{{Short description|Geological formation in India}} {{Use dmy dates|date=July 2019}} {{Infobox rockunit | name = Trichinopoly Group | image = | caption = | type = Geological formation | age = Turonian-Santonian<br>~{{fossil range|94|84}} | period = Coniacian | prilithology = Sandstone | otherlithology = | namedfor = | namedby = | region = Tamil Nadu and Kerala | country = India | coordinates = {{coord|11.1|N|78.9|E|display=inline,title}} | paleocoordinates = {{coord|44.8|S|45.8|E|display=inline}} | unitof = | subunits =Anaipadi Formation | underlies = Ariyalur Group | overlies = Ootatoor Group | thickness = | extent = | area = | map = {{Location map+ | India | relief = 1 | width = 250 | float = center | places = {{Location map~ | India | lat_deg = 11.1 | lon_deg = 78.9 | mark = Lightgreen pog.svg | marksize = 10 }} }} | map_caption = }} The '''Trichinopoly Group''' is a geological formation in India whose strata date back to the Late Cretaceous. It lies between the Ootatoor and Ariyalur Groups. It is broad in its southern extremity but thins as it gradually proceeds northwards as it ultimately meets 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 are among the fossils that have been recovered from the 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>
== Paleobiota == {{Paleobiota-key-compact}}
=== Dinosaurs === ;Ornithischians {| class="wikitable" align="center" |- ! Genus !! Species !! Location !! Stratigraphic position !! Material !! Notes !! Images |- |''Dravidosaurus''<ref name="table-16-1-344">"Table 16.1," in Weishampel, et al. (2004). Page 344.</ref> |''D. blanfordi'' |Ariyalur |Anaipadi formation |Fragmentary Skull, tooth, sacrum, ilium, ischium, armor plate and dermal spine of an adult. |A (Possible) Stegosaur. | |- |?''Iguanodon''<ref name=":0">{{Cite journal |last=Blanford |first=W.T. |date=1862 |title=On the Cretaceous and other rocks of the South Arcit, and Trichinopoly districts, Madras. |url=https://archive.org/details/memoirsgeologic19indigoog |journal=Memoirs of the Geological Survey of India |language=en |volume=4 |issue=1 |pages=1–217}}</ref> |sp. |Ootatoor | |"Unidentified remains of a Gigantic Saurian presumed to be an Ornithopod" | A fragmentary Ornithopod described as an Iguanodon. | |}
== See also == * List of dinosaur-bearing rock formations
== References == {{Reflist}}
=== Bibliography === * {{cite book |editor-last=Weishampel |editor-first=David B. |editor-last2=Dodson |editor-first2=Peter |editor-last3=Osmólska |editor-first3=Halszka |year=2004 |title=The Dinosauria|edition=2nd |url=https://books.google.com/books?id=vtZFDb_iw40C |location=Berkeley|publisher= University of California Press |pages=1–880 |accessdate=2019-02-21|isbn=0-520-24209-2}}
{{Tiruchirappalli}}
Category:Geologic groups of Asia Category:Geologic formations of India Category:Upper Cretaceous Series of Asia Category:Coniacian Stage Category:Santonian Stage Category:Turonian Stage Category:Sandstone groups Category:Shallow marine deposits Category:Paleontology in India