CleanupBot: Robot: Replacing encoded entity with character

2026-03-22T05:10:38Z

Robot: Replacing encoded entity with character

Show changes

Pankajglobal at 04:05, 3 March 2026

2026-03-03T04:05:57Z

Show changes

imported>SporkBot: Repair duplicate template arguments

2021-07-28T21:23:09Z

Repair duplicate template arguments

New page

{{short description|Geologic formation in India}}
{{Infobox Rockunit
| name = Lameta Formation
| image =Lameta Formation.tif
| caption =Exposure of the Lameta Formation at its type locality of Lameta
| type = [[Geological formation]]
| age = [[Maastrichtian]]<br />~{{fossilrange|70|66}}
| period = Maastrichtian
| prilithology = [[Claystone]], [[sandstone]] [[limestone]]
| otherlithology = [[Conglomerate (geology)|Conglomerate]]
| namedby =
| region = [[Western India]]
| country = {{flag|India}}
| coordinates = {{coord|23.2|N|80.0|E|display=inline,title}}
| paleocoordinates = {{coord|24.7|S|63.2|E|display=inline}}
| unitof =
| subunits =
| underlies = [[Deccan Traps]] deposits
| overlies = [[Jabalpur Group]] or [[Precambrian]] [[Basement (geology)|Basement]]
| thickness = Variable, typically {{convert|18|-|45|m|abbr=on}}
| extent = [[Madhya Pradesh]], [[Gujarat]], [[Maharashtra]]
| area = {{convert|5000|km2|sqmi|abbr=on}}
| map = {{Location map+ | India
| relief = 1
| width = 250
| float = center
| places =
{{Location map~ | India
| lat_deg = 23.2
| lon_deg = 80.0
| mark = Lightgreen pog.svg
| marksize = 10
}}
}}
| map_caption =
| namedfor = Lameta Ghat
}}
The '''Lameta Formation''', also known as the '''Infratrappean Beds''', is a [[sedimentary]] [[geological formation]] found in [[Madhya Pradesh]], [[Gujarat]], and [[Maharashtra]], [[India]], associated with the [[Deccan Traps]]. It is of [[Maastrichtian]] age ([[Late Cretaceous]]), and is notable for its [[dinosaur]] [[fossil]]s. Many [[nomen dubium|dubious]] names have been created for isolated bones, but several [[genus|genera]] of dinosaurs from these rocks are well-supported, including the [[titanosaur]] [[sauropod]] ''[[Isisaurus]]'' and the [[abelisaur]]s ''[[Indosaurus]]'', ''[[Indosuchus]]'', ''[[Laevisuchus]]'', and ''[[Rajasaurus]]''.<ref name=DBWetal04>Weishampel et al., 2004, pp.517-606</ref> As well as mammals, snakes and other fossils.

== Lithology ==
The formation is underlain by the Lower Cretaceous sedimentary "Upper Gondwana Sequence" also known as the [[Jabalpur Formation]], and is overlain by the [[Deccan Traps]] [[basalt]]. The Lameta Formation is only exposed at the surface as small isolated outcrops associated with the Satpura Fault. The lithology of the formation, depending on the outcrop, consists of alternating [[clay]], [[siltstone]] and [[sandstone]] [[facies]], deposited in [[Fluvial processes|fluvial]] and [[Lacustrine deposits|lacustrine]] conditions. The environment at the time of deposition has alternatively been considered [[semi-arid]], or tropical humid.<ref>{{Cite journal|last=Srivastava|first=Ashok K.|last2=Mankar|first2=Rupesh S.|date=January 2015|title=Lithofacies architecture and depositional environment of Late Cretaceous Lameta Formation, central India|url=http://link.springer.com/10.1007/s12517-013-1192-y|journal=Arabian Journal of Geosciences|language=en|volume=8|issue=1|pages=207–226|doi=10.1007/s12517-013-1192-y|issn=1866-7511}}</ref><ref>{{Cite journal|last=Kumari|first=Anjali|last2=Singh|first2=Seema|last3=Khosla|first3=Ashu|date=January 2021|title=Palaeosols and palaeoclimate reconstruction of the Maastrichtian Lameta Formation, Central India|url=https://linkinghub.elsevier.com/retrieve/pii/S0195667120303189|journal=Cretaceous Research|language=en|volume=117|pages=104632|doi=10.1016/j.cretres.2020.104632}}</ref>

== Dinosaurs ==
{| class="wikitable" align="center"
|-
! Genus !! Species !! Location !! Stratigraphic position !! Material !! Notes !! Images
|-
| ''[[Indosaurus]]''
| ''I. matleyi''
|
|
| Partial skeleton, including a partial skull.<ref name="table-3-1-49" />
|
|
|-
| ''[[Brachypodosaurus]]''
| ''B. gravis''
|
|
| "Humerus."<ref name="table-17-1-367">"Table 17.1," in Weishampel, et al. (2004). Page 367.</ref>
|
|
|-
| ''[[Coeluroides]]''
| ''C. largus''
|
|
| "Isolated vertebrae."<ref name="table-3-1-50">"Table 3.1," in Weishampel, et al. (2004). Page 50.</ref>
|
|
|-
| ''[[Dryptosauroides]]''
| ''D. grandis''
|
|
| "Vertebrae."<ref name="table-3-1-50"/>
|
|
|-
| ''[[Indosuchus]]''
| ''I. raptorius''
|
|
| Cranial remains, including two braincases, as well as a nearly complete skeleton.<ref name="table-3-1-49" />
|
| [[File:Indosuchus.jpg|center|200px]]
|-
| ''[[Isisaurus]]''
| ''I. colberti''
|
|
|
|
| [[File:Isisaurus DB.jpg|center|200px]]
|-
| ''[[Jainosaurus]]''
| ''J. septentrionalis''
|
|
| "Basicranium and partial postcranial skeleton."<ref name="table-13-1-269">"Table 13.1," in Weishampel, et al. (2004). Page 269.</ref>
|
|
|-
| ''[[Jubbulpuria]]''
| ''J. tenuis''
|
|
| "Vertebrae."<ref name="table-3-1-50"/>
|
|
|-
| ''[[Lametasaurus]]''
| ''L. indicus''
|
|
| "Sacrum, ilia, tibia."<ref name="table-3-1-50"/> "Sacrum, ilia, tibia, spines, armor."<ref name="table-17-1-368">"Table 17.1," in Weishampel, et al. (2004). Page 368.</ref>
|
|
|-
| ''[[Laevisuchus]]''
| ''L. indicus''
|
|
| Only vertebrae.<ref name="table-3-1-49">"Table 3.1," in Weishampel, et al. (2004). Page 49.</ref>
|
|
|-
| rowspan="2" | ''[[Ornithomimoides]]''
| ''O. barasimlensis''
|
|
| "Vertebrae."<ref name="table-3-1-50"/>
|
| rowspan=2 |
|-
| ''O. mobilis''
|
|
| "Vertebrae"<ref name="table-3-1-50"/>
|
|-
| ''[[Orthogoniosaurus]]''
| ''O. matleyi''
|
|
| "Tooth"<ref name="table-3-1-50"/>
|
|
|-
| ''[[Rahiolisaurus]]''
| ''R. gujaratensis''
|
|
|
|
| [[File:Rahiolisaurus restoration.png|center|200px]]
|-
| ''[[Rajasaurus]]''
| ''R. narmadensis''
|
|
|
|
| [[File:Rajasaurus restoration.jpg|center|200px]]
|-
| rowspan="2" | ''[[Titanosaurus]]''
| ''T. blanfordi''
|
|
| "Caudal vertebrae."<ref name="table-13-1-270">"Table 13.1," in Weishampel, et al. (2004). Page 270.</ref>
|
| rowspan=2 |
|-
| ''T. indicus''
|
|
| "Teeth"<ref name="table-13-1-271">"Table 13.1," in Weishampel, et al. (2004). Page 271.</ref>
|
|-
|}

== Snakes ==
{| class="wikitable" align="center"
|-
! Genus !! Species !! Location !! Stratigraphic position !! Material !! Notes !! Images
|-
| ''[[Sanajeh]]''
| ''S. indicus''
|
|
| A [[skull]], precloaca [[vertebrae]] and [[ribs]].
| A [[Madtsoiidae|madtsoiid]] snake
| [[File:Sanajeh attacking sauropod.png|thumb|center|200px|''[[Sanajeh]] about to attack a [[titanosaur]] hatchling'']]
|-
|}

== Turtles ==
{| class="wikitable" align="center"
|-
! Genus !! Species !! Location !! Stratigraphic position !! Material !! Notes !! Images
|-
| ''[[Jainemys]]''
| ''J. pisdurensis''
|
|
|
| A [[Bothremydidae|bothremydid]] soft shelled turtle
|
|-
|}

== See also ==
* [[List of dinosaur-bearing rock formations]]
* [[Geology of India]]
* [[Deccan Traps]]
* [[Maevarano Formation]], contemporaneous fossiliferous formation of Madagascar
*[[Intertrappean Beds]]

== References ==
{{reflist|30em}}

=== Bibliography ===
* {{cite LSA |last=[[David B. Weishampel|Weishampel]] |first=David B. |last2=[[Peter Dodson|Dodson]] |first2=Peter |last3=[[Halszka Osmólska|Osmólska]] (eds.) |first3=Halszka |year=2004 |title=The Dinosauria, 2nd edition |url=https://books.google.com/books?id=vtZFDb_iw40C |publisher=Berkeley: University of California Press |pages=1–880 |accessdate=2019-02-21}} {{ISBN|0-520-24209-2}}

[[Category:Geologic formations of India]]
[[Category:Upper Cretaceous Series of Asia]]
[[Category:Cretaceous India]]
[[Category:Maastrichtian Stage]]
[[Category:Shale formations]]
[[Category:Sandstone formations]]
[[Category:Limestone formations]]
[[Category:Deltaic deposits]]
[[Category:Fluvial deposits]]
[[Category:Lagoonal deposits]]
[[Category:Shallow marine deposits]]
[[Category:Tidal deposits]]
[[Category:Ooliferous formations]]
[[Category:Paleontology in India]]
[[Category:Geology of Maharashtra]]
[[Category:Geography of Gujarat|Formations]]
[[Category:Geography of Madhya Pradesh|Formations]]

Lameta Formation - Revision history

CleanupBot: Robot: Replacing encoded entity with character

Pankajglobal at 04:05, 3 March 2026

imported>SporkBot: Repair duplicate template arguments