| Ottakovil formation | |
|---|---|
| Stratigraphic range: Middle Maastrichtian ~ | |
| Type | Geological formation |
| Unit of | Ariyalur Group |
| Underlies | Kallamedu Formation |
| Overlies | Kallakurichi Formation |
| Location | |
| Location | Ottakovil |
  Ottakovil Formation (India)  Ottakovil Formation (Tamil Nadu) | |
The Ottakovil formation (Also spelled Ottakoil) is a geological formation in the state of Tamil Nadu, India.
The formation was a shallow marine environment with fossils of Echinoids, Nautilus, Ammonites, Alectronia as well as calcareous nannoplankton.
Fossils of echinoids, nautiluses, ammonites, the oyster Alectronia, and calcareous nannoplankton have been reported from the formation.
Color key
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Notes
Uncertain or tentative taxa are in small text
crossed out taxa are discredited.
| Ichnofossils from the Ottakovil formation | ||||
|---|---|---|---|---|
| Genus | Species | Material | Notes | Member |
| Thalassinoides | T. sp. | An ichnofossil made by decapod crustaceans, or fish | ||
| Ophiomorpha | O. sp. | |||