The Kota Formation is a geological

formation Formation may refer to: Linguistics * Back-formation, the process of creating a new lexeme by removing or affixes * Word formation, the creation of a new word by adding affixes Mathematics and science * Cave formation or speleothem, a secondary ...

in India. The precise age of Kota Formation are uncertain, but it dates from the

Early Early may refer to: History * The beginning or oldest part of a defined historical period, as opposed to middle or late periods, e.g.: ** Early Christianity ** Early modern Europe Places in the United States * Early, Iowa * Early, Texas * Early ...

Middle Jurassic The Middle Jurassic is the second epoch of the Jurassic Period. It lasted from about 174.1 to 163.5 million years ago. Fossils of land-dwelling animals, such as dinosaurs, from the Middle Jurassic are relatively rare, but geological formations ...

, and is split into a Lower Member and Upper Member.Prasad GVR, and Manhas BK. 2007
A new docodont mammal from the Jurassic Kota Formation of India
Palaeontologia electronica, 10.2: 1-11 The lower member is thought to be

Hettangian The Hettangian is the earliest age and lowest stage of the Jurassic Period of the geologic timescale. It spans the time between 201.3 ± 0.2 Ma and 199.3 ± 0.3 Ma (million years ago). The Hettangian follows the Rhaetian (part of the Triassi ...

Pliensbachian The Pliensbachian is an age of the geologic timescale and stage in the stratigraphic column. It is part of the Early or Lower Jurassic Epoch or Series and spans the time between 190.8 ± 1.5 Ma and 182.7 ± 1.5 Ma (million years ago). The ...

.Weishampel, David B; et al. (2004). "Dinosaur distribution (Early Jurassic, Asia)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 534–535. . While the upper unit is thought to be

Toarcian The Toarcian is, in the ICS' geologic timescale, an age and stage in the Early or Lower Jurassic. It spans the time between 182.7 Ma (million years ago) and 174.1 Ma. It follows the Pliensbachian and is followed by the Aalenian. The Toarc ...

, but may possibly extend into the

Aalenian The Aalenian () is a subdivision of the Middle Jurassic Epoch/ Series of the geologic timescale that extends from about 174.1 Ma to about 170.3 Ma (million years ago). It was preceded by the Toarcian and succeeded by the Bajocian. Stratigraphic ...

. It conformably overlies the

Dharmaram Formation The Upper Dharmaram Formation is an Early Jurassic geologic formation found in Andhra Pradesh, India. It is of Sinemurian age ( Early Jurassic), and dinosaur remains are among the fossils that have been recovered from the formation.Weisham ...

which is Late Triassic to earliest Jurassic and is unconformably overlain by the

Early Cretaceous The Early Cretaceous (geochronological name) or the Lower Cretaceous ( chronostratigraphic name), is the earlier or lower of the two major divisions of the Cretaceous. It is usually considered to stretch from 145 Ma to 100.5 Ma. Geology Pr ...

Gangapur Formation. The lower member is approximately 100 m thick while the upper member is 490 m thick. Both subunits primarily consist of mudstone and sandstone, but near the base of the upper unit there is a 20-30 metre thick succession of limestone deposited in a freshwater setting.

Fossil content

Vertebrates

Indeterminate

thyreophora Thyreophora ("shield bearers", often known simply as "armored dinosaurs") is a group of armored ornithischian dinosaurs that lived from the Early Jurassic until the end of the Cretaceous. Thyreophorans are characterized by the presence of bod ...

n remains geographically present in

Telangana State Telangana (; , ) is a state in India situated on the south-central stretch of the Indian peninsula on the high Deccan Plateau. It is the eleventh-largest state and the twelfth-most populated state in India with a geographical area of and 35, ...

, India. These were given the name ''

Andhrasaurus This list of informally named dinosaurs is a listing of dinosaurs (excluding Aves; birds and their extinct relatives) that have never been given formally published scientific names. This list only includes names that were not properly published ...

'' by Roman Ulansky in 2014.

Invertebrates

References

{{reflist Geologic formations of India Jurassic System of Asia Jurassic India Sinemurian Stage Pliensbachian Stage Toarcian Stage Hettangian Stage Mudstone formations Limestone formations Sandstone formations Lagoonal deposits Fossiliferous stratigraphic units of Asia Paleontology in India Formations

Fossil content

Vertebrates

Invertebrates

See also

References