It is covered by Upper Cretaceous to Lower Cenozoic sedimentary rocks to the north (Fig. 1).PDF | On May 20, 2022, K.M. Edgar and others published Data report: Cenozoic and Upper Cretaceous bulk carbonate stable carbon and oxygen isotopes from IODP Expedition 369 Sites U1513, U1514, and ...The only turtle closest to this size from the Upper Cretaceous of China is Nanhsiungchelys wuchingensis of Nanhsiungchelyidae, in which the carapace length is larger than 111 cm. However, this large turtle was recovered from Nanxiong County, Guangdong Province (Ye, 1966; Tong and Li, 2019).

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 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.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 ...

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 ...The Upper Cretaceous succession is quite complete, with small hiatuses mostly present in the lower part (Marcinowski Citation 1980; Walaszczyk Citation 1987). The upper Campanian-lowermost Maastrichtian interval treated in this study is exposed near the town of Solec nad Wisłą (Figure 1).Megaraptora is a theropod clade known from former Gondwana landmasses and Asia. Most members of the clade are known from the Early to Late Cretaceous (Barremian-Santonian), with Maastrichtian ...Age, Correlation, and Lithostratigraphic Revision of the Upper Cretaceous (Campanian) Judith River Formation in Its Type Area (North-Central Montana), with a Comparison of Low- and High-Accommodation Alluvial Records. The …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.

A partial skull of a pachycephalosaurid from the Upper Cretaceous Hell Creek Formation, Montana, is interpreted as a new taxon, Platytholus clemensi gen. et sp. nov. MOR 2915 does not fit into an ...

The Mesozoic extends over 187 million years from the beginning of the Triassic (252 Ma) to the end of the Cretaceous (65.5 Ma). It was a particularly important period for the geology of western Canada. During this time, several continental collisions occurred along the west coast, resulting in the formation of the Rocky Mountains and the.

Lithology and stratigraphy of the beds in the Upper Cretaceous (Upper Turonian- flint occurrences in South Limburg (the Netherlands) and Santonian) of Haute Normandie, France. Sedimentology, the neighbouring Belgium and German borderland as well 21, 1-42. as the exploitation of these flints in prehistoric times.Echinodermata are rare in the Palaeozoic and Mesozoic of New Zealand. A carpoid is known from the Devonian, a cidarid (Echinoidea) from the Upper Triassic, an ophiuroid from the Upper Cretaceous, and asteroids from the Upper Jurassic and Upper Cretaceous. Good echinoid faunas are known from the Tertiary.Paleogene Period. The Cretaceous* saw the first appearance and initial diversification of flowering plants (Angiosperms). Insects and other organisms soon evolve to take advantage of the new food sources and opportunities these plants provide. Conifers continued replacing seed ferns, ginkgos and cycads. Marine life flourished, with many groups ...The Santo Anastácio Formation (Lower Cretaceous - Albian) is constituted by reddish-yellow massive/rooted paleosols generated over aeolian sandstones (draa facies association according Batezelli, 2015).The Araçatuba Formation (Upper Cretaceous - Campanian) is constituted by greenish to red very fine-grained silty sandstones and sandy siltites, with normal gradation, and planar-parallel ...A nearly complete skeleton of a new hadrosaurid, Kamuysaurus japonicus gen. et sp. nov., was discovered from the outer shelf deposits of the Upper Cretaceous Hakobuchi Formation of the Yezo Group ...Tandon (2000) worked extensively on the sedimentology of the Lameta Formation in the Phutlibaori area and interpreted the Maastrichtian coastline (Fig. 1).The Lameta Formation of the Phutlibaori area consists of friable, medium- to coarse-grained and well-sorted glauconitic sandstone (Fig. 2, Fig. 3 a).The lower part of the section is a large-scale trough cross-stratified glauconitic sandstone.

Petroleum Geoscience13 Sep 2023. Radioactive heat production variations in the Faroe–Shetland Basin: key new heat production, geological and geochronological data for regional and local basin modelling. Petroleum Geoscience4 Sep 2023. The Upper Cretaceous petroleum system of the East Beni Suef Basin, Egypt: an integrated …Titanosauriform sauropod dinosaurs were once considered rare in the Upper Cretaceous of Asia, but a number of titanosauriforms from this stratigraphic interval have been discovered in China in recent years. In fact, all adequately known Cretaceous Asian sauropods are titanosauriforms, but only a few have been well studied, lending significance to any new anatomical information that can be ...Sections of the Upper Cretaceous (Coniacian to Campanian) Niobrara Formation in two cores from Kansas and Colorado, the Amoco Rebecca Bounds and USGS Portland 1, respectively, were examined by hyperspectral core imaging and analysis. A spectral imaging system combining high-resolution photography (50 μm), 3D laser profiling (20 μm), and near-visible + short-wave infrared reflectance spectroscopyThe 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 ...The Chalk Group (often just called the Chalk) is the lithostratigraphic unit (a certain number of rock strata) which contains the Upper Cretaceous limestone succession in southern and eastern England. The same or similar rock sequences occur across the wider northwest European chalk 'province'. It is characterised by thick deposits of chalk, a soft porous white limestone, deposited in a marine ...The Cretaceous formations of southwestern Arkansas consist largely of unconsolidated sand, clay, and marl, but include some beds of limestone, sandstone, and chalk. They rest on a pre-Cretaceous erosion surface, which is cut on folded and faulted Paleozoic rocks and dips to the south and southeast at about 100 feet per mile. The Cretaceous beds dip south and southeast from 65 to 80 feet per mile.Abstract: The Alpine Orogen contains in South East Europe, from the Carpathians to the Balkans-Srednogorie, an Upper Cretaceous, ore bearing igneous belt: a narrow elongated body which runs discontinously from the Apuseni Mountains in the North, to the western part of the South Carpathians (Banat) in Romania, and further South to the Carpathians of East Serbia and still further East to ...

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).

(S.) scabra was recorded from the upper Albian of the South Rifian Ridges, northwestern Morocco (Benzaggagh, 2016) and Sinaï in Egypte; the Coniacian-Santonian, the Campanian, and probably the Maastrichtian of Sinaï; the Upper Cretaceous of Tunisia, England, Portugal, Bulgaria, Italy, France, Austria, Germany, Madagascar, and India (El-Hedeny ...The Upper Cretaceous deposits of northwestern Colombia accumulated in two regions with distinct tectonic settings. The eastern deposits, consisting of Turonian-Maastrichtian rocks from the Upper ...More information: Brian A. Atkinson et al, Ancient diversity and turnover of cunninghamioid conifers (Cupressaceae): two new genera from the Upper Cretaceous …NMMNH locality 3033, Allison Member of the Menefee Formation, Upper Cretaceous (early Campanian), Sandoval County, New Mexico, USA (Figs. 2, 3). The type material of Menefeeceratops sealeyi gen. et sp. nov. is an associated incomplete skeleton of a single individual (NMMNH P-25052) collected over an area of about 13 m 2 (Williamson 1997) (Fig. 3).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 ...Upper boundary definition: FAD of the Planktonic Foraminifer Rotalipora globotruncanoides: Upper boundary GSSP: Mont Risoux, Hautes-Alpes, France: Upper GSSP ratified: 2002: The Early Cretaceous (geochronological name) or the Lower Cretaceous (chronostratigraphic name) is the earlier or lower of the two major divisions of the ...Upper Cretaceous and Lower Cretaceous aquifers are transboundary aquifers which extend outside the political east boundary of Egypt to Negev, in Palestine (Issar et al. 1972; Nour 1998). The Upper Cretaceous limestone and the Lower Cretaceous sandstone aquifers extend in central and northern Sinai and are the main source of water in this area.

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 ...

Titanosauriform sauropod dinosaurs were once considered rare in the Upper Cretaceous of Asia, but a number of titanosauriforms from this stratigraphic interval have been discovered in China in recent years. In fact, all adequately known Cretaceous Asian sauropods are titanosauriforms, but only a few have been well studied, lending significance to any new anatomical information that can be ...

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 attachedThe 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 ankylosaurid dinosaur, Tarchia tumanovae sp. nov., has been recovered from the Upper Cretaceous Nemegt Formation of Mongolia. It includes a well-preserved skull, dorsal, sacral, caudal ...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.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 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 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.The fossil record of basal paravians in Gondwana is still poorly known, being limited to the Cretaceous unenlagiids from South America and the problematic Rahonavis from Madagascar. Here we report on a new paravian from the Cenomanian-Turonian (Late Cretaceous) of Río Negro province, NW Patagonia, Argentina. The new taxon exhibits a derived bird-like morphology of the forelimbs (e.g., robust ...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 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 ...The Cretaceous (IPA: / k r ɪ ˈ t eɪ ʃ ə s / krih-TAY-shəs) is a geological period that lasted from about 145 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the longest.At around 79 million years, it is the longest geological period of the entire Phanerozoic.The name is derived from the Latin creta, "chalk", which is abundant in the latter ...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 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]Winton Formation. / -22.3; 143.1. / -51.8; 134.1. The Winton Formation is a Cretaceous geological formation in central-western Queensland, Australia. It is late Albian to early Turonian in age. [2] The formation blankets large areas of central-western Queensland. It consists of sedimentary rocks such as sandstone, siltstone and claystone.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 ...Upper Paleocene sediments recovered on the Southern Jan Mayen Ridge (Polteau et al., 2019) are rich in reworked Late Cretaceous marine and reworked early Paleocene terrestrial palynomorphs similar to the Egga Member (Lyck and Stemmerik, 2000), supporting the presence of exposed Mesozoic basins south of the Mímir High before breakup, possibly ...Instagram:https://instagram. toss pillow covers 20x20tractor supply game bird feedpin system co ukku freshman move in 2022 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 swot explainedmuncie.craigslist The Cretaceous strata that were drilled include the Upper Cretaceous Mingshui Fm, the Sifangtai Fm, the Nenjiang Fm, the Yaojia Fm, the Qingshankou Fm, the Quantou Fm, the Lower Cretaceous Denglouku Fm, the Yingcheng Fm, and the Shahezi Fm. From the SK-2e borehole, a total length of 130.47 m of core was recovered for Nenjiang Fm.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. sbatch options Theropod and other dinosaurian tracks from the upper Lower Cretaceous of northeastern China: overlooked Fuxin Biota records reinvestigated. , Cretaceous Research, 135 105190, 1-9The only turtle closest to this size from the Upper Cretaceous of China is Nanhsiungchelys wuchingensis of Nanhsiungchelyidae, in which the carapace length is larger than 111 cm. However, this large turtle was recovered from Nanxiong County, Guangdong Province (Ye, 1966; Tong and Li, 2019).The Bohemian Cretaceous Basin was an intra-continental basin formed during the Cenomanian-Santonian (100.5-83.6 Ma) as a seaway between the Boreal Sea and Alpine Ocean (Fig. 1).The basin originated by the reactivation of a fault system in the Variscan basement of the Bohemian Massif, and combined features of an epeiric sea formed during global transgression with those of a tectonically ...