Kallakurichi Formation

Maastrichtian geologic formation in India From Wikipedia, the free encyclopedia

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]

TypeGeological formation
Unit ofAriyalur Group
UnderliesOttakovil formation
OverliesSillakkudi formation
Quick facts Type, Unit of ...
Kallakurichi Formation
Stratigraphic range: Maastrichtian
~72–69 Ma
TypeGeological formation
Unit ofAriyalur Group
UnderliesOttakovil formation
OverliesSillakkudi formation
Lithology
PrimaryLimestone
Location
Coordinates11.1°N 79.1°E / 11.1; 79.1
Approximate paleocoordinates35.3°S 56.4°E / -35.3; 56.4
RegionTamil Nadu
CountryIndia
Type section
Named forKallakurichi
Kallakurichi Formation is located in India
Kallakurichi Formation
Kallakurichi Formation (India)
Kallakurichi Formation is located in Tamil Nadu
Kallakurichi Formation
Kallakurichi Formation (Tamil Nadu)
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Fossil content

The following fossils were reported from the formation:[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

Ornithischian
More information Ornithischians from the Kallakurichi Formation, Genus ...
Ornithischians from the Kallakurichi Formation
GenusSpeciesMaterialNotes
Stegosauridae[3] indet A Stegosaurid.
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Sauropods
More information Sauropods from the Kallakurichi Formation, Genus ...
Sauropods from the Kallakurichi Formation
GenusSpeciesMaterialNotes
?Titanosaurus[3] T. indicus A titanosaurian sauropod.
Megaloolithus[4] M. cylindricus Fossilised Eggs A Sauropod Oogenus.
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Theropods
More information Theropods from the Kallakurichi Formation, Genus ...
Theropods from the Kallakurichi Formation
GenusSpeciesMaterialNotes
Theropoda[3] indet A Theropod.
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Molluscas

More information Molluscas from the Kallakurichi Formation, Genus ...
Molluscas from the Kallakurichi Formation
GenusSpeciesMaterialNotes
Inoceramus[5] I. bulbus A Clam.
I. tamulicus
Pycnodonta[5] P. vesicularis A Clam.
Ostrea (Alectryonia)[5] sp. A Clam.
Anisomyon[5] A. indicus A snail.
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More information Brachiopods from the Kallakurichi formation, Genus ...
Brachiopods from the Kallakurichi formation
GenusSpeciesMaterialNotesMember
Gyrodina G. globosa[5]
Isocrania[6] I. multicostata
Neobulimina N. sp.[5]
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More information Foraminiferans from the Kallakurichi formation, Genus ...
Foraminiferans from the Kallakurichi formation
GenusSpeciesMaterialNotesMember
Textulariina T. nacataensis[5]
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More information Rhynchonellatans from the Kallakurichi formation, Genus ...
Rhynchonellatans from the Kallakurichi formation
GenusSpeciesMaterialNotesMember
Rectithyris R. subdepressa[5]
Rhynchonella R. sp.[5]
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More information Sea Urchins from the Kallakurichi formation, Genus ...
Sea Urchins from the Kallakurichi formation
GenusSpeciesMaterialNotesMember
Hemipneustes H. compressus[7]
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See also

References

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