Kota Formation Explained
The Kota Formation is a geological formation in India. The age of the Kota Formation is uncertain; it is commonly considered to date to the Early Jurassic, but some studies have suggested it may extend into the Middle Jurassic or even later. It conformably overlies the Lower Jurassic Upper Dharmaram Formation and is unconformably overlain by the Lower Cretaceous Gangapur Formation. It is split into a Lower Member and Upper Member. 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.[1]
Stratigraphy
The lower boundary of the Kota Formation is made of pebbly sandstone, covering the topmost clay seen in the Dharmaram Formation.[2] The Kota Formation has been traditionally divided into 2 main members, the Lower and Upper members, yet more recent work have redivided it into 3.[3] The Lower member can be seen at locations such as Adamilli, Kamavarapukota and Sudikonda, being made of sandstones, with clay clasts, with greater or lower stratification.[4] The Middle Member is well developed along the Continental Gondwana basin, specially towards the northwestern part, and is made of medium to fine white sandstone with clay and concretionary limestone, suggesting the development of paleosols associated with alluvial floodplains.[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.[3]
Age
The age of the Kota Formation is controversial. 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.[6] [7] The maximum age of the Kota Formation is constrained by the underlying Upper Dharmaram Formation, which is Early Jurassic, probably Hettangian or Sinemurian, in age.[8] [7] Various researchers have attempted to date the Kota Formation using biostratigraphy. Krishnan (1968), Jain (1973), and Yadagiri and Prasad (1977) favored an Early Jurassic age based on the fish fauna. Govindan (1975) suggested a Middle Jurassic age based on ostracods. In 2006, Bandyopadhyay and Sengupta argued that the fish fauna suggested a Toarcian age for the Upper Kota Formation, possibly extending into the Aalenian, and in turn estimated the Lower Kota to be Sinemurian to Pliensbachian in age.[9] Guntupalli V. R. Prasad, along with various coauthors, has argued for a younger age. In 2001, Vijaya and Prasad proposed based on palynological evidence that the Kota Formation was deposited between the Callovian age of the Middle Jurassic and the Barremian age of the Early Cretaceous.[10] In 2002, Prasad and Manhas argued that the mammal genus Dyskritodon, known only from the Kota Formation and the Early Cretaceous of Morocco, provides evidence for a young age for the Kota Formation. In 2020, Prasad and Parmar argued that the similarity of the dinosaur fauna of the Kota Formation to that of the Middle Jurassic of the United Kingdom supported a Middle Jurassic age for the Kota Formation.
Paleoenvironment
The Kota Formation represents mostly a Continental succession related to a continental rift basin, the Pranhita-Godavari Gondwana Basin of peninsular India. 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. There have been records of freshwater lue green algal stromatolites and oncolites, suggested to be deposited on low energy and low bathymetry lacustrine settings.[11] 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.[1] Associated with the lacustrine facies have recovered microbial bioherms and lacustrine spring mounds, shallow ephemeral ponds with carbonated mud and Phyllopods, pedogenic calcrete under arid seasons and short-lived distributary channels. The depositional setting may have been partially sheltered from the input of siliciclastic materials, except on flooding seasons. Microbial biomats likely developed on shallow waters, while rhizoliths increased it´s presence of abandoned channel fills and pedogenic facies indicate drought seasons.
