Upper cretaceous

A similar reduction trend can also be traced among the fossil pollen organs. Modern type pollen organs occur in the Upper Cretaceous (Maastrichtian or Campanian) of Canada (Serbet, 1996, Rothwell and Holt, 1997; Crane, pers. comm.), while Ginkgo liaoningensis (Liu et al., 2006) of the Lower Cretaceous bears more than two pollen sacs..

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 ...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. Mo et al. (2020) also found PAHs compounds (e.g., retene, pyrene, perylene, benzo[h]fluoranthenes, benzo-pyrene) in the Upper Cretaceous Nenjiang Formation in Well JTD1 from the Western Slope Area in the Songliao Basin, which they interpreted to be from terrestrial inputs. Download : Download high-res image (505KB) Download : Download full-size ...

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The record of Upper Cretaceous sauropods in Neuquén Basin is the richest from South America. It includes about 32 different species, most of them belonging to titanosaurs (Salgado and Bonaparte, 2007; Novas, 2009). To these, is added here the new genus and species, Menucocelsior arriagadai.Jan 19, 2023 · The Lo Hueco fossil site (Cuenca, Spain) is one of the most relevant localities for the study of Late Cretaceous continental vertebrate faunas from Europe. The fossil record of theropod dinosaurs from this locality is represented by scarce isolated postcranial materials that were preliminarily attributed to abelisaurids and to a possible giant bird, in addition to a large assemblage of ... A palynological and organic geochemical study of the Upper Cretaceous deposits cropping out in the southwestern part of the Transylvanian Basin (Petreşti section) has been carried out. The samples were collected from the marine Bozeş as well as from the overlying continental Sebeş formations, with main focus on the Bozeș Formation.The Upper Cretaceous in Texas is a proven prolific hydrocarbon system. The “Eaglebine” in Central Texas, which includes both the Eagle Ford and Woodbine intervals, is an emerging play with promising results. However, stratigraphic architecture in this region is poorly understood when compared to that of the Maverick Basin and East Texas Basin.

A mixed Upper Cretaceous carbonate‐shale succession is well exposed in the Gyabukeqing section of Guru town, Yadong County, southern Tibet, which tectonically belongs to the southern Tethyan ...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 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 achieving their peak abundances and diversity.Feb 9, 2011 · 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 ... 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.

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 ; WeiOotaxa placed within Laevisoolithidae have previously been described from the Upper Cretaceous of India, Mongolia, Morocco, as well as the Lower Cretaceous of Japan and include Laevisoolithus ...zonation came from the Upper Cretaceous sections cropping out in a series of small to. large natural exposures, several quarries and three boreholes located in central, eastern and. ….

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A prior study involved 78 Collembola specimens preserved in Upper Cretaceous (Campanian) amber from Canada. This work deals with 109 specimens from the mid Cretaceous (Cenomanian or possibly slightly lower) of Myanmar, 37 of which have been identified to the generic level; 14 new species are described.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 …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 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.The Bajo de la Carpa Formation is a geologic formation of the Neuquén Basin that crops out in northern Patagonia, in the provinces of Río Negro and Neuquén, Argentina.It is the oldest of two formations belonging to the Río Colorado Subgroup within the Neuquén Group.Formerly, that subgroup was treated as a formation, and the Bajo de la Carpa …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 ...

music therapy tunes The hydrocarbon can also be generated from the Upper Cretaceous or Tertiary marine shale if they are buried in the deeper depression center (e.g., below thick turbidite fan), which migrates into the Upper Cretaceous and Tertiary reservoirs (especially the turbidite reservoir), and the seal is contemporaneous marine shale.Thorough sedimentological and palaeontological analyses of four expanded Upper Cretaceous sections in northern Tademait had allowed us to address and reconsider the stratigraphical framework of the so-called 'Continental Intercalary' and 'Hamada series' in this remote Saharan area. These four sections (i.e., Meguidene, Gara Samani, Oued El Mezaourou-Gour Louazouaza, and El Menia ... ku mu gamebars to watch boxing In Khalda structure, the Cretaceous section was interpreted on the seismic sections covering the Khalda Oil Field. It is indicated that the Upper Cretaceous Abu Roash and the Lower Cretaceous Alam-El Bueib formations have been affected by normal faulting. Though the implication of folding is minimized, it is traceable in the field.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 ... 26 in schwinn mountain bike The Upper Cretaceous strata are either devoid of microfauna or contain few agglutinated taxa suggestive of continental to brackish water settings. The development of calcareous benthic foraminiferal assemblages in Paleogene strata of the study area signaled the incursion of open marine neritic conditions. Influx of sandy sediments at some ...Despite the abundant literature on limnic Cretaceous ostracode faunas, the database on mid-Late Cretaceous taxa is still scarce. The Songliao Basin in northeastern China preserves a diverse assemblage of ostracode fossils from the Santonian–Campanian Nenjiang and Sifangtai formations. lesson plans memehow good is kansas basketballkansas resources Between 1999 and 2008 the CGS mapped and published open-file reports covering twenty preliminary 7.5 minute quadrangles in the area between Colorado Springs and Denver. Most of these quadrangles contain exposures of Upper Cretaceous through Eocene strata deposited as synorogenic sedimentary units that filled the Laramide Denver Basin. In this report, Dr. Jon Thorson, who […] leaven newspaper Tröger K-A (1989) Problems of Upper Cretaceous inoceramid biostratigraphy and paleobiogeography in Europe and western Asia. In: Wiedmann J (ed) Cretaceous of the Western Tethys. Proceedings of the 3rd International Cretaceous Symposium Tübingen 1987. Schweizerbart, Stuttgart. Google Scholar Wani R, Gupta NS (2015) Ammonoid … anticlinesdeath knight leveling talents wotlkthreats points Aerotitan sudamericanus, from the Upper Cretaceous of the Neuquén Basin (Patagonia, Argentina), is known from a partial jaw fragment which has been interpreted as either an azhdarchid upper jaw, azhdarchid lower jaw, or thalassodromine upper jaw (as the sister-group of Alanqa). Here, we compare it in detail to upper and lower jaws of taxa ...Apr 1, 2023 · The Upper Cretaceous Qingshankou Formation in the Songliao Basin, NE China is known to contain excellent petroleum source rocks. In addition, it serves as a valuable record to study depositional conditions within the water column and climatic change.