Trichinopoly Group

Trichinopoly Group
Stratigraphic range: Turonian-Santonian ~94–84  Ma PreꞒ Ꞓ O S D C P T J K Pg N
Type	Geological formation
Sub-units	Anaipadi Formation
Underlies	Ariyalur Group
Overlies	Ootatoor Group
Lithology
Primary	Sandstone
Location
Coordinates	11°06′N78°54′E / 11.1°N 78.9°E / 11.1; 78.9
Approximate paleocoordinates	44°48′S45°48′E / 44.8°S 45.8°E / -44.8; 45.8
Region	Tamil Nadu and Kerala
Country	India
Trichinopoly Group (India)

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. ^[1] Dinosaur remains are among the fossils that have been recovered from the formation. ^[2]

Paleobiota

Color key Taxon Reclassified taxon Taxon falsely reported as present Dubious taxon or junior synonym Ichnotaxon Ootaxon Morphotaxon		Notes Uncertain or tentative taxa are in small text; crossed out taxa are discredited.

Dinosaurs

Ornithischians

Genus	Species	Location	Stratigraphic position	Material	Notes	Images
Dravidosaurus [3]	D. blanfordi	Ariyalur	Anaipadi formation	Fragmentary Skull, tooth, sacrum, ilium, ischium, armor plate and dermal spine of an adult.	A (Possible) Stegosaur.
? Iguanodon [4]	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

1. Memoirs of the Geological Survey of India. Oxford University. 1865. pp. 107–140.
2. 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.
3. "Table 16.1," in Weishampel, et al. (2004). Page 344.
4. Blanford, W.T. (1862). "On the Cretaceous and other rocks of the South Arcit, and Trichinopoly districts, Madras". Memoirs of the Geological Survey of India. 4 (1): 1–217.

Bibliography

• Weishampel, David B.; Dodson, Peter; Osmólska, Halszka, eds. (2004). The Dinosauria (2nd ed.). Berkeley: University of California Press. pp. 1–880. ISBN   0-520-24209-2 . Retrieved 21 February 2019.