The Öösh Formation, also known as the Tevsh Formation is a geological formation of Lower Cretaceousstrata in Mongolia. Dinosaur remains are among the fossils that have been recovered from the formation.[1] It overlies folded and metamorphosedbasement strata of the Gobi region, and is capped by basalt. The succession is around 600 metres thick and consists of red claystones and sandstones, along with black thinly laminatedshales. The claystones and sandstones were deposited as part of an alluvial fan system, while the shales were deposited in lakes present in the foot of the fan.[2] Many of the fossils come from the "Cannonball beds", which comprise the lowest 60 metres of the unit and consist of green siltstone.[2]
^Weishampel, David B; et al. (2004). "Dinosaur distribution (Early Cretaceous, Asia)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 563-570. ISBN0-520-24209-2.
^ abcdAndres, B. and Norell, M.A. 2005. The first record of a pterosaur from the Early Cretaceous strata of Öösh (Övörkhangai; Mongolia). American Museum Novitates 3472: 1–6. [1]
^ abTurner, A.S.; Hwang, S.H.; Norell, M.A. (2007). "A small derived theropod from Öösh, Early Cretaceous, Baykhangor Mongolia" (PDF). American Museum Novitates (3557): 1–27. doi:10.1206/0003-0082(2007)3557[1:ASDTFS]2.0.CO;2. hdl:2246/5845. S2CID 31096081. Retrieved 2007-03-29.
^ abKielan-Jaworowska, Z., Dashzeveg, D. (1998). "Early Cretaceous amphilestid ("triconodont") mammals from Mongolia" (PDF). Acta Palaeontologica Polonica. 43 (3): 413–438.{{cite journal}}: CS1 maint: multiple names: authors list (link)
^"Tapejaroidea indet". Fossilworks. Retrieved March 4, 2022.
^Conrad, Jack L.; Daza, Juan D. (2015-08-28). "Naming and rediagnosing the Cretaceous gekkonomorph (Reptilia, Squamata) from Öösh (Övörkhangai, Mongolia)". Journal of Vertebrate Paleontology. 35 (5): e980891. doi:10.1080/02724634.2015.980891. ISSN 0272-4634. S2CID 128946074.
April 12, 2024
öösh, formation, also, known, tevsh, formation, geological, formation, lower, cretaceous, strata, mongolia, dinosaur, remains, among, fossils, that, have, been, recovered, from, formation, overlies, folded, metamorphosed, basement, strata, gobi, region, capped. The Oosh Formation also known as the Tevsh Formation is a geological formation of Lower Cretaceous strata in Mongolia Dinosaur remains are among the fossils that have been recovered from the formation 1 It overlies folded and metamorphosed basement strata of the Gobi region and is capped by basalt The succession is around 600 metres thick and consists of red claystones and sandstones along with black thinly laminated shales The claystones and sandstones were deposited as part of an alluvial fan system while the shales were deposited in lakes present in the foot of the fan 2 Many of the fossils come from the Cannonball beds which comprise the lowest 60 metres of the unit and consist of green siltstone 2 Oosh FormationStratigraphic range Berriasian Barremian 141 125 Ma PreꞒ Ꞓ O S D C P T J K Pg NTypeGeological formationSub unitsCannonball bedsUnderliesBasaltOverliesBasementThickness600 m 2 000 ft LithologyPrimarySandstone claystone shaleOtherSiltstoneLocationCoordinates44 12 N 102 42 E 44 2 N 102 7 E 44 2 102 7Approximate paleocoordinates45 00 N 103 18 E 45 0 N 103 3 E 45 0 103 3RegionOvorkhangaiCountry MongoliaOosh Formation Mongolia Contents 1 Vertebrate paleofauna 1 1 Dinosaurs 1 2 Mammals 1 3 Pterosaurs 1 4 Squamates 2 See also 3 ReferencesVertebrate paleofauna editDinosaurs edit Dinosaurs of the Oosh FormationGenus Species Location Stratigraphic position Material Notes ImagesAsiatosaurus A mongoliensis Teeth Indeterminate sauropodProdeinodon P mongoliensis Several teeth fragmentary tibia fragmentary fibula Indeterminate theropodProtiguanodon P mongoliensis Reclassified as a species of Psittacosaurus Psittacosaurus protiguanodonensisPsittacosaurus P mongoliensis nbsp Psittacosaurus fossil from the Huhteeg Svita with gastroliths in its stomach region American Museum of Natural HistoryP protiguanodonensis Junior synonym of P mongoliensisShanag 3 S ashile 3 Mammals edit Mammals of the Oosh FormationGenus Species Location Stratigraphic position Material Notes ImagesGobiconodon 4 G hopsoni 4 Cannonball Member of Oosh Formation possibly equivalent of Tevsh Formation Two upper and lower jaws PSS MAE 140 Holotype amp PSS MAE 139 nbsp Pterosaurs edit Pterosaurs of the Oosh FormationGenus Species Location Stratigraphic position Material Notes ImagesIndeterminate tapejaroid 2 5 Single cervical vertebra IGM 100 1321 2 Squamates edit Squamates of the Oosh FormationGenus Species Location Stratigraphic position Material Notes ImagesNorellius 6 N nyctisaurops Nearly complete skull with mandibles and partial hyoid GekkonomorphColor keyTaxon Reclassified taxon Taxon falsely reported as present Dubious taxon or junior synonym Ichnotaxon Ootaxon Morphotaxon Notes Uncertain or tentative taxa are in small text crossed out taxa are discredited See also editList of dinosaur bearing rock formationsReferences edit Weishampel David B et al 2004 Dinosaur distribution Early Cretaceous Asia In Weishampel David B Dodson Peter and Osmolska Halszka eds The Dinosauria 2nd Berkeley University of California Press Pp 563 570 ISBN 0 520 24209 2 a b c d Andres B and Norell M A 2005 The first record of a pterosaur from the Early Cretaceous strata of Oosh Ovorkhangai Mongolia American Museum Novitates 3472 1 6 1 a b Turner A S Hwang S H Norell M A 2007 A small derived theropod from Oosh Early Cretaceous Baykhangor Mongolia PDF American Museum Novitates 3557 1 27 doi 10 1206 0003 0082 2007 3557 1 ASDTFS 2 0 CO 2 hdl 2246 5845 S2CID 31096081 Retrieved 2007 03 29 a b Kielan Jaworowska Z Dashzeveg D 1998 Early Cretaceous amphilestid triconodont mammals from Mongolia PDF Acta Palaeontologica Polonica 43 3 413 438 a href Template Cite journal html title Template Cite journal cite journal a CS1 maint multiple names authors list link Tapejaroidea indet Fossilworks Retrieved March 4 2022 Conrad Jack L Daza Juan D 2015 08 28 Naming and rediagnosing the Cretaceous gekkonomorph Reptilia Squamata from Oosh Ovorkhangai Mongolia Journal of Vertebrate Paleontology 35 5 e980891 doi 10 1080 02724634 2015 980891 ISSN 0272 4634 S2CID 128946074 Retrieved from https en wikipedia org w index php title Oosh Formation amp oldid 1200185926, wikipedia, wiki, book, books, library,