Fossil content
Ostracoda
OstracodsGenus | Species | Location | Stratigraphic position | Material | Notes | Images |
---|
Clinocypris | Clinocypris sp. |
|
| Six carapaces | A freshwater ostracodan of the Family Pontocyprididae. | |
Cypredea | Cypredea sp. |
|
| Fourteen incomplete carapaces | A freshwater ostracodan of the Family Palaeocytheridae. | |
Darwinula[12] [13] | Darwinula cf.sarytirmenensis | - Aklapalli
- Daroghapalli
- Kanchelli
- Metpalli
- Potepalli
| - Lower Member
- Upper Member
| More than 200 carapaces and valves | A freshwater ostracodan of the Family Darwinulidae. The most dominant genus locally and the main indicator of both fluvial and lacustrine settings | |
Darwinula kingi | - Aklapalli
- Daroghapalli
- Kanchelli
- Metpalli
- Potepalli
| - Lower Member
- Upper Member
| Around 120 carapaces and valves | A freshwater ostracodan of the Family Darwinulidae. | |
Darwinula spp. |
| - Lower Member
- Upper Member
| Nineteen Carapaces | A freshwater ostracodan of the Family Darwinulidae. | |
Eucandona | Eucandona sp. |
|
| Eight incomplete carapaces | A freshwater ostracodan of the Family Candoninae. | |
Limnocythere | Limnocythere spp. |
|
| Three complete carapaces | A freshwater ostracodan of the family Limnocytheridae. | |
Stenocypris | ?Stenocypris sp. |
|
| Single incomplete carapace | A freshwater ostracodan of the family Cyprididae. | |
Timiriasevia | Timiriasevia digitalis |
|
| Twenty complete carapaces and thirty-six partly broken carapaces. | A freshwater ostracodan of the family Limnocytheridae. | |
|
Phyllopoda
PhyllopodsGenus | Species | Location | Stratigraphic position | Material | Notes | Images |
---|
Estheriina[14] | Estheriina alibadadensis | - Boraigudem limestone ridge
- Kota limestone ridge
- Lingal-Metpalli ridge
| - Lower Member
- Upper Member
| Valves | A freshwater clam shrimp of the family Estheriininae. The most abundant Estheriid in the region and the key element of the Estheriina biozone | |
Estheriina indijurassica | - Boraigudem limestone ridge
- Kota limestone ridge
- Lingal-Metpalli ridge
| - Lower Member
- Upper Member
| Valves | A freshwater clam shrimp of the family Estheriininae. | |
Estheriina bullata | - Boraigudem limestone ridge
- Kota limestone ridge
- Lingal-Metpalli ridge
| - Lower Member
- Upper Member
| Valves | A freshwater clam shrimp of the family Estheriininae. | |
Estheriina pranhitaensis | - Boraigudem limestone ridge
- Kota limestone ridge
- Lingal-Metpalli ridge
| - Lower Member
- Upper Member
| Valves | A freshwater clam shrimp of the family Estheriininae. | |
Lioestheria[15] | Lioestheria kotaensis | - Boraigudem limestone ridge
- Kota limestone ridge
- Lingal-Metpalli ridge
| - Lower Member
- Upper Member
| Valves | A freshwater clam shrimp of the family Lioestheriidae. The second key element of the Estheriina biozone | |
Lioestheria crustabundis | - Boraigudem limestone ridge
- Kota limestone ridge
- Lingal-Metpalli ridge
| - Lower Member
- Upper Member
| Valves | A freshwater clam shrimp of the family Lioestheriidae. |
Lioestheria ssp. |
|
| Valves | A freshwater clam shrimp of the family Lioestheriidae. |
Paleolimnadia | Paleolimnadia spp. |
| - Lower Member
- Upper Member
| Valves | A freshwater clam shrimp of the family Estheriininae. | |
Pseudeasmussiata | Pseudeasmussiata andhrapradeshia | - Boraigudem limestone ridge
- Kota limestone ridge
- Lingal-Metpalli ridge
| - Lower Member
- Upper Member
| Valves | A freshwater clam shrimp of the family Lioestheriidae. | |
|
Insecta
InsectsGenus | Species | Location | Stratigraphic position | Material | Notes | Images |
---|
Archimesoblatta[16] | A. shiva | Tasch outcrop K-2 bed 8 |
| Right forewing tegmen | A mesoblattinid cockroach |
Coleopteron[17] | C. sp. | Kota limestone ridge |
| Isolated wings | An Indeterminate Coleopteran. |
Kotaphialtites[18] | K. frankmortoni | Sirpur Taluka, Tasch's K1 outcrop bed 2(A) |
| MCZ 11909, Isolated wing | An ephialtitid hymenopteran. |
Protogryllus[19] | P. lakshmi | Kota Formation outcrop K-2 |
