Lower Dharmaram Formation

The Lower Dharmaram Formation is a sedimentary rock formation found in Andhra Pradesh, 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.

Lower Dharmaram Formation
Stratigraphic range: Latest Norian–Rhaetian
~211–202 Ma
TypeGeological formation
Unit ofGondwana Group
UnderliesUpper Dharmaram Formation
OverliesUpper Maleri Formation
Lithology
PrimarySandstone, Mudstone
Location
Coordinates19.2°S 79.6°W / -19.2; -79.6
Approximate paleocoordinates32.3°S 36.1°W / -32.3; -36.1
RegionAndhra Pradesh
Country India
ExtentPranhita–Godavari Basin
Type section
Named forDharmaram
Lower Dharmaram Formation (India)

Vertebrate fauna

cf. Paratypothorax, cf. Nicrosaurus, fragmentary remains of sauropodomorphs (ISI R279, 280, 281) and neotheropods (ISI R283) have also been recovered from it.[1]

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 reported from the Lower Dharmaram Formation
Genus Species Location Stratigraphic position Material Notes Images
Jaklapallisaurus J. assymetrica[1] Andhra Pradesh "ISI R279, distal end of right femur."[1] A plateosaurid, also found in the Upper Maleri Formation

Correlations

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 Trössingen Formation of the Keuper Group of Germany, and the Nam Phong Formation of Thailand.[2]

See also
  • List of dinosaur-bearing rock formations

References
  1. Novas et al., 2011, p.345
  2. Novas et al., 2011, p.343

Bibliography

Further reading
  • Weishampel, David B.; Peter Dodson, and Halszka Osmólska (eds.). 2004. The Dinosauria, 2nd edition, 1–880. Berkeley: University of California Press. Accessed 2019-02-21.ISBN 0-520-24209-2


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