Chari Formation

Chari Formation
Chari Formation
Stratigraphic range: Callovian-Oxfordian; ~165–158 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Type	Geological formation
Sub-units	Dhosa Conglomerate, Dhosa Oolite & Dhosa Sandstone Members
Lithology
Primary	Limestone, siltstone, sandstone
Other	Oolite
Location
Coordinates	23°30′N 69°24′E / 23.5°N 69.4°E
Approximate paleocoordinates	23°36′S 32°36′E / 23.6°S 32.6°E
Region	Gujarat
Country	India
Type section
Named for	Chari, "salt affected"
	Chari Formation (India) Chari Formation (Gujarat)

The Chari Formation is a Jurassic (Callovian to Oxfordian) geologic formation in Gujarat, western India. Dinosaur remains are among the fossils that have been recovered from the formation, although none have yet been referred to a specific genus. 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.

Fossil content

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

Sauropods of the Chari Formation
Genus	Species	Location	Stratigraphic position	Material	Notes	Image
Sauropoda indet.	Indeterminate	Jumara		JUM/V/1, proximal part of left tibia.	An indeterminate sauropod

Thalattosuchians

Thalattosuchians of the Chari Formation
Genus	Species	Location	Stratigraphic position	Material	Notes	Image
Steneosaurus?	S.? sp.	Dhosa Oolith		Two skulls, one of those skull is said to be 1602 mm in overall length.	A large teleosaurid thalattosuchian

Mollusks

Ammonites

Ammonites of the Chari Formation
Genus	Species	Location	Stratigraphic position	Material	Notes	Image
Choffatia	C. pardagatus	Jumara			A perisphincitid ammonite
Choffatia	C. cobra	Jumara			A perisphincitid ammonite
Indosphinctes	I. indica	Jumara			A perisphincitid ammonite
Phlycticeras	P. sp.	Jumara			A strigoceratid ammonite
Reineckeia	R. anceps	Jumara			A reineckeiid ammonite

Echinoderms

Echinoderms of the Chari Formation
Genus	Species	Location	Stratigraphic position	Material	Notes	Image
Alternacantha	A. schwermannorum	Jumara			A ophiacanthid brittle star
Hanshessia	H. trochitophila	Jumara			A ophiacanthid brittle star
Ishidacantha	I. fuersichi	Jumara			A ophiacanthid brittle star
Lapidaster	L. etteri	Jumara			A ophiacanthid brittle star
Ophiogaleus	O. dorecki	Jumara			A Ophiacanthid brittle star

References

↑ Chari Formation at Fossilworks.org
↑ Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
1 2 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.
1 2 3 4 5 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.
1 2 Ben Thuy; Christian A. Meyer (2013). "The pitfalls of extrapolating modern depth ranges to fossil assemblages: new insights from Middle Jurassic brittle stars (Echinodermata: Ophiuroidea) from Switzerland". Swiss Journal of Palaeontology. 132 (1): 5–21. Bibcode:2013SwJP..132....5T. doi:10.1007/s13358-012-0048-5. S2CID 129519447.
1 2 3 Ben Thuy (2013). "Temporary expansion to shelf depths rather than an onshore-offshore trend: the shallow-water rise and demise of the modern deep-sea brittle star family Ophiacanthidae (Echinodermata: Ophiuroidea)". European Journal of Taxonomy (48): 1–242. doi:10.5852/ejt.2013.48.

Bibliography

Weishampel, David B.; Dodson, Peter; Osmólska, Halszka (2004), The Dinosauria, 2nd edition, Berkeley: University of California Press, pp. 1–880, ISBN 0-520-24209-2, retrieved 2019-02-21{{citation}}: CS1 maint: publisher location (link)

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

[FWChari-1] Chari Formation at Fossilworks.org

[dinosaurdistribution-2] Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.

[:1-3] 1 2 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.

[:2-4] 1 2 3 4 5 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.

[ThuyMeyerSJPbrittlestars-5] 1 2 Ben Thuy; Christian A. Meyer (2013). "The pitfalls of extrapolating modern depth ranges to fossil assemblages: new insights from Middle Jurassic brittle stars (Echinodermata: Ophiuroidea) from Switzerland". Swiss Journal of Palaeontology. 132 (1): 5–21. Bibcode:2013SwJP..132....5T. doi:10.1007/s13358-012-0048-5. S2CID 129519447.

[EJT48-6] 1 2 3 Ben Thuy (2013). "Temporary expansion to shelf depths rather than an onshore-offshore trend: the shallow-water rise and demise of the modern deep-sea brittle star family Ophiacanthidae (Echinodermata: Ophiuroidea)". European Journal of Taxonomy (48): 1–242. doi:10.5852/ejt.2013.48.