Kota Formation

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.

[3] The last member is mostly made of broad sandstone sheets with large clay casts associated with fluvial channels, and has an extension that can be easuly seen on several continuous kilometers.

[4][5] The Uppermost section of the unit is mostly made of limestones and is overlain on an angular unconformity by the Gangapur Formation.

There are no magmatic rocks or volcanic ash beds associated with the Kota Formation, which means that its age cannot be determined directly through radiometric dating.

Krishnan (1968), Jain (1973), and Yadagiri and Prasad (1977) favored an Early Jurassic age based on the fish fauna.

[13] The associated facies of sandstone and limestones are likely related to playa-type lake, with nearby fluvial currents, part of low gradient hanging wall alluvial fans, being deposited on it´s margin.

[14] More recent works have proven the basin hosted in the Early Jurassic a freshwater carbonate wetland marked by the presence of limestones.

[1] The environmental model proposed include a depositional cycle marked by several facies types, A for the sublittoral zones of shallow water bodies, followed by palustrine environments, including surfaces with abundance of influence of both plants and animals, specially rhizobrecciation indicating active colonization of the margins by plants, having a similar deposition to the modern Las Tablas de Daimiel wetlands.

Microbial biomats likely developed on shallow waters, while rhizoliths increased it´s presence of abandoned channel fills and pedogenic facies indicate drought seasons.

Thin sandy layers suggest that freshwater influxes occurred, forming carbonate bodies near water discharge points.

As the water returned to being more alkaline, carbonates could form again, supporting freshwater Bivalvia, similar to modern geothermal areas of New Zealand.

The most dominant genus locally and the main indicator of both fluvial and lacustrine settings D. kingi Around 120 carapaces and valves A freshwater ostracodan of the Family Darwinulidae.

The most abundant Estheriid in the region and the key element of the Estheriina biozone E. indijurassica Valves A freshwater clam shrimp of the family Estheriininae.

The second key element of the Estheriina biozone L. crustabundis[18] Valves A freshwater clam shrimp of the family Lioestheriidae.

Archimesoblatta[20] A. shiva Tasch outcrop K-2 bed 8 Right forewing tegmen A mesoblattinid cockroach Coleopteron[22] C. sp.

Kotaphialtites[23] K. frankmortoni Sirpur Taluka, Tasch's K1 outcrop bed 2(A) MCZ 11909, Isolated wing An ephialtitid hymenopteran.

Xyelula[23] X. alexandri Kota Formation outcrop K-2 MCZ 11831, well preserved wing A sepulcid hymenopteran.

indicus Paikasigudem village VPL/JU/KM/13, lower left molar A dubious mammal of the group Eutriconodonta.

This Genus is known from the Early Cretaceous of Morocco, what has been used to suggest a minimum Berrasian age for the Upper Kota Formation Gondtherium[33] G. dattai Paikasigudem village VPL/JU/KM 12 right lower molar A mammal of the family Docodontidae Indotherium[35] I. pranhitai 5 km west of Yamanapalli GSI20795, right upper molar A mammaliform of the family Morganucodontidae.

[36] Indobaatar[37] I. zofiae Paikasigudem village VPL/JU/KM/20, a left upper premolar A mammal described as an eobaatarid multituberculate, but this interpretation has been challenged.

[43] Godavarisaurus[44] G. lateefi A small sphenodontian, with a skull estimated to measure less than 20 mm Paikasisaurus[30][42] P. indicus Paikasigudem village An indeterminate and dubious lepidosauromorph, originally suggested to be a varanoid lizard Rebbanasaurus[44] R. jaini Paikasigudem village A small sphenodont Squamata?

[30][42] Indeterminate Paikasigudem village Distinct from Bharatagama rebbanensis; may include material formerly assigned to the dubious Kota squamate Paikasisaurus indicus.

[49] Indeterminate Kota limestone ridge Dermal scutes, with a femur and some fragments of other bones Indeterminate material referred to crocodylomorphs similar to Teleosaurus Campylognathoides[50] C. indicus Kota limestone ridge The holotype of Campylognathoides indicus, a pair of premaxillae, may represent a fish rather than a pterosaur.

Represents the best-known Early Jurassic sauropod Dandakosaurus[57] D. indicus Yamanpalli bonebed Lower Member A chimaera of large theropod bones, including and ischium and tooth, probably belonging to a carnosaur, and sauropod bones (two Kotasaurus vertebrae) Dromaeosauridae?

[12] Indeterminate Paikasigudem village Isolated Teeth Five distinct morphotypes have been identified, mostly resemble coelurosaurs or dromaeosauroids.

Agathoxylon[60] A. kotaense Near Kota village Fossil wood Affinities with Araucariaceae or Cheirolepidiaceae inside Pinales.

A. santalense[60] Near Kota village Fossil wood Affinities with Araucariaceae or Cheirolepidiaceae inside Pinales.

Recent research has reinterpreted it a stem group of the Polypodiales (closely related to the extant genera Dennstaedtia, Lindsaea, and Odontosoria) C.

Ginkgoxylon[65] G. dixii Near Kota village Fossil wood Affinities with Ginkgoaceae inside Ginkgoopsida.

Pagiophyllum[63][52] P. peregrinum Near Kota village Branched shoots Affinities with Araucariaceae or Cheirolepidiaceae inside Pinales.

Cladophlebis denticulata illustration
Coniopteris specimen
Extant Equisetum arvense specimen
Ginkgoites reconstruction
Hausmannia specimen
Otozamites specimen
Extant Torreya specimen