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Lower Maleri Formation

The Lower Maleri Formation is a sedimentary rock formation found in Andhra Pradesh and Telangana, India. It is the lowermost member of the Pranhita–Godavari Basin. It is of late Carnian to early Norian age (Upper Triassic), and is notable for its fossils of early dinosaurs, including the basal saurischian (possible theropod) Alwalkeria.[1]

Lower Maleri Formation
Stratigraphic range: Late Carnian–early Norian
TypeGeological formation
Unit ofGondwana Group
UnderliesUpper Maleri Formation
OverliesBasement
Location
Coordinates19°12′N 79°42′E / 19.2°N 79.7°E / 19.2; 79.7
Approximate paleocoordinates36°24′S 38°12′E / 36.4°S 38.2°E / -36.4; 38.2
RegionAndhra Pradesh & Telangana
Country India
ExtentPranhita–Godavari Basin
Lower Maleri Formation is located in India
Lower Maleri Formation
Lower Maleri Formation (India)

Vertebrate fauna

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cf. Angistorhinus and cf. Typothorax have also been recovered from it.[2][3]

Vertebrates from the Lower Maleri Formation
Genus Species Location Stratigraphic position Material Notes Images
Alwalkeria[1] A. maleriensis[1] Andhra Pradesh "Partial skull and postcranial remains."[4]
 
Panthasaurus P. maleriensis A temnospondyl
Exaeretodon E. statisticae[2]
 
Hyperodapedon H. huxleyi[2]
 
Malerisaurus M. robinsonae[2]
 
Massospondylus M. hislopi Andhra Pradesh "Isolated vertebrae."[5] Later found to be indeterminate prosauropod remains
Parasuchus P. hislopi[2]
Plateosaurus Indeterminate Andhra Pradesh Later found to be indeterminate prosauropod remains
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.

Correlations

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The formation has been correlated with the Molteno Formation (Karoo Basin) and Pebbly Arkose Formation of Africa, the Santa Maria Formation of the Paraná Basin in Brazil, the Ischigualasto Formation of the Ischigualasto-Villa Unión Basin of Argentina and the lowermost Chinle Formation of North America.[6]

See also

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References

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  1. ^ a b c Weishampel et al., 2004, pp.525–527
  2. ^ a b c d e Novas et al, 2011
  3. ^ Kutty et al., 2007
  4. ^ "Table 2.1," in Weishampel, et al. (2004). Page 26.
  5. ^ "Table 12.1," in Weishampel et al., 2004, p.236
  6. ^ Novas et al., 2011, p.343

Bibliography

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  • 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 2019
  • Kutty, T.S.; Chatterjee, S.; Galton, P.M.; Upchurch, P. (2007), "Basal sauropodomorphs (Dinosauria: Saurischia) from the Lower Jurassic of India: their anatomy and relationships", Journal of Paleontology, 81 (6): 1552–1574, Bibcode:2007JPal...81.1218K, doi:10.1666/04-074.1
  • 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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