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{{short description|Geologic formation in India}}{{Context||details=|date=December 2020}}{{Infobox Rockunit|name=Kallamedu Formation|country={{flag|India}}|thickness=Variable, typically {{convert|5|-|5000|km|abbr=on}}|overlies=[[Archean]] [[Basement (geology)|Basement]]|underlies=[[Niniyur Formation]]|subunits=|unitof=|paleocoordinates=|region=|image=|namedby=|namedfor=[[Kallimedu|Kallamedu]] village|otherlithology=[[Conglomerate (geology)|Conglomerate]]|prilithology=[[Claystone]], [[siltstone]] [[limestone]]|period=Maastrichtian|age=[[Maastrichtian]]<br />~{{fossilrange|70.6|65.5}}|type=[[Geological formation]]|caption=|extent=Kallamedu|| coordinates ={{coord|11.6962|N|79.4127|E|display=inline,title}}}}
The '''Kallamedu Formation''' is a [[Late Cretaceous]] ([[Maastrichtian]]) geologic [[Formation (geology)|formation]] located in [[India]] that forms part of the [[Ariyalur Group]].<ref name="geology">{{cite book|title=Memoirs of the Geological Survey of India|pages=107–140|url=https://books.google.com/books?id=jLIEAAAAQAAJ|year=1865|publisher=Oxford University}}</ref> [[Dinosaur]] remains and [[petrified wood]] samples are among the known fossils recovered from this formation.<ref name="cretaceousdistribution">Weishampel, David B; et al. (2004). "Dinosaur distribution (Late Cretaceous, Asia)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): ''[[The Dinosauria]]'', 2nd, ''Berkeley: University of California Press''. Pp. 593–600. {{ISBN|0-520-24209-2}}.</ref>

== Paleofauna ==
* [[Abelisauridae]] indet. – "disassociated remains."<ref name=Goswami2013>{{Cite journal|doi = 10.1038/ncomms2716|title = A troodontid dinosaur from the latest Cretaceous of India|year = 2013|last1 = Goswami|first1 = A.|last2 = Prasad|first2 = G. V. R.|last3 = Verma|first3 = O.|last4 = Flynn|first4 = J. J.|last5 = Benson|first5 = R. B. J.|journal = Nature Communications|volume = 4|page = 1703|pmid = 23591870|bibcode = 2013NatCo...4.1703G|doi-access = free}}</ref>
*''[[Bruhathkayosaurus matleyi]]'' – "ilium and ischium, femur, tibia, radius and part of a vertebra (specifically a platycoelous caudal centrum). Remains no longer exist."<ref name=Bruhatyh>Yadagiri, P. and Ayyasami, K. (1987). "A carnosaurian dinosaur from the Kallamedu Formation (Maestrichtian horizon), Tamilnadu." In M.V.A. Sastry, V.V. Sastry, C.G.K. Ramanujam, H.M. Kapoor, B.R. Jagannatha Rao, P.P. Satsangi, and U.B. Mathur (eds.), Three Decades of Development in Palaeontology and Stratigraphy in India. Volume 1. Precambrian to Mesozoic. ''Geological Society of India Special Publication'', 11(1): 523–528.</ref>
*[[Carnosauria]] indet.? – "fragmentary remains."<ref name=Bruhatyh />
* [[Crocodilia]] indet. – "teeth."<ref name=Prasad2013 />
*''[[Fusioolithus|Fusioolithus baghensis]]'' – "[[dinosaur egg|eggs]]."<ref name=Dhimpay2019 />
*''[[Kurmademys|Kurmademys kallamedensis]]'' – "nearly complete skull."<ref name="American Museum Novitates">{{Cite journal |author=Gaffney, Eugene S |author2=Chatterjee, Sankar |author3=Rudra, Dhiraj K. |year= 2001 |title= ''Kurmademys'', a new side-necked turtle (Pelomedusoides: Bothremydidae) from the Late Cretaceous of India |journal= American Museum Novitates |volume= 3321 |pages= 1–16|url=http://digitallibrary.amnh.org/dspace/handle/2246/2938 |format=pdf |doi=10.1206/0003-0082(2001)321<0001:kansnt>2.0.co;2|hdl=2246/2938 }}</ref>
*[[Notosuchia]] indet. - "related to ''[[Simosuchus]]''."<ref name=Prasad2013>Prasad, G. V. R., Verma, O., Flynn, J. J. & Goswami, A. (2013) A new Late Cretaceous vertebrate fauna from the [[Cauvery basin]], South India: implications for Gondwanan palaeobiogeography. ''Journal of Vertebrate Paleontology''.</ref>
* [[Sauropoda]] indet. – "fragmentary remains."<ref>[[Richard Lydekker|R. Lydekker]]. 1877. Notices of new and other Vertebrata from Indian Tertiary and Secondary rocks. ''Records of the Geological Survey of India'' 10(1):30–43</ref>
*[[Stegosauria]] indet. – "dermal plate or misinterpreted [[sauropod]] bone."<ref name=NJGPA20172>{{cite journal |author1=Peter M. Galton |author2=Krishnan Ayyasami |year=2017 |title=Purported latest bone of a plated dinosaur (Ornithischia: Stegosauria), a "dermal plate" from the Maastrichtian (Upper Cretaceous) of southern India |journal=Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen |volume=285 |issue=1 |pages=91–96 |doi=10.1127/njgpa/2017/0671 }}</ref>
*[[Titanosauria]] indet. - "solitary egg."<ref name=Dhimpay2019>{{Cite journal|doi = 10.1080/08912963.2018.1450408|title = Parataxonomy and palaeobiogeographic significance of dinosaur eggshell fragments from the Upper Cretaceous strata of the Cauvery Basin, South India|year = 2018|last1 = Dhiman|first1 = Harsha|last2 = Prasad|first2 = Guntupalli V. R.|last3 = Goswami|first3 = Anjali|journal = Historical Biology|pages = 1–13|s2cid = 89969203}}</ref>
*[[Troodontidae]] indet. – "One isolated tooth (DUGF/52)."<ref name=Goswami2013 />

== References ==

{{reflist}}

[[Category:Geologic groups of Asia]]
[[Category:Geologic formations of India]]
[[Category:Upper Cretaceous Series of Asia]]
[[Category:Maastrichtian Stage]]
[[Category:Paleontology in India]]

Kallamedu Formation - Revision history

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