Upper cretaceous.

The authors report a new genus and species of titanosaurian sauropod, Abditosaurus kuehnei, from the Late Cretaceous (ca. 70.5 Ma) of Spain. A. kuehnei groups phylogenetically with South American ...

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Parksosaurus (meaning "William Parks's lizard") is a genus of neornithischian dinosaur from the early Maastrichtian-age Upper Cretaceous Horseshoe Canyon Formation of Alberta, Canada.It is based on most of a partially articulated skeleton and partial skull, showing it to have been a small, bipedal, herbivorous dinosaur. It is one of the few …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 …The Hell Creek Formation (HCF), from the upper Great Plains of the North American Western Interior remains the global standard for understanding terrestrial Cretaceous–Paleogene (K–Pg) extinction events. This is because the HCF preserves an extraordinarily abundant and diverse terrestrial biota within the same stratigraphic units.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 ...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.

Two species of the heteromorph ammonite genus Diplomoceras Hyatt are described from the Upper Cretaceous of the James Ross-Seymour Islands area, Antarctica. The late Campanian-early Maastrichtian D. lambi Spath has a relatively high rib density, whereas D. maximum n. sp. has a lower rib density and is known only from the uppermost Maastrichtian of the Lopez de Bertodano Formation on ...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 ...

depth diagrams delineating the chronology of the Upper Cre- taceous sequences as well as Late Cretaceous sedimentation rates. We use this sequence ...The Turonian is, in the ICS' geologic timescale, the second age in the Late Cretaceous Epoch, or a stage in the Upper Cretaceous Series.It spans the time between 93.9 ± 0.8 Ma and 89.8 ± 1 Ma (million years ago). The Turonian is preceded by the Cenomanian Stage and underlies the Coniacian Stage.. At the beginning of the Turonian an oceanic anoxic …

Arambourgiania Philadelphias (ARAMBOURG 1959) from the Maastrichtian (Upper Cretaceous) of Ruseifa, Jordan, is one of the largest pterosaurs known and was an animal comparable in size to the North ...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, southern Tibet. Provenance drastically changed from the ...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 Cretaceous subsurface stratigraphy and structure of coastal Georgia and South Carolina is based on the study of 24 wells along two transects, one extending across the seaward-dipping sedimentary basin termed the 'Southeast Georgia Embayment' northeastward to the crest of the Cape Fear Arch, and the other alined east-west, parallel to the basin axis and including the COST GE-l well on the Out Kem Kem Group. The Kem Kem Group (commonly known as the Kem Kem beds [2]) is a geological group in the Kem Kem region of eastern Morocco, whose strata date back to the Cenomanian stage of the Late Cretaceous. Its strata are subdivided into two geological formations, with the lower Ifezouane Formation and the upper Aoufous Formation, with …

Smaller calcareous benthic foraminiferal fauna consists of 198 species with observed stratigraphic ranges from upper Cretaceous to early Paleogene are documented from Cauvery Basin. One species has been described as new species. This compilation is based on well cutting samples of 17 exploratory wells from sub-surface litho units Kamalapuram Formation of early Eocene — Paleocene age and the ...

Introduction. The Menefee Formation represents one of the most promising frontiers for exploring the early evolution of major dinosaur groups in Laramidia, the Upper Cretaceous landmass consisting of Mexico, the western United States, western Canada, and Alaska (Fig. 1 in Sampson et al. (2010)).Dating to approximately 84-78 million years ago (Siemers & King, 1974; Molenaar et al., 2002 ...

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 ...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) 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.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.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 …

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 average modal composition (Q94.2F1.3R4.5) classifies them as ...The 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 …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 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 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 ...

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.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.

Upper GSSP ratified. 2002 [3] The Albian is both an age of the geologic timescale and a stage in the stratigraphic column. It is the youngest or uppermost subdivision of the Early/Lower Cretaceous Epoch / Series. Its approximate time range is 113.0 ± 1.0 Ma to 100.5 ± 0.9 Ma (million years ago).The Lameta Formation (Upper Cretaceous) is exposed in parts of central and western India as detached outcrops and covers an area of nearly 5000 km2. It generally rests on Precambrian and "Gondwana" rocks and is invariably capped by Deccan Trap volcanic flows. In the Nand and Dongargaon areas of the Chandrapur and Nagpur districts of Maharashtra ...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).The largest pterosaur discovered in South America and one of the largest flying vertebrates in the world is described. Thanatosdrakon amaru gen. et sp. nov. is a new azhdarchid found in the upper-most levels of the Plottier Formation (upper Coniacian-lower Santonian, Neuquén Basin), Mendoza, Argentina.Two specimens were identified, the holotype (UNCUYO-LD 307) and the paratype, with an ...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 …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 Mesaverde Group in the Piceance Basin, western Colorado, contains thick sections of low porosity, low permeability sandstones that are reservoirs for large accumulations of hydrocarbon gas. The Mesaverde sandstones are lithic arkoses and feldspathic litharenites, containing quartz, plagioclase, variable K-feldspar, chert ...

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 ...

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 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 Ingersoll shale, a thin (<1 m) clay-dominated lens within the Upper Cretaceous Eutaw Formation exposed in Russell County, Alabama, contains an exceptionally well-preserved, primarily ...In the Songliao Basin two major sets of organic rich source rocks developed during the Upper Cretaceous, the Qingshankou (K 2 q 1 + 2) and Nenjiang (K 2 n 1 + 2) formations. The source rocks associated with Nenjiang Formation were deposited during the largest lacustrine transgression, as the distribution of this set of source rocks exceeds the ...Tlatolophus galorum, gen. et sp. nov., a parasaurolophini dinosaur from the upper Campanian of the Cerro del Pueblo Formation, ... Before the present research, this subfamily was represented by 22 genera and 28 species recovered from Upper Cretaceous deposits of North America, Asia, Africa, and Europe (Table 1) ...The Upper Cretaceous (Campanian-Maastrichtian) turbidites of the central Pontides were deposited in a forearc setting following the oceanic opening of the Black Sea basin. In this study, we report new U–Pb detrital zircon ages, petrographic data, and paleocurrent measurements from the Upper Cretaceous (Campanian-Maastrichtian) turbidites.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 …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 upper Cretaceous Naparima Hill Formation, a primary source rock for conventional oil and gas reservoirs in Southern and Columbus basins, Trinidad is now considered an unconventional reservoir ...

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 ...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 ...Mesaverde Formation or Mesaverde Group (Upper Cretaceous) at surface, covers 1 % of this area. Mesaverde Formation (north Wyoming) - Light-colored massive to thin-bedded sandstone, gray sandy shale, and coal beds. In Jackson Hole locally contains gold-bearing quartzite conglomerate. North of North Fork Powder River east of the Bighorn Mountains ...Section 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 ...Instagram:https://instagram. salt mines kssam ireland baseballnafta stand foraba disclosures Introduction. The Menefee Formation represents one of the most promising frontiers for exploring the early evolution of major dinosaur groups in Laramidia, the Upper Cretaceous landmass consisting of Mexico, the western United States, western Canada, and Alaska (Fig. 1 in Sampson et al. (2010)).Dating to approximately 84-78 million years ago (Siemers & King, 1974; Molenaar et al., 2002 ... 2007 ford fusion fuse box locationarts integration research 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 …The hard skeletons of belemnites (the guard or. rostrum) are common in the Upper Cretaceous. chalks and marls of Boreal Europe, and it is here. phylogeny of the belemnites has been worked. out ... grambling state university ticket office They represent the easternmost occurrence of Upper Cretaceous pelagic red beds of the Tethys. Late Cretaceous oxic oceanic conditions extended into the southern Tethys because the formation was deposited in southern palaeolatitudes. Therefore, the change from a dysoxic/anoxic to an oxic bottom ocean environment during the Late Cretaceous was at ...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.