Chari Formation

Chari Formation
Stratigraphic range: Callovian-Oxfordian
~165–158 Ma
TypeGeological formation
Sub-unitsDhosa Conglomerate, Dhosa Oolite & Dhosa Sandstone Members
Lithology
PrimaryLimestone, siltstone, sandstone
OtherOolite
Location
Coordinates23°30′N 69°24′E / 23.5°N 69.4°E / 23.5; 69.4
Approximate paleocoordinates23°36′S 32°36′E / 23.6°S 32.6°E / -23.6; 32.6
RegionGujarat
Country India
Type section
Named forChari, "salt affected"
Chari Formation is located in India
Chari Formation
Chari Formation (India)
Chari Formation is located in Gujarat
Chari Formation
Chari Formation (Gujarat)

The Chari Formation is a Jurassic (Callovian to Oxfordian) geologic formation in Gujarat, western India.[1] Dinosaur remains are among the fossils that have been recovered from the formation, although none have yet been referred to a specific genus.[2] The ammonite Reineckeia has also been found here. The skulls of two marine crocodiles have also been found and have been putatively identified as Steneosaurus.[3]

Paleobiota

Dinosaurs

Sauropods
Sauropods of the Chari Formation
Genus Species Locality Material Notes Photos
Sauropoda[4] indet Jumara Proximal part of hindlimb. A Sauropod

Pseudosuchians

Pseudosuchians of the Chari Formation
Genus Species Locality Material Notes Photos
?Steneosaurus[3] sp. Dhosa Oolith Two Skulls. A Teleosauridae Pseudosuchian.

Invertebrates

Mollusca
Molluscas of the Chari Formation
Genus Species Locality Material Notes Photos
Choffatia[4] C. pardagatus Jumara A Perisphincitidae Ammonite.
C. cobra
Indosphinctes[4] I. indica Jumara A Perisphincitidae Ammonite.
Phlycticeras[4] sp. Jumara A Strigoceratidae Ammonite.
Reineckeia[4] R. anceps Jumara A Reineckeiidae Ammonite.

See also

References

  1. ^ Chari Formation at Fossilworks.org
  2. ^ Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
  3. ^ a b Phansalkar, V. G.; Sudha, G.; A. S., Khadkikar (1994). "Giant marine reptilian skulls from the Jurassic of Kachchh, Gujarat". Current Science. 67(6): 460–461.
  4. ^ a b c d e Jana, Sudipta K.; Das, Shiladri (2002-01-10). "A report of a 157.8 m.y.-old dinosaur bone from the Jurassic marine Chari Formation, Kutch, Gujarat and its taphonomic significance". Current Science. 82 (1): 85–88.

Bibliography

Further reading

  • R. Dutta and S. Bardhan. 2016. Systematics, endemism and phylogeny of Indian proplanulitins (Ammonoidea) from the Bathonian–Callovian of Kutch, western India. Swiss Journal of Paleontology 135:23-56
  • M. Alberti, D. K. Pandey, and F. T. Fürsich. 2011. Ammonites of the genus Peltoceratoides Spath, 1924 from the Oxfordian of Kachchh, western India. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen 262:1-18
  • S. S. Das, S. Bardhan, and T. Kase. 2005. A new pleurotomariid gastropod assemblage from the Jurassic sequence of Kutch, western India. Paleontological Research 9(4):329-346
  • F. T. Fürsich, D. K. Pandey, W. Oschmann, A.K. Jaitly, and I.B. Singh. 1994. Ecology and adaptive strategies of corals in unfavourable environments: Examples from the Middle Jurassic of the Kachchh Basin, western India. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen 194(2–3):269-303
  • D. N. Ghosh. 1990. Biometry of two species of Kallirhynchia (Buckman) from Callovian beds of Kutch, India. Brachiopods Through Time 97-100