| MCZ 3046, Isolated wing | |
Taschigatra[20] | T. bharataja | Sirpur Taluka, Tasch's K1 outcrop bed 3(A) |
| No.2013(3013), part and counterpart of well preserved wing | A rhagionid dipteran. |
T. tulyabhijana | Sirpur Taluka, Tasch's K1 outcrop bed 2(A) |
| No. 5034, well preserved wing | A rhagionid dipteran. |
Xyelula | X. alexandri | Kota Formation outcrop K-2 |
| MCZ 11831, well preserved wing | A sepulcid hymenopteran. |
|
Fish
FishTaxon | Species | Location | Stratigraphic position | Material | Notes | Images |
---|
Indocoelacanthus[21] | Indocoelacanthus robustus | - Boraigudem limestone ridge
- Kota limestone ridge
- Lingal-Metpalli ridge
| - Lower Member
- Upper Member
| - ISI P. 39. Impression of the caudal fin
- ISI P. 40. Nearly complete head and trunk squamation
- ISI P. 41-45. Fragments of fin-rays
- ISI P. 46. Neural arches, isolated scales and girdle elements
| A robust freshwater coelacanth of the family Latimeriidae. Represents the largest member of the local freshwater fauna, measuring up to 70 cm. | |
Lepidotes[22] [23] | Lepidotes deccanensis | - Kota limestone ridge
- Paikasigudem village
| - Lower Member
- Upper Member
| - Complete Specimen
- Isolated Remains
| A freshwater neopterygian of the family Lepisosteiformes. | |
Lepidotes spp. | - Kota limestone ridge
- Paikasigudem village
| - Lower Member
- Upper Member
| Isolated remains | A freshwater neopterygian of the family Lepisosteiformes. |
Lonchidion[24] [25] | Lonchidion indicus | - Paikasigudem village
- Yamanpalli bonebed
|
| - GSI.TI.2, tooth
- Isolated Teeth
| A freshwater elasmobranch of the family Lonchidiidae. | |
Paradapedium[26] | Paradapedium egertoni | - Boraigudem limestone ridge
- Kota limestone ridge
- Near Ankisha
| - Lower Member
- Upper Member
| - BMNHP12146, Partial specimen
- BMNHP12147, Almost complete specimen
- BMNHP12148, Partial specimen
- ISIP.32 Nearly complete specimen
- ISIP.33 Nearly complete specimen
- ISIP.34 Nearly complete specimen
- ISIP.35 specimen lacking tail and head
| A freshwater neopterygian of the family Dapediidae. | |
Pholidophorus[27] | Pholidophorus kingi | - Boraigudem limestone ridge
- Kota limestone ridge
- Paikasigudem village
| - Lower Member
- Upper Member
| - Several complete and incomplete specimens
| A freshwater neopterygian of the family Pholidophoridae. | |
Pholidophorus indicus | - Boraigudem limestone ridge
- Kota limestone ridge
- Paikasigudem village
| - Lower Member
- Upper Member
| - Several complete and incomplete specimens
| A freshwater neopterygian of the family Pholidophoridae. | |
Polyacrodus[28] | Polyacrodus? sp. |
|
|
| A freshwater elasmobranch of the family Polyacrodontidae. | |
Pycnodontidae | Indeterminate |
|
| - About 60 specimens of Pharyngeal Teeth, including GSITL3-6
| A freshwater neopterygian of the family Pycnodontidae, originally classified as Perciformes, yet suggested to be very similar to the Cretaceous pycnodont Stephanodus. | |
Semionotiformes | Indeterminate |
|
|
| A freshwater neopterygian of the family Semionotiformes. | |
Tetragonolepis | Tetragonolepis oldhami | - Kota limestone ridge
- Lingal-Metpalli ridge
| - Lower Member
- Upper Member
| - GSI2145, an impression including most of the body
- ISP36, fragment of trunk and skull
- ISP37, nearly complete specimen
| A freshwater neopterygian of the family Dapediidae. | |
|
Amphibia
AmphibiansTaxon | Species | Location | Stratigraphic position | Material | Notes | Images |
---|
| Indeterminate |
|
| - GSI.TL.19, Mandible
- GSI.TL.20, right illium
| Indeterminate frog remains, originally referred to Pelobatidae due to be compared with younger Creteaceous Indian frog material | |
| Indeterminate |
|
| - GSI.TI.10, mandible with one teeth
- GSI.TI.16, fragment of mandible
- GSI.TI.17, madible with 4 teeth
| Indeterminate caudatan remains, originally referred to Sirenidae due to be compared with younger Creteaceous sirenid material | |
|
Mammaliaforms
MammaliaformsTaxon | Species | Location | Stratigraphic position | Material | Notes | Images |
---|
