Upper cretaceous

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.--

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 ...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 ...Geographical and geological situation of the Oliete sub-basin (Teruel, Spain). a Mesozoic basins of the Iberian Peninsula. The square indicates the location of the Oliete sub-basin (modified from Medrano-Aguado et al., 2022). b Lower Cretaceous formations of the Oliete sub-basin (modified from Aurell et al., 2018). c Stratigraphic section of the Blesa Formation in Josa with the position of the ...Occurrences of the Upper Cretaceous sediments in southwestern Slovakia. The numbers refer to the description in the text. (1) Magura nappe system, (2) Jarmuta Fm., Pieniny Klippen Belt, (3) Vienna Basin, (4) Upper Cretaceous atop of Hronic nappe, (5) Chtelnica Fm., Turonian freshwater limestones, (6) Horné Belice Group, (7) Hubina Fm., (8), Horné Belice Group (9) Upper Cretaceous sediments ...Distribution The Western Interior Seaway that covered North America during the Cretaceous. Species of Inoceramus had a worldwide distribution during the Cretaceous and Jurassic periods (from 189.6 to 66.043 Ma). Many examples are found in the Pierre Shale of the Western Interior Seaway in North America. Inoceramus can also be found …The study area consists of sediment packages deposited within the Upper Cretaceous sequence of the Anambra Basin, in the south-eastern part of Nigeria (Fig. 1). The Anambra Basin is situated at the western flank of the Southern Benue Trough, bounded to the west by the Precambrian Basement Complex rocks of western Nigeria, to the east by the ...The Cretaceous-Paleogene extinction that wiped out the nonavian dinosaurs 66 million years ago was correlated with two extreme events: The Chicxulub impact occurred at roughly the same time that massive amounts of lava were erupting from the Deccan Traps (see the Perspective by Burgess). ... providing complete coverage of the upper four Deccan ...Here we provide morphological description of new hadrosaurid specimens (vertebrae, femora) and results of the histological analysis of hadrosaurid femora, proximal fragments of a humerus and a scapula from the Upper Cretaceous high-latitude (palaeolatitude estimate of 75°N) Kakanaut locality (Chukotka, Russia).

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 ...Jun 8, 2022 · 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 ... 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 ...While they are similar, the upper torso and the chest are not the same thing. The upper torso is considered to be anything above the waist and below the neck, including the shoulders and back.The Upper Jurassic succession contains the Baicheng Fm. The Huoshiling, Shahezi, Yingcheng, Denglouku, and Quantou Fms compose the Lower Cretaceous section; and Upper Cretaceous strata include the Qingshankou (K 2 qn), Yaojia, Nenjiang (K 2 n), Sifangtai, and Mingshui Fms (Gao and Cai, 1997).. The sediments of K 2 qn and K 2 n were deposited in a semideep lake during global sea level rise (Liu ...

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.Apr 15, 2014 · 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 ... 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 …A 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.Scarce basin remnants of Cretaceous synorogenic sediments exposed in the Medvednica, Ivanščica, Žumberak Mts. and Samobor Hills of northern Croatia record the early orogenic history of the NW Dinarides. The provenance of sandstones from five clastic formations (Oštrc, Bistra, Kravljak, Vivodina and Glog) which cover a time span from Early to late Late Cretaceous was studied by combining ...The Upper Cretaceous is the last geological epoch in the Cretaceous. It began 100.5 million years ago, and ended 66 million years ago. The Cretaceous is traditionally divided into Lower Cretaceous (early), and Upper Cretaceous (late), because of the different rocks. The rocks reflect the conditions in which they were formed.

