The Öösh Formation, also known as the Tevsh Formation is a geological
formation of
Lower Cretaceousstrata in
Övörkhangai Province,
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.
^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.
ISSN0272-4634.
S2CID128946074.
The Öösh Formation, also known as the Tevsh Formation is a geological
formation of
Lower Cretaceousstrata in
Övörkhangai Province,
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.
^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.
ISSN0272-4634.
S2CID128946074.