Australosphenida[29] | Indeterminate | Paikasigudem village |
| Isolated lower molar | A mammal of the group Australosphenida, resembling the south american genus Asfaltomylos | |
Dyskritodon?[30] | Dyskritodon? 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 | Gondtherium dattai | Paikasigudem village |
| VPL/JU/KM 12 right lower molar | A mammal of the family Docodontidae | |
Indotherium[31] | Indotherium pranhitai | 5 km west of Yamanapalli |
| GSI20795, right upper molar | A mammaliform of the family Morganucodontidae. Includes the informally named "Indozostrodon simpsoni".[32] | |
Indobaatar[33] | Indobaatar zofiae | Paikasigudem village |
| VPL/JU/KM/20, a left upper premolar | A mammal described as an eobaatarid multituberculate, but this interpretation has been challenged.[34] | |
Kotatherium[35] | Kotatherium haldanei | 5 km west of Yamanapalli |
| GSI19634, right upper molar | A mammaliform of the family Kuehneotheriidae | |
Nakunodon[36] | Nakunodon paikasiensis | Paikasigudem village |
| GSI.SR/PAL/12, right upper molar | A mammal of the family Amphidontidae | |
Paikasigudodon[37] | Paikasigudodon yadagirii | Paikasigudem village |
| VPL/JU/KM/10, right upper molar | A mammaliaform of the family Morganucodontidae, originally known as "Kotatherium yadagirii" | |
Trishulotherium | Trishulotherium kotaensis | Paikasigudem village |
| GSISR/PAL/10, left lower molar | A mammal of the order Symmetrodonta | |
|
Lepidosauromorpha
LepidosauromorphsTaxon | Species | Location | Stratigraphic position | Material | Notes | Images |
---|
Bharatagama[38] | Bharatagama rebbanensis | Paikasigudem village |
| - VPL/JU/KR 66, dentary
- VPL/JU/KR 88, anterior region of a left maxilla
- VPL/JU/KR 91, left maxilla
- VPL/JU/KR 90-92, posterior ends of right maxillae
- VPL/JU/KR 67-80-103, anterior symphysial region
- JU/KR 79, 98, 100, dentaries mid-region
- VPL/JU/KR 69, 81-84, 87, dentary with hatchling dentition
- VPL/JU/KR 68, 85-86, dentary
- VPL/JU/KR 70, 71, 76,78, 93, 94, 97, 104, 105, dentary
| A lepidosauromorph originally described as an Iguanian lizard. May actually be a sphenodontian rather than a lizard.[39] | |
Godavarisaurus[40] | Godavarisaurus lateefi | - Gorlapalli village
- Paikasigudem village
|
| - VP4Ju/KR47, a partial right dentary
- VP4Ju/KR44, 51, 52, right maxilla
- VP4Ju/KR40, 41, 43, 49, 50, left maxilla
- VP4Ju/KR37, 48, 65, right dentary
- VP4Ju/KR39, fragment of left dentary
- VP4Ju/KR46, left palatine
| A small sphenodontian, with a skull estimated to measure less than 20 mm | |
Paikasisaurus | Paikasisaurus indicus | Paikasigudem village |
| - GSI.TI.14, left dentary with teeth
- GSI.TI.15, left dentary with one tooth
| An indeterminate and dubious lepidosauromorph, originally suggested to be a varanoid lizard | |
Rebbanasaurus | Rebbanasaurus jaini | Paikasigudem village |
| - About 50 specimens, including premaxillae, maxillae, dentaries, and a palatine
| A small sphenodont | |
Squamata? | Indeterminate | Paikasigudem village |
| - VPL/JU/KR 62, fragmentary right maxilla
- VPL/JU/KR 61, partial maxilla
| Distinct from Bharatagama rebbanensis; may include material formerly assigned to the dubious Kota squamate Paikasisaurus indicus. | |
Sphenodontidae | Indeterminate | Paikasigudem village |
|
| Indeterminate Sphenodontidae remains | |
|
Testudinata
TurtlesTaxon | Species | Location | Stratigraphic position | Material | Notes | Images |
---|
Indochelys[41] [42] | Indochelys spatulata | - 3 km NNE of Kistapur village, Kota
- Near Kota village, north of Sironcha
|
| - GSI 20380, a partial shell
- ISI R176, a partial shell
- ISI R177, the anterior half of a shell
| Mesochelydian stem-turtle, suggested to be related with Condorchelys | |
Testudines[43] | Indeterminate | 1 km south of Bodepalli |
| Carapace fragments | Indeterminate turtle remains | |
|
Crocodylomorpha
Atoposaurid crocodiles are known from the unit, yet is not clear from what locality.[7]
CrocodylomorphaTaxon | Species | Location | Stratigraphic position | Material | Notes | Images |