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Judith River near the confluence with the Missouri River. Named by. F.V. Hayden, 1871; [2] F.B. Meek, 1876. [3] The Judith River Formation is a fossil -bearing geologic formation in Montana, and is part of the Judith River Group. It dates to the Late Cretaceous, between 79 and 75.3 million years ago, [4] corresponding to the "Judithian" land ...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 ...The Upper Cretaceous Qingshankou (K 2 n) and Nenjiang (K 2 q) shale oil from the Changling Sag (CLS) of the Southern Songliao Basin located in NE China was studied to determine shale reservoir properties and evaluate oil potential. Multiple methods, including optical microscope, scanning electron microscope and energy dispersive spectrum analysis (SEM-EDS), nitrogen adsorption/desorption ...Apr 1, 2022 · Of the 10 Upper Cretaceous tropical dinoflagellates cysts references mentioned before (Table 2), 3 are from northern South America, and 7 are from the central Atlantic region. The tropical database compiled here contains 262 species, 164 are in the UCret localities from Venezuela, and 73 are reported in both regions (Appendix A). The Upper Cretaceous of Kansas Introduction by Erasmus Haworth. At the close of the Comanche period, already described by Professor Prosser, the outlines of the North American continent were well formed and were similar to the continent as now known excepting a narrow inland sea reaching from the southern part of the United States to beyond the limits of Canada, and probably connecting with ...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 …

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 Nemegt Basin is located in the Gobi region of Southern Mongolia (Fig. 1 A, B).During the late Cretaceous, the Gobi Desert was a landmass interior with a continental climate, covered by wooden areas and meandering and braided rivers (Gradziński, 1970; Eberth et al., 2014; Eberth, 2018).The Nemegt Basin sediments were initially subdivided by Gradziński (1970) into the Lower ...The dominant Cretaceous calcispheres. The extinct pithonellid forms dominate late Cretaceous calcisphere assemblages and can occur in rock-forming abundance 6,7,8.Before this study, their ...Upper Cretaceous (Maastrichtian and Campanian) hydrocarbon source rocks from the Latrobe Group, Gippsland Basin (Australia) have been analysed using gas chromatography-mass spectrometry (GC-MS) in order to understand their geochemical characteristics and to reconstruct palaeovegetation and palaeoclimate changes.The meaning of CRETACEOUS is of, relating to, or being the last period of the Mesozoic era characterized by continued dominance of reptiles, emergent dominance of angiosperms, diversification of mammals, and the extinction of many types of organisms at the close of the period; also : of, relating to, or being the corresponding system of rocks.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 …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 Palaeoenvironment of the Upper Cretaceous (Cenomanian–Turonian) portion of the Winton Formation, Queensland, Australia. Peer J. e5513. Syme, C.E. and Salisbury, S.W. 2018. Taphonomy of Isisfordia duncani specimens from the Lower Cretaceous (upper Albian) portion of the Winton Formation, Isisford, central-west Queensland.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 ...

If this is the case, then Gryphoceratops is the smallest adult-sized ceratopsian known from the Upper Cretaceous of North America and one of the smallest known ornithischians. More complete leptoceratopsid specimens from the Milk River Formation are required to clarify the taxonomic relationships and adult size of Gryphoceratops.

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 …Upper Jurassic to Lower Cretaceous strata from which gas and oil had been produced since the 1950s became targets for geothermal exploitation. The extensive publicly available subsurface data including seismic surveys, several cores and logs from hundreds of hydrocarbon wells, combined with understanding of the geology after decades of ...Ichthyosaur Diversification. Of all reptiles, the ichthyosaurs were the most highly specialised for aquatic life. So fully adapted to a marine existence were they that they never came ashore, but gave birth to ovoviviparous young in the sea. The babies emerged tail first, as do those of whales. (If they were born head first, they would drown.)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 ...Ages of the Upper Cretaceous formations of the Gobi are based on comparisons of the vertebrates with those of North American non-marine units, which are constrained by ammonite and palynological biozonations and calibrated by chronostratigraphical methods (Gradzinski et al., 1977, Fox, 1978, Lillegraven and McKenna, 1986, Jerzykiewicz and ...The study area consists of sediment packages deposited within the Upper Cretaceous sequence of the Anambra Basin, in the south-eastern part of Nigeria (Fig. 1). The Anambra Basin is situated at the western flank of the Southern Benue Trough, bounded to the west by the Precambrian Basement Complex rocks of western Nigeria, to the east by the ...One of the most common causes of thigh pain is muscle strain, according to WebMD. Less common causes include vascular disease, blood clots and arthritis. Some causes of upper thigh pain include:The Upper Cretaceous deposits represent significant oil reservoirs in several fields of the Gulf of Suez province, Egypt. The present work aims to study these sediments in Ras Budran oil field in view of sequence stratigraphic analysis. Five third-order depositional sequences were determined for the Upper Cretaceous section in Ras Budran field depending on the analysis and interpretation of ...

