Bostobe Formation
The Bostobe Formation is a geological formation in Qaraghandy & Qyzylorda, Kazakhastan whose strata date back to the Late Cretaceous.
The sandstones and claystones of the formation were deposited in estuarine, fluvial-lacustrine and fluvial-deltaic environments.
Dinosaur remains are among the fossils that have been recovered from the formation. The formation is about thick and consists primarily of clay with interbeds of sand, representing an estuarine environment.Khunnuchelys lophorhothon, a trionychid turtle recovered from the formation, was initially thought to belong to a hadrosaurid dinosaur and classified as cf. Lophorhothon sp.
;Mammals
- Beleutinus orlovi
- Zhalmouzia bazhanovi
- Parazhelestes sp.
;Ornithopods
- Aralosaurus tuberiferus
- Arstanosaurus akkurganensis
- Batyrosaurus rozhdestvenskyi
;Theropods
- Troodontidae indet.
- Therizinosauria indet.
- Ornithomimosauria indet.
- Tyrannosauroidea indet.
;Pterosaurs
- Aralazhdarcho bostobensis
- Samrukia nessovi
;Turtles
- Adocus foveatus
- Anatolemys maximus
- Khunnuchelys lophorhothon
- Lindholmemys gravis
- Shachemys baibolatica
- Trionyx kansaiensis, T. onomatoplokos, T. riabinini
;Other reptiles
;Amphibians
;Fish
;Flora