---|
Crocodylomorpha[44] | Indeterminate | 1 km south of Bodepalli | Lower Member | Maxillae, dentaries, teeth | Indeterminate crocodylomorph remains, previously mixed with thyreophoran material and part of the chimaeric "Andhrasaurus" | |
Teleosauridae?[45] | Indeterminate | Kota limestone ridge |
| Dermal scutes, with a femur and some fragments of other bones | Indeterminate material referred to crocodylomorphs similar to Teleosaurus | |
|
Pterosauria
PterosaursTaxon | Species | Location | Stratigraphic position | Material | Notes | Images |
---|
Campylognathoides[46] | Campylognathoides indicus | Kota limestone ridge |
| - ISI R38, holotype, fragment of skull and upper jaw
| The holotype of Campylognathoides indicus, a pair of premaxillae, may represent a fish rather than a pterosaur.[47] | |
Pterosauria[48] | Indeterminate |
|
| - GSI17868, radius and ulna, wing metacarpal, first wing-phalanx and a clawed toe
- ISIR49. fragment displaying dissociated bones from post-cranial region
| Indeterminate pterosaur remains | |
|
Dinosaurs
DinosaursGenus | Species | Location | Stratigraphic position | Material | Notes | Images |
---|
"Andhrasaurus"[49] | "Andhrasaurus indicus" | 1 km south of Bodepalli | Lower Member | Sacral vertebra, vertebral centra, dorsal vertebrae, caudal vertebrae, parts of scapula and ilium, osteoderms | A chimaera of thyreophoran postcranial material and Crocodylomorph skull pieces. The armor was later suggested to be Ankylosauria indet. And other latter works pointed out it likely belongs to an indeterminate basal thyreophoran.[50] | |
Barapasaurus[51] | Barapasaurus tagorei | - North of Krishnapur
- Pochampalli village
|
| - Roughly 300 bones, representing the disarticulated remains of at least six individuals
| A sauropod dinosaur, either a Eusauropoda or more likely a Gravisauria. Represents the best-known Early Jurassic sauropod | |
Dandakosaurus[52] | Dandakosaurus indicus | Yamanpalli bonebed | Lower Member | - Lateral tooth, proximal ischium
- Dorsal vertebra, proximal caudal vertebra (Likely of Kotasaurus)
| A chimaera of large theropod bones, including and ischium and tooth, probably belonging to a carnosaur, and sauropod bones (two Kotasaurus vertebrae) | |
Dromaeosauridae? | Indeterminate | Paikasigudem village |
| Isolated Teeth | Five distinct morphotypes have been identified, mostly resemble coelurosaurs or dromaeosauroids. | |
Hypsilophodontidae[53] | Indeterminate | Gorlapalli Village |
|
| Identified originally as a member of Hypsilophodontidae, probably represents a tooth of a basal neornithischian. | |
Kotasaurus[54] | Kotasaurus yamanpalliensis | Yamanpalli bonebed |
| Disarticulated remains of at least 12 individuals | A basal sauropod | |
Ornithischia[55] | Indeterminate | - 1 km south of Bodepalli
- Paikasigudem village
| - Lower Member
- Upper Member
| - End of left humerus
- Isolated Teeth
| Indeterminate ornithischian material. Among the teeth, at least five distinct morphotypes have been identified. |
Richardoestesia? | Richardoestesia? spp. | Paikasigudem village |
| Isolated Teeth | Teeth similar to those of the problematic taxon Richardoestesia, of supposed coelurosaur affinities | |
Thyreophora[56] | Indeterminate | Paikasigudem village |
| Scute and associated fragmentary limb bones. | Indeterminate scelidosaurid material. | |
Sauropoda | Indeterminate. | Yamanpalli bonebed. | • Lower Member | Teeth. | Found in the same bonebed as Kotasaurus, resembles Amygdalodon. | |
Carnosauria | Indeterminate. | Yamanapalli bonebed. | • Lower Member | Teeth. | Found in the same bonebed as Kotasaurus, referred to as'carnosaurs' | | |
Megaflora
See also
Notes and References
- Goswami. Suparna. Gierlowski-Kordesch. Elizabeth. Ghosh. Parthasarathi. January 2018. Sedimentology of the Early Jurassic limestone beds of the Kota Formation: record of carbonate wetlands in a continental rift basin of India. Journal of Paleolimnology. en. 59. 1. 21–38. 10.1007/s10933-016-9918-y. 2018JPall..59...21G . 133167210. 0921-2728.
