Upper cretaceous

The Upper Cretaceous succession of the Western Interior Basin of the United States, locally yields abundant ammonites on which a standard zonation (Fig. 27.9) is based, and abundant radioisotopically dated volcanic ash beds in the region form the basis for the Late Cretaceous age model (Cobban et al., 2006; Sageman et al., 2014)..

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.Madtsoiidae. Madtsoiidae is an extinct family of mostly Gondwanan snakes with a fossil record extending from early Cenomanian ( Upper Cretaceous) to late Pleistocene strata located in South America, Africa, India, Australia and Southern Europe. Madtsoiidae include very primitive snakes, which like extant boas and pythons would likely dispatch ...

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A new genus and species of rove beetle, Afristenus orapensis gen. et sp. nov., is described and figured based on one well-preserved compression fossil from the African, Upper Cretaceous fossil insect deposit, Orapa Diamond Mine in north-east Botswana.Afristenus is definitively placed in the extant subfamily Steninae based on its harpoon-like labial feeding apparatus.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 Upper Cretaceous biostratigraphy of the East European Platform (EEP) and adjacent regions has been based on the Western European macropaleontological standard (Olferiev and Alekseev, 2005), since the Turonian-Campanian siliceous deposits of the Moscow and Voronezh regions and the Volga Basin (Ulyanovsk, Volgograd and Saratov Regions) are very poor considering the faunal groups ...A new articulated postcranial specimen of an indeterminate ankylosaurid dinosaur from the Upper Cretaceous (middle-upper Campanian) Baruungoyot Formation from Hermiin Tsav, southern Gobi Desert ...

Download scientific diagram | Upper Cretaceous surface exposures in Alabama and Cretalamna bryanti sp. nov. specimen collecting localities. Scale bars equal 20 km. Full-size DOI: 10.7717/peerj ...Deep-marine sedimentation occurred from the late Triassic to mid-Cretaceous (Aptian). Further to the west, near Xialu, Matsuoka et al. (2002) also sampled cherts from the Bainang terrane. They reported Middle Jurassic (Aalenian)–Lower Cretaceous (Aptian) assemblages extracted from cherts and siliceous mudstones. 3.6. Yamdrok MélangePlanktonic 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 ... 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 ...

1991. There are described several types of Upper Cretaceous fossil amniote eggs, clutches and eggshells, collected during the Polish-Mongolian Paleontological.The paleobiology of the Cretaceous neoselachian shark,Squalicorax, has largely been based on isolated teeth. We examined partial and nearly complete skeletons of three species ofSqualicorax, S. falcatus (Aoassiz),S. kaupi (Agassiz), andS. pristodontus (Agassiz), that were collected from the U.S.A. These specimens suggest that the total body length (TL) ofS. falcatus typically measured 1.8-2. ...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 ... ….

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Background A dinosaur census recorded during the Hell Creek Project (1999-2009) incorporates multiple lines of evidence from geography, taphohistory, stratigraphy, phylogeny and ontogeny to investigate the relative abundance of large dinosaurs preserved in the Upper Cretaceous Hell Creek Formation of northeastern Montana, USA. Overall, the dinosaur skeletal assemblages in the Hell Creek ...Prince Creek Formation. / 70.0; -151.5. / 83.2; -115.9. The Prince Creek Formation is a geological formation in Alaska with strata dating to the Early Maastrichtian stage of the Late Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation.The Upper Cretaceous strata of western Europe and WIS largely represent the sedimentation in epicontinental seas, unlike the areas such as northwestern Pacific (i.e., Japan) or southern high latitudes (home for Weddelian Province), which were directly facing the deeper ocean.

The Upper Cretaceous-Paleocene turbiditic deposits of the Skole Nappe are distinguished as the Ropianka Formation (formerly as the noceramian Beds), which are at least 500 m thick (Wdowiarz, 1949; Kotlarczyk, 1978).They are overlain by the mudstone-dominated Upper Paleocene-Eocene Variegated Shale Formation (Rajchel, 1990).The Bąkowiec section of the Ropianka Formation (Leszczyny Member ...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 , …Background Dinosaur eggs containing embryos are rare, limiting our understanding of dinosaur development. Recently, a clutch of subspherical dinosaur eggs was discovered while blasting for a construction project in the Upper Cretaceous red beds (Hekou Formation) of the Ganzhou Basin, Jiangxi Province, China. At least two of the eggs contain identifiable hadrosauroid embryos, described here for ...

asl degree programs The Upper Cretaceous Israeli marine succession was influenced by two major unrelated processes: (1) Tectonic-control of the Syrian Arc fold system that differentiated the outer-shelf into ... refrigerated van for sale craigslistwhere is caliche found Upper boundary GSSP candidate section (s) None. The Jurassic ( / dʒʊˈræsɪk / juu-RASS-ik [2]) is a geologic period and stratigraphic system that spanned from the end of the Triassic Period 201.4 million years ago (Mya) to the beginning of the Cretaceous Period, approximately 145 Mya. The Jurassic constitutes the middle period of the ... 2 cor 5 21 nkjv Maiasaura. Maiasaura (from the Greek μαῖα, meaning "good mother" and σαύρα, the feminine form of saurus, meaning "reptile") is a large herbivorous saurolophine hadrosaurid ("duck-billed") dinosaur genus that lived in the area currently covered by the state of Montana and the province of Alberta, Canada, [1] in the Upper Cretaceous ... ohio lottery lucky one archivesexual assault prevention trainingindeed test score proficient The mid-to Upper Cretaceous forearc basin deposits of the Yezo Group are widely distributed in central Hokkaido, Japan and western Sakhalin, Russian Far East (Fig. 1A, B; Matsumoto, 1954; Okada, 1983; Takashima et al., 2004; Shigeta and Maeda, 2005). This group shows significant lateral facies changes, and different stratigraphic divisions have ... youtube music country songs 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 ). how can prejudice be reducedkaltura loginku medical hospital Upper Cretaceous units in the Atacama Region represent a drastic palaeogeographic change from the classic arc/back-arc scheme (Uyeda, 1982) prevalent during the Jurassic-Early Cretaceous. They represent a series of thick sedimentary and volcanic successions exposed in different structural blocks that formed a single wide volcanic-sedimentary ...