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Kallamedu Formation information


Kallamedu Formation
Stratigraphic range: Maastrichtian
~70.6–65.5 Ma
PreꞒ
O
S
D
C
P
T
J
K
Pg
N
TypeGeological formation
UnderliesNiniyur Formation
OverliesArchean Basement
ThicknessVariable, typically 5–5,000 km (3.1–3,106.9 mi)
Lithology
PrimaryClaystone, siltstone limestone
OtherConglomerate
Location
Coordinates11°41′46″N 79°24′46″E / 11.6962°N 79.4127°E / 11.6962; 79.4127
CountryKallamedu Formation India
ExtentKallamedu
Type section
Named forKallamedu village

The Kallamedu Formation is a Late Cretaceous (Maastrichtian) geologic formation located in the Ariyalur district of Tamil Nadu, India that forms part of the Ariyalur Group.[1] It dates to the Maastrichtian of the Late Cretaceous. Dinosaur remains and petrified wood samples are among the known fossils recovered from this formation.[2]

  1. ^ Memoirs of the Geological Survey of India. Oxford University. 1865. pp. 107–140.
  2. ^ Weishampel, David B; et al. (2004). "Dinosaur distribution (Late Cretaceous, Asia)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 593–600. ISBN 0-520-24209-2.

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