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Lameta Formation

Coordinates: 23°12′N 80°00′E / 23.2°N 80.0°E / 23.2; 80.0
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Lameta Formation
Stratigraphic range: Maastrichtian
~66 Ma
↓
TypeGeological formation
UnderliesDeccan Traps deposits
OverliesPrecambrian Basement
Area5,000 km2 (1,900 sq mi)
ThicknessVariable, typically 18–45 m (59–148 ft)
Lithology
PrimaryClaystone, sandstone limestone
OtherConglomerate
Location
Coordinates23°12′N 80°00′E / 23.2°N 80.0°E / 23.2; 80.0
Approximate paleocoordinates24°42′S 63°12′E / 24.7°S 63.2°E / -24.7; 63.2
RegionWestern India
Country India
ExtentMadhya Pradesh, Gujarat, Maharashtra
Lameta Formation is located in India
Lameta Formation
Lameta Formation (India)

The Lameta Formation, also known as the Intertrappean Beds is a sedimentary rock formation found in Madhya Pradesh, Gujarat, and Maharashtra, India. It is of Maastrichtian age (Late Cretaceous), and is notable for its dinosaur fossils. Many dubious names have been created for isolated bones, but several genera of dinosaurs from these rocks are well-supported, including the titanosaur sauropod Isisaurus and the abelisaurs Indosaurus, Indosuchus, Laevisuchus, and Rajasaurus.[1] As well as mammals, snakes and other fossils.

Dinosaurs

Genus Species Location Stratigraphic position Material Notes Images
Indosaurus I. matleyi Partial skeleton, including a partial skull.[2]
Brachypodosaurus B. gravis "Humerus."[3]
Coeluroides C. largus "Isolated vertebrae."[4]
Dryptosauroides D. grandis "Vertebrae."[4]
Indosuchus I. raptorius Cranial remains, including two braincases, as well as a nearly complete skeleton.[2]
Isisaurus I. colberti
Jainosaurus J. septentrionalis "Basicranium and partial postcranial skeleton."[5]
Jubbulpuria J. tenuis "Vertebrae."[4]
Lametasaurus L. indicus "Sacrum, ilia, tibia."[4] "Sacrum, ilia, tibia, spines, armor."[6]
Laevisuchus L. indicus Only vertebrae.[2]
Ornithomimoides O. barasimlensis "Vertebrae."[4]
O. mobilis "Vertebrae"[4]
Orthogoniosaurus O. matleyi "Tooth"[4]
Rahiolisaurus R. gujaratensis
Rajasaurus R. narmadensis
Titanosaurus T. blanfordi "Caudal vertebrae."[7]
T. rahioliensis "Teeth"[8]

Snakes

Genus Species Location Stratigraphic position Material Notes Images
Sanajeh S. indicus A skull, precloaca vertebrae and ribs. A madtsoiid snake
Sanajeh about to attack a titanosaur hatchling
Indophis I. sahnii Naskal microvertebrate site Vertebrae

Mammals

Genus Species Location Stratigraphic position Material Notes Images
Bharattherium B. bonapartei Kisalpuri
Deccanolestes D. hislopi Naskal microvertebrate site Molars, calcanea, astralgi, humerus, ulna
D. robustus Naskal microvertebrate site "Dental material and an astragalus"
D. narmadensis Kisalpuri
Kharmerungulatum K. vanvaleni Kisalpuri
Dakshina D. jederi Naskal microvertebrate site Teeth Sudamericid
Sahnitherium S. rangapurensis Rangapur microvertebrate site Upper Molar

Turtles

Genus Species Location Stratigraphic position Material Notes Images
Jainemys J. pisdurensis A bothremydid soft shelled turtle

See also

References

  1. ^ Weishampel et al., 2004, pp.517-606
  2. ^ a b c "Table 3.1," in Weishampel, et al. (2004). Page 49.
  3. ^ "Table 17.1," in Weishampel, et al. (2004). Page 367.
  4. ^ a b c d e f g "Table 3.1," in Weishampel, et al. (2004). Page 50.
  5. ^ "Table 13.1," in Weishampel, et al. (2004). Page 269.
  6. ^ "Table 17.1," in Weishampel, et al. (2004). Page 368.
  7. ^ "Table 13.1," in Weishampel, et al. (2004). Page 270.
  8. ^ "Table 13.1," in Weishampel, et al. (2004). Page 271.

Bibliography

  • Template:Cite LSA ISBN 0-520-24209-2
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