- Kutty . T. S. . Jain . S. L. . Chowdhury . T. R. . Gondwana sequence of the northern Pranhita-Godavari Valley: its stratigraphy and vertebrate faunas . Palaeobotanist . 1987 . 36 . 263–282 . 16 June 2023.
- Lakshminarayana . G. . Stratigraphy and structural framework of the Gondwana sediments in the Pranhita-Godavari Valley, Andhra Pradesh . Gondwana Nine . 1994 . 1 . 2 . 311–330.
- Lakshminarayana . G. . Evolution in basin fill style during the Mesozoic Gondwana continental break-up in the Godavari Triple junction, SE India . Gondwana Research . 2002 . 5 . 1 . 227–244 . 10.1016/S1342-937X(05)70906-0 . 2002GondR...5..227L . 16 June 2023.
- Sengupta . S. . Gondwana sedimentation in the Pranhita–Godavari Valley: a review . Journal of Asian Earth Sciences . 2003 . 21 . 6 . 633–642 . 10.1016/S1367-9120(02)00052-4 . 2003JAESc..21..633S . 16 June 2023.
- 10.7306/vj.17.1. 17. 1–16. Chinnappa. Chopparapu. Rajanikanth. Annamraju. Pauline Sabina. Kavali. Palaeofloras from the Kota Formation, India: palaeodiversity and ecological implications. Volumina Jurassica. 2019. 31 January 2024.
- Book: Chatterjee, Sankar. Springer International Publishing. 978-3-030-49752-1 . 181–226. Guntupalli V.R. . Prasad . Rajeev . Patnaik . Biological Consequences of Plate Tectonics. The Age of Dinosaurs in the Land of Gonds. Vertebrate Paleobiology and Paleoanthropology . Cham. 2020. 10.1007/978-3-030-49753-8_8 . 229651571 . http://link.springer.com/10.1007/978-3-030-49753-8_8.
- Kutty . T.S. . Chatterjee . Sankar . Galton . Peter M. . Upchurch . Paul . 2007 . Basal sauropodomorphs (Dinosauria: Saurischia) from the Lower Jurassic of India: their anatomy and relationships . Journal of Paleontology . 81 . 6 . 1552–1574 . 10.1666/04-074.1 . 2007JPal...81.1218K . 130508134 .
- 37. 77–85. Bandyopadhyay. Saswati. Sengupta. Dhurjati Prasad. Vertebrate faunal turnover during the Triassic-Jurassic transition: an Indian scenario. New Mexico Museum of Natural History and Science Bulletin. 2006.
- 46. 77–93. Vijaya. Prasad. G. V. R.. Age of the Kota Formation, Pranhita-Godavari Valley, India: a palynological approach. Journal of the Palaeontological Society of India. 2001.
- Rudra . D. K. . Maulik . P. K. . Stromatolites from Jurassic freshwater limestone, India . Mesozoic Research . 1987 . 1 . 3 . 135–146.
- Govindan . A. . Jurassic fresh water ostracods from the Kota limestones of India . Palaeontology . 1975 . 18 . 4 . 207–216 . 15 June 2023.
- Misra . R.S. . Satsangi . P.P. . Ostracods from Kota Formation . Proceedings of the Colloquium on Micropalaeontology and Stratigraphy. Geological Survey of India, Miscellaneous Publication . 1979 . 45 . 5 . 73–80.
- Book: Tasch . P. . Fossil Conchostraca of the Southern Hemisphere and continental drift: Paleontology, biostratigraphy, and dispersal . 1987 . Geological Society of America . 165.
- Ghosh . S. C. . Datta . A. . Nandi . A. . Mukhopadhyay . S. . Estheriid zonation in the Gondwana . Paleobotanist . 1987 . 99–123 . 16 June 2023.
- Engel . M. S. . Pérez-de La Fuente . R. . A new species of roach from the Jurassic of India (Blattaria: Mesoblattinidae) . Journal of the Kansas Entomological Society . 2012 . 85 . 1 . 1–4 . 10.2317/JKES110524.1 . 86567655 . 15 June 2023.
- Book: Handlirsch . A. . Die Fossilen Insekten und die Phylogenie der Rezenten Formen: Ein Handbuch für Paläontologen und Zoologen . 1906 . 31 . 3 . 1–640 . 15 June 2023.
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