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Apr 15, 2014 · 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 ... The upper boundary of the Cretaceous is sharply defined, being placed at an iridium-rich layer found worldwide that is believed to be associated with the Chicxulub impact crater, with its boundaries circumscribing parts of the Yucatán Peninsula and extending into the Gulf of Mexico. This layer has … See moreGypsonictops. Gypsonictops is an extinct genus of leptictidan mammals of the family Gypsonictopidae, which was described in 1927 by George Gaylord Simpson. Species in this genus were small mammals and the first representatives of the order Leptictida, [1] that appeared during the Upper Cretaceous . The genus is thought to have gone extinct ...Chucarosaurus diripienda gen. et sp. nov. is a new and large titanosaurian sauropod from the Neuquén Basin, Rio Negro Province, Patagonia. The specimen was discovered in the Upper Cretaceous strata of the Huincul Formation (middle Cenomanian-lower Turonian). It includes appendicular and relatively slender elements, with a femoral total length of about 1.9 m long.The Upper Cretaceous of Kansas Introduction by Erasmus Haworth. At the close of the Comanche period, already described by Professor Prosser, the outlines of the North American continent were well formed and were similar to the continent as now known excepting a narrow inland sea reaching from the southern part of the United States to beyond the limits of Canada, and probably connecting with ...Title: Morphological variations in the ammonite Scaphites of the Blue Hill Member, Carlile Shale, Upper Cretaceous, Kansas. Author(s): Rex E. Crick. Paleo Publication Type: KU Paleontological Contributions. Publication Format: Journal article. Year of publication: 1978. Dyche Hall 1345 Jayhawk BlvdThe reservoirs of the Mishrif Formation show measured porosities up to 28% and the oils are interpreted as being sourced from: (1) Type II carbonate rocks interbedded with shales and deposited in a reducing marine environment with low salinity based on biomarkers and isotopic analysis; (2) Upper Jurassic to Lower Cretaceous age based on sterane ...Ours is the first formal description of and nomenclature for the Upper Cretaceous and Lower Paleogene geological formations of this region and we tie these names to regional correlations over multiple modern territorial boundaries. The ancient seaway left intriguing and previously unclassified phosphate deposits that, quite possibly, represent ...1 de abr. de 2013 ... Sequence stratigraphy of the lower Upper Cretaceous (Upper Cenomanian - Turonian) of the Eastern Desert, Egypt ... Late Cretaceous transgression. ….

Upper Cretaceous. 1. Introduction. One of the most fundamental problems an animal faces is sensing its environment and detecting its food. Different strategies of food detection include visual, tactile (touch), auditory, olfactory, and gustatory foraging. Each has advantages and disadvantages. Vision is effective at sensing the environment and ...While they are similar, the upper torso and the chest are not the same thing. The upper torso is considered to be anything above the waist and below the neck, including the shoulders and back.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).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 ...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 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 ...Foraminifera are found in all marine environments, they may be planktic or benthic in mode of life. The generally accepted classification of the foraminifera is based on that of Loeblich and Tappan (1964). The Order Foraminiferida (informally foraminifera) belongs to the Kingdom Protista, Subkingdom Protozoa, Phylum Sarcomastigophora, Subphylum ...The specimen comes from the upper part of the Candeleros Formation, Upper Cretaceous (Cenomanian, circa 98 Ma, Garrido, 2010) (Fig. 1). 4. Description4.1. Caudal vertebrae. The preserved caudal sequence is composed of 24 vertebrae lying on their left side, corresponding to approximately the anterior half of the tail (Fig. 2). The collected ... Upper cretaceous, [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1]