Kalaza Formation

Kalaza Formation
Stratigraphic range: Late Kimmeridgian, 155.3–152.1 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Type	Geological formation
Underlies	Tugulu Group
Overlies	Qigu Formation, Shishugou Formation
Location
Country	China
Extent	Junggar Basin, Turpan Basin (equivalent unit)

The Kalaza Formation is a geological formation in Xinjiang, China whose strata date back to the Late Jurassic. There is some confusion with the stratigraphy of this unit, as the term is used for sediments of equivalent age in both the Junggar Basin and the Turpan Basin.^[1] Dinosaur remains are among the fossils that have been recovered from formation.^[2]

Vertebrate paleofauna

Dinosaurs of the Kalazha Formation
Genus	Species	Presence	Notes	Images
Hudiesaurus[2]	H. sinojapanorum[2]	Turpan Basin	Posterior cervical vertebra[3]
cf. Szechuanosaurus[2]	cf. S. campi[2]	Geographically located in Xinjiang Uygur Zizhiqu, China.[2]	Later found to be indeterminate theropod remains.[2]
Rhomaleopakhus	R. turpanensis[3]	Turpan Basin	Right forelimb[3]

See also

• List of dinosaur-bearing rock formations

References

1. Maisch, Michael W.; Matzke, Andreas T. (2019-01-01). "First record of a eusauropod (Dinosauria: Sauropoda) from the Upper Jurassic Qigu-Formation (southern Junggar Basin, China), and a reconsideration of Late Jurassic sauropod diversity in Xinjiang". Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen. 291 (1): 109–117. doi:10.1127/njgpa/2019/0792. ISSN 0077-7749. S2CID 135213577.
2. Weishampel, David B; et al. (2004). "Dinosaur distribution (Late Jurassic, Asia)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 550–552. ISBN 0-520-24209-2.
3. Upchurch, Paul; Mannion, Philip D.; Xu, Xing; Barrett, Paul M. (2021-12-13). "Re-assessment of the Late Jurassic eusauropod dinosaur Hudiesaurus sinojapanorum Dong, 1997, from the Turpan Basin, China, and the evolution of hyper-robust antebrachia in sauropods". Journal of Vertebrate Paleontology: e1994414. doi:10.1080/02724634.2021.1994414. ISSN 0272-4634. S2CID 245164168.