Jaisalmer Formation
The Jaisalmer Formation is a Middle to Late Jurassic-aged geologic formation located in India near the city of Jaisalmer that consists mainly of marine deposits. The formation was first identified and defined by geologist Richard Dixon Oldham in 1886.
Jaisalmer Formation | |
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Stratigraphic range: Middle-Late Jurassic, | |
An outcrop of the Jaisalmer Formation which is the type locality for Tharosaurus indicus. Photographed between 2019-21. | |
Type | Geological formation |
Sub-units | Badabag Member, Fort Member, Hamira Member, Jajiya Member, Joyan Member, Kuldhar Member |
Underlies | Baisakhi Formation |
Overlies | Lathi Formation |
Thickness | Variable, typically 120–170 km (75–106 mi) |
Lithology | |
Primary | Siltstone, sandstone |
Other | Limestone |
Location | |
Coordinates | 26.911661°N 70.922928°E |
Country | India |
Extent | Jaisalmer |
Type section | |
Named for | Jaisalmer, India |
Named by | Richard Dixon Oldham |
Year defined | 1886 |
Dinosaur remains are among the known fossils recovered from this formation.
Strophodus jaisalmerensis, a hybodont, was named after this formation and the Jaisalmer District where its holotype was found.
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