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- Title
Fishes of the Khuiala Formation (Early Eocene) of the Jaisalmer Basin, Western Rajasthan, India.
- Authors
Kumar, Kishor; Rana, Rajendra Singh; Singh, Hukam
- Abstract
A newly discovered assemblage of the Early Eocene (Ypresian) fish is recorded from the lower part of the Khuiala Formation of the Jaisalmer Basin, Western Rajasthan. It consists of exceptionally well preserved but mostly isolated teeth and some dermal denticles of fairly diverse ichthyofauna. Based on isolated teeth, 14 taxa belonging to six elasmobranch and five teleostean families have been identified, including a probably new but unnamed species of the nurse shark, Ginglymostoma. Other taxa comprise Galeorhinus sp., Hemiscyllium sp., Rhinobatos sp., Gymnura sp