Upper cretaceous.

Lameta Formation (India) The Lameta Formation, also known as the Infratrappean Beds (not to be confused with the contemporaneous Intertrappean Beds ), is a sedimentary geological formation found in Madhya Pradesh, Gujarat, and Maharashtra, India, associated with the Deccan Traps. It is of Maastrichtian age ( Late Cretaceous ), and is notable ...New Chondrichthyans from the Upper Cretaceous (Campanian-Maastrichtian) of Seymour and James Ross Islands, Antarctica Volume 88, Issue 3 Rodrigo A. Otero (a1) , Carolina Simon Gutstein (a1) , Alexander Vargas (a1) , David Rubilar-Rogers (a2) , Roberto Yury-Yañez (a3) , Joaquin Bastías (a4) and Cristián Ramírez (a4)Isolated bones of abelisauroid theropods from the Baum Group (Upper Cretaceous, Brazil), are described. They correspond to three individuals represented by fused ischia and part of the ilium, a ...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 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 ...

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 ichnofossil assemblage from the Upper Cretaceous Kem Kem beds contributes evidence for a transition from predominantly terrestrial to marine deposition. Body fossil and ichnofossil records ...Jul 9, 2009 · Upper Cretaceous Stratigraphy and Depositional Environments of Western Kansas by Donald E. Hattin, Indiana University, and Charles T. Siemers, Cities Service Company Assisted by Gary F. Stewart, Oklahoma State University. Originally published in 1978 as Kansas Geological Survey Guidebook 3. The book was reprinted in 1987 with some modifications.

16 de out. de 2022 ... Was life on Earth ever like a fairy tale? Perhaps if you go back a hundred million years ago, in the Cretaceous period. How else to call the ...

The eastern Tunisian margin is considered an Upper Cretaceous and Eocene petroleum province. It has been affected by Mesozoic rifting and Cenozoic compression. Several oil and gas shows and accumulations have been discovered in Upper Cretaceous carbonates within structural anticlinal closures. These anticlinal highs represent inherited rift platform horsts with hiatuses, unconformities and ...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 …We sample and process Upper Cretaceous rocks as a hobby out of fun. We extract the forams, photograph and identify them based on a comprehensive set of ...The carnivore Tyrannosaurus rex dominated the late Cretaceous in the north while monstrous meat-eaters like Spinosaurus, which had a huge sail-like fin on its back, …

May 9, 2022 · Recently, a construction project in the Upper Cretaceous red beds of the Ganzhou Basin, Jiangxi Province, China revealed a fossilized clutch of spheroolithid eggs. In this contribution, we briefly describe two of these eggs and their embryonic contents, accessioned at the Yingliang Stone Natural History Museum (YLSNHM) in Fujian Province, China.

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 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.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 ...When it comes to the Northwest of Argentina, most of the records come from the Cretaceous rocks of Salta Province, which yielded ceratosaurian abelisauroids like Noasaurus and Guemesia. Preliminary studies of the Los Llanos Formation at Eastern La Rioja Province recognized bone remains of Upper Cretaceous undetermined Abelisauridae and ... 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.Apr 1, 2012 · 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 ... Apr 2, 2021 · The origin of modern rainforests can be traced to the aftermath of the bolide impact at the end of the Cretaceous. Carvalho et al. used fossilized pollen and leaves to characterize the changes that took place in northern South American forests at this time (see the Perspective by Jacobs and Currano). They not only found changes in species ...

Upper Cretaceous tyrannosauroid material from North America was primarily known from upper Campanian through Maastrichtian formations until the recent discovery of derived tyrannosaurid taxa from lower-to-mid Campanian deposits in the southwestern United States. However, diagnostic material from contemporaneous deposits further north in Alberta ...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 ...Upper Cretaceous rocks reach a thickness of 2400m in the southern Ajdabiya Trough compared with 600m on the adjacent platforms. Because of its depth little is known about the northern part of the trough. The Ajdabiya Trough covers an area of 22,500km 2 and extends from the coast at Al Brayqah to the Kalanshiyu High in the south. South of the ...The Kem Kem Group (commonly known as the Kem Kem beds) 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 the Gara Sbaa Formation …Upper Cretaceous paleoenvironmental changes and petrophysical responses in lacustrine record (Songliao Basin, NE China) and marine sedimentary deposit (Goban …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 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. This taxon shows a unique combination of characters indicating that appendicular bones such as the femur, ischium and ...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 fossil record of Late Cretaceous non-hadrosaurid neornithischians from the Western Interior of North America is sparse. Parksosaurus warreni is an early Maastrichtian taxon currently known only from a skull and much of the associated postcranial skeleton and a referred isolated tooth from the Horseshoe Canyon Formation of Alberta, Canada. This article presents a detailed anatomical account ...Meanwhile King George Island, at North, contains an Upper Cretaceous to Miocene fossiliferous succession (Birkenmajer, 1980; Shen Yanbin, 1994). This age data seems to confirm the yonging of the lithologies from south to north in western Antarctic Peninsula, as was proposed, among others, by Thompson (1992) and Birkenmajer et al. (1986).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.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 Scholar(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 ichnofossil assemblage from the Upper Cretaceous Kem Kem beds contributes evidence for a transition from predominantly terrestrial to marine deposition. Body fossil and ichnofossil records ...

Figure 2.6 Regional thickness maps [isochore, in feet]: for [A] entire Upper Cretaceous section, [B] Maastrichtian to Turonian, and [C] Turonian to base of Upper Cretaceous ..31 Figure 2.7 Structure maps, in feet, for [A] top of Upper Cretaceous [Late Maastrichtian],

The Cretaceous Galula Formation is further subdivided into lower (Mtuka) and upper (Namba) members and consists entirely of non-marine deposits, including alluvial, fluvial and lacustrine mudstones, siltstones and sandstones (Fig. 1) (Roberts et al., 2010).The Mtuka Member comprises abundant conglomerates and coarse sandstones, …

The fossil remains of young dinosaurs are very rare. This juvenile hadrosaur is a cast of one of the fifteen individuals of baby Maiasaura ("good mother lizard") collected in 1978 by Princeton University from the Upper Cretaceous (80-65 million years ago) Two Medicine Formation of Teton County in western Montana. The presence of several small …Upper Cretaceous rocks and Lower Cretaceous rocks of Albian age, constitute a stratigraphic sequence that rests with marked angular discordance on older Creta­ ceous (Neocomian, Okpikruak formation) and pre- Cretaceous rocks. Lower Cretaceous rocks (fig. 30) include up to 12,000 feet of predominantly marine shale, and up to ...We describe a giant titanosaurid sauropod dinosaur discovered in coastal deposits in the Upper Cretaceous Bahariya Formation of Egypt, a unit that has produced threeTyrannosaurus-sized theropods and numerous other vertebrate taxa.Paralititan stromeri is the first tetrapod reported from Bahariya since 1935. Its 1.69-meter-long humerus is longer than that of any known Cretaceous sauropod.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 ...To further constrain the India-Asia collisional process, a combined paleomagnetic and geochronologic study has been carried out on the Upper Cretaceous Jingzhushan Formation redbeds and the Lower ...Additional 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 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 ...Thirty-four core shale samples from the Upper Cretaceous Mamu Formation, southeastern Nigeria, were studied using XRD and geochemical analyses to constrain their provenance, tectonic setting, palaeoweathering and palaeoredox conditions during deposition.X-ray diffraction analysis revealed the presence of clay minerals (kaolinite, illite and illite-smectite mixed layer) and non-clay minerals ...The Upper Cretaceous dinosaur egg-bearing deposits in Henan Province, central China are divided into three formations in ascending order: Gaogou, Majiacun and Sigou. The Gaogou Formation belongs to alluvial fan deposits containing the fossil dinosaur egg assemblage of Faveoloolithus , Dendroolithus , Dictyoolithus , Paraspheroolithus and ...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 ...The Czech scientific expedition to northern James Ross Island, Antarctica has tested the use of calcareous nannofossils as a possible tool for stratigraphic correlation of Cretaceous and Neogene strata. Only a few samples with poor nannofossil content gave useful information for biostratigraphy. The Lower Campanian Chiastozygus garrisonii Zone and Gephyrobiscutum diabolum Subzone, respectively ...

Dinosaurs from the Upper Cretaceous period in the western United States. Artwork showing the following dinosaurs (from left) Pachycephalosaurus, ...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 . Isopach maps of Upper, Middle, and Lower Cretaceous are contoured at intervals of 500 feet. Each of these three isopach maps is overprinted in color to show generalized lithofacies trends. Lower and Middle Cretaceous deltaic sandstone fairways on the western shelf provide excellent reservoir rocks for a trend containing many of the world’s ...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 , …Instagram:https://instagram. bowling wichitaambrosial hack clientpre pharmacy prerequisiteswhat is the aau 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. requirement for a master's degree8.0 cgpa The Cretaceous Period is considered the archetypical greenhouse interval, yet there is mounting evidence for intermittent cooler climatic phases throughout this geologic span. Few continental climate histories exist for the Cretaceous south of the paleoequator, and fewer still for Africa during this time. The Cretaceous Galula Formation is one of the few exposed fossiliferous continental ...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 and what is community based participatory research 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 ...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 …CONTENTS. Preface. Sequence Stratigraphy of the Upper Cretaceous (Cenomanian) Woodbine Group: Chronostratigraphic Integration of the East Texas Basin and East Texas Field, by Tucker F. Hentz and Florence Bonnaffé. Depositional Systems and Facies Variability in Highstand Fluvial- Dominated Deltaic and Lowstand Valley-Fill Systems in the Lower ...