Upper cretaceous
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.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 ...
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The Yezo Group, and other Upper Cretaceous units in Japan, have yielded various marine vertebrates from all stages, although fragmentary remains dominate the fossil record (e.g, Obata et al., 1972; Sato et al., 2012). Further careful search for pliosaurid remains in these strata are necessary to verify whether the demise of the pliosaurids also ...Geography. Approximately the upper Cretaceous occupies in north central Kansas an area of twenty five thousand square miles-nearly one third of the total area of the state. The main portion of this area lies between the 38th and 40th parallels north latitude and the 97th and 100th degrees 30 minutes west longitude.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 ...
The Yezo Group is composed of mainly Upper Cretaceous marine sediments and rich in invertebrate and vertebrate fossils, including sharks, plesiosaurs, mosasaurs, turtles, pterosaurs, non-avian ...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 ...Apatite U-Pb dating of dinosaur teeth from the Upper Cretaceous Nemegt Formation in the Gobi Desert, Mongolia: Contribution to depositional age constraints. Myu Tanabe, ... our data supports the deposition of the middle-upper Nemegt Formation during the Maastrichtian stage. Given that the depositional age of the Nemegt Formation has not ...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 ...Cretaceous Period. During this period, oceans formed as land shifted and broke out of one big supercontinent into smaller ones. Continents were on the move in the Cretaceous, busy remodeling the ...
Carnotaurinae is a subfamily of the theropod dinosaur family Abelisauridae.It includes the dinosaurs Aucasaurus (from Argentina), Carnotaurus (from Argentina). The group was first proposed by American paleontologist Paul Sereno in 1998, defined as a clade containing all abelisaurids more closely related to Carnotaurus than to Majungasaurus.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 … ….
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This paper reports the first discovery of large-bodied dromaeosaurid fossil materials (Dinosauria: Theropoda) from the lower Upper Cretaceous Quantou Formation, in Changchun area, Jilin Province. The specimens include a manual ungual and a pedal penultimate phalanx. The manual ungual is the larger of the two and laterally flattened, curved and sickle-shaped from the middle to the distal end ...Abstract. A new florula, dominated by angiosperm leaves, is reported from the Upper Cretaceous (Turonian?) Malihah Formation of Saudi Arabia. The leaves are fragmentary preserved as impressions with a rust coloured, mineral coating, thus it is only possible to describe the best-preserved leaf forms as morphotaxa for the time being.
Meniscoessus robustus – Named by Othniel Charles Marsh in 1889. Remains were discovered in Maastrichtian (Upper Cretaceous) and possibly Paleocene strata of Wyoming, Montana, and South Dakota, USA, and the St. Mary's River Formation of Canada. The weight of this species is estimated to have been about 3.3 kilograms (7.3 lb).late Upper Cretaceous strata along a west-to-east transect from Virden, New Mexico, to Del Rio, Texas (Fig. 1), using ammonites and inoceramid bivalves, and (2) to provide a provisional faunal zonation for this area that links it with the better known zonation for the Western Interior (Fig. 2). Late Cretaceous ammonite faunas from southwest New ...More information: Brian A. Atkinson et al, Ancient diversity and turnover of cunninghamioid conifers (Cupressaceae): two new genera from the Upper Cretaceous …
tennessee tech division The Eocene (IPA: / ˈ iː ə s iː n, ˈ iː oʊ-/ EE-ə-seen, EE-oh-) Epoch is a geological epoch that lasted from about 56 to 33.9 million years ago (Ma). It is the second epoch of the Paleogene Period in the modern Cenozoic Era.The name Eocene comes from the Ancient Greek ἠώς (ēṓs, "dawn") and καινός (kainós, "new") and refers to the "dawn" of modern ('new') …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 ... outdoor nationals qualifying timesgoogle flights houston to las vegas A new Podocnemidinura specimen from the Upper Cretaceous Bauru Group (Paraná Basin) of southeastern Brazil was described. The Bauru Group provided an important portrait of the Brazilian Mesozoic terrestrial biota, which boasts a vertebrate fauna formed from fishes, frogs, lacertilians, crocodyliforms, dinosaurs and mammals; records of palynomorphs; and invertebrate fauna consisted of ... short term s.m.a.r.t goal 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, … kstate football season ticketsku bowlhow to solve a bernoulli equation 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, in the Upper Cretaceous Period (mid to late Campanian), about 76.7 million years ago.The Kem Kem beds in South Eastern Morocco contain a rich early Upper (or possibly late Lower) Cretaceous vertebrate assemblage. Fragmentary remains, predominantly teeth and jaw tips, represent several kinds of pterosaur although only one species, the ornithocheirid Coloborhynchus moroccensis, has been named.Here, we describe a new azhdarchid pterosaur, Alanqa saharica nov. gen. nov. sp., based ... rock city ks The Upper Cretaceous sediments of New Jersey and Delaware represent the proximal part of an eastward-thickening clastic sequence that attains its maximum thickness in the Baltimore Canyon Trough under the continental shelf. The sediments are composed of interfingering continental, coastal, and neritic facies deposited during repeated trans- swat analyssiswhirlpool hot water heater troubleshootingathletic com track and field 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.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 ...