| Trichinopoly Group | |
| Type: | Geological formation |
| Age: | Turonian-Santonian ~ |
| Period: | Coniacian |
| Prilithology: | Sandstone |
| Region: | Tamil Nadu and Kerala |
| Country: |  India |
| Coordinates: | 11.1°N 78.9°W |
| Paleocoordinates: | -44.8°N 45.8°W |
| Underlies: | Ariyalur Group |
| Overlies: | Ootatoor Group |
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]
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images | |
|---|---|---|---|---|---|---|---|
| Dravidosaurus[3] | D. blanfordi | Ariyalur | 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. |