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Kallakurichi Formation

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Maastrichtian geologic formation in India

Kallakurichi Formation
Stratigraphic range: Maastrichtian
~72–69 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
TypeGeological formation
Unit ofAriyalur Group
UnderliesOttakovil formation
OverliesSillakkudi formation
Lithology
PrimaryLimestone
Location
Coordinates11°06′N 79°06′E / 11.1°N 79.1°E / 11.1; 79.1
Approximate paleocoordinates35°18′S 56°24′E / 35.3°S 56.4°E / -35.3; 56.4
RegionTamil Nadu
Country India
Type section
Named forKallakurichi
Kallakurichi Formation is located in IndiaKallakurichi FormationKallakurichi Formation (India)Show map of IndiaKallakurichi Formation is located in Tamil NaduKallakurichi FormationKallakurichi Formation (Tamil Nadu)Show map of Tamil Nadu

The Kallakurichi Formation, alternatively spelled as Kallankurichchi or Kallankurichi Formation, is a geological formation of the Ariyalur Group in Tamil Nadu, southern India whose strata date back to the Maastrichtian stage of the Late Cretaceous. Dinosaur eggs of Megaloolithus cylindricus are among the fossils that have been recovered from the sandy limestones of the formation.

Fossil content

The following fossils were reported from the formation:

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

Ornithischian
Ornithischians from the Kallakurichi Formation
Genus Species Material Notes
Stegosauridae indet A Stegosaurid.
Sauropods
Sauropods from the Kallakurichi Formation
Genus Species Material Notes
?Titanosaurus T. indicus A titanosaurian sauropod.
Megaloolithus M. cylindricus Fossilised Eggs A Sauropod Oogenus.
Theropods
Theropods from the Kallakurichi Formation
Genus Species Material Notes
Theropoda indet A Theropod.

Molluscas

Molluscas from the Kallakurichi Formation
Genus Species Material Notes
Inoceramus I. bulbus A Clam.
I. tamulicus
Pycnodonta P. vesicularis A Clam.
Ostrea (Alectryonia) sp. A Clam.
Anisomyon A. indicus A snail.
Brachiopods from the Kallakurichi formation
Genus Species Material Notes Member
Gyrodina G. globosa
Neobulimina N. sp.
Foraminiferans from the Kallakurichi formation
Genus Species Material Notes Member
Textulariina T. nacataensis
Rhynchonellatans from the Kallakurichi formation
Genus Species Material Notes Member
Rectithyris R. subdepressa
Rhynchonella R. sp.
Sea Urchins from the Kallakurichi formation
Genus Species Material Notes Member
Hemipneustes H. compressus

See also

References

  1. ^ Kallankurichchi Formation at Fossilworks.org
  2. Weishampel et al., 2004, pp.593-600
  3. ^ Weishampel, et al. (2004). "The Dinosauria. Second Edition." Pp 680.
  4. Kohring et al., 1996
  5. ^ Ayyasami, 1989
  6. Aziz & Badve, 1990

Bibliography

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