Kallakurichi Formation

Kallakurichi Formation Stratigraphic range: Maastrichtian ~70–66 Ma PreЄ Є O S D C P T J K Pg N ↓
Type	Geological formation
Unit of	Ariyalur Group
Lithology
Primary	Limestone
Location
Coordinates	[ ⚑ ] : 11°06′N 79°06′E / 11.1°N 79.1°E / 11.1; 79.1
Paleocoordinates	[ ⚑ ] 35°18′S 56°24′E / 35.3°S 56.4°E / -35.3; 56.4
Region	Tamil Nadu
Country	India
Type section
Named for	Kallakurichi
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The Kallakurichi Formation, alternatively spelled as Kallankurichchi or Kallankurichi Formation,^[1] 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.^[2]

Fossil content

The following fossils were reported from the formation:^[1]

• Gyrodina
  • Gyrodina globosa^[3]
  • Neobulimina sp.^[3]
• Textulariina
  • Textularia nacataensis^[3]
• Rhynchonellata
  • Rectithyris subdepressa^[3]
  • Rhynchonella sp.^[3]
• Bivalves
  • Inoceramus bulbus^[3]
  • I. tamulicus^[3]
  • Pycnodonta vesicularis^[3]
  • Ostrea (Alectryonia)^[3]
• Gastropods
  • Anisomyon indicus^[3]
• Echinoids
  • Hemipneustes compressus^[4]
• Fossil eggs
  • Megaloolithus cylindricus^[5]

See also

• List of dinosaur-bearing rock formations
  • List of stratigraphic units with dinosaur trace fossils
    • Dinosaur eggs

References

Bibliography

• Weishampel, David B.; Peter Dodson, and Halszka (eds.) Osmólska. 2004. The Dinosauria, 2nd edition, 1–880. Berkeley: University of California Press. Accessed 2019-02-21. ISBN:0-520-24209-2
• Kohring, R.; K. Bandel; D. Kortum, and S. Parthasararthy. 1996. Shell structure of a dinosaur egg from the Maastrichtian of Ariyalur (southern India). Neues Jahrbuch für Geologie und Paläontologie - Monatshefte 1996. 48–64.
• Aziz, S.A., and R. M. Badve. 1990. Occurrence of Hemipneustes Agassiz (Echinoid) from Tiruchirapalli Cretaceous, Tamil Nadu, India. Journal of the Geological Society of India 36. 326-330.
• Ayyasami, K. 1989. Genus Anisomyon (Gastropoda) from the Cretaceous of Southern India. Journal of the Geological Society of India 33. 361–364.

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