The Lower Dharmaram Formation is a sedimentary rock formation found in Telangana, India. It is one of the formations of the Pranhita–Godavari Basin. It is of latest Norian and Rhaetian ages (Upper Triassic), and is notable for its fossils of early dinosaurs.
Vertebrate fauna[edit | edit source]
cf. Paratypothorax, cf. Nicrosaurus, fragmentary remains of sauropodomorphs (ISI R279, 280, 281) and neotheropods (ISI R283) have also been recovered from it.[1]
Template:Paleobiota-key-compact
Saurischians[edit | edit source]
| Saurischians reported from the Lower Dharmaram Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Jaklapallisaurus | J. assymetrica[1] | Telangana | "ISI R279, distal end of right femur."[1] | A unaysaurid, also found in the Upper Maleri Formation. | ||
| Sauropodomorpha | Indeterminate | Telangana | "ISIR 280, astragalus." | An Indeterminate Sauropodomorpha. | ||
| Neotheropoda | Indeterminate | Telangana | "ISIR 283, incomplete femur." | An Indeterminate Neotheropod. | ||
Pseudosuchians[edit | edit source]
| Pseudosuchians reported from the Lower Dharmaram Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Kuttysuchus | K. minor[2] | Telangana | A typothoracine aetosaur. | |||
| Venkatasuchus | V. armatus[3] | Telangana | A typothoracine aetosaur | 
| ||
| cf. Paratypothorax | sp. | Telangana | A typothoracine aetosaur. | |||
| cf. Nicrosaurus | sp. | Telangana | A mystriosuchin parasuchid. | |||
| cf. Desmantosuchus[4] | sp. | Telangana | A typothoracine aetosaur. | |||
| Desmatosuchinae indet.[3][4] | Telangana | Indeterminate typothoracine aetosaurs. | ||||
Correlations[edit | edit source]
The formation has been correlated with the Lower Elliot Formation (Karoo Basin) and Forest Sandstone of Africa, the Caturrita Formation of the Paraná Basin in Brazil, the Laguna Colorada and Los Colorados Formations (Ischigualasto-Villa Unión Basin) of Argentina, the Chinle Formation of North America, the Trossingen Formation of the Keuper of Germany, and the Nam Phong Formation of Thailand.[5]
See also[edit | edit source]
References[edit | edit source]
- ↑ 1.0 1.1 1.2 Novas et al., 2011, p.345
- ↑ Haldar, A.; Ray, S.; Bandyopadhyay, S. (2024). "A new paratypothoracin aetosaur (Archosauria: Pseudosuchia) from the Upper Triassic Dharmaram Formation of India and its biostratigraphic implications". Journal of Vertebrate Paleontology. e2439533. doi:10.1080/02724634.2024.2439533.
- ↑ 3.0 3.1 Haldar, A.; Ray, S.; Bandyopadhyay, S. (2023). "A new typothoracine aetosaur (Archosauria, Pseudosuchia) from the Upper Triassic of India with insights on biostratigraphy, diversification, and paleobiogeography". Journal of Vertebrate Paleontology. e2253292. doi:10.1080/02724634.2023.2253292.
- ↑ 4.0 4.1 Haldar, A.; Ray, S.; Bandyopadhyay, S. (2025). "First report of desmatosuchin aetosaurs (Diapsida, Archosauria) from the lower part of Dharmaram Formation and a biostratigraphic re-evaluation of the upper Triassic horizons of India". Historical Biology: An International Journal of Paleobiology: 1–30. doi:10.1080/08912963.2025.2569748.
- ↑ Novas et al., 2011, p.343
Bibliography[edit | edit source]
- Novas, Fernando E.; Ezcurra, Martín D.; Chatterjee, Sankar; Kutty, T.S. (2011), "New dinosaur species from the Upper Triassic Upper Maleri and Lower Dharmaram formations of central India", Earth and Environmental Science Transactions of the Royal Society of Edinburgh, 101 (3–4): 333–349, Bibcode:2010EESTR.101..333N, doi:10.1017/S1755691011020093, retrieved 6 April 2019doi:10.1017/S1755691011020093
Further reading[edit | edit source]
- Weishampel, David B.; Dodson, Peter; Osmólska, Halszka (2004), The Dinosauria, 2nd edition, Berkeley: University of California Press, pp. 1–880, ISBN 0-520-24209-2, retrieved 21 February 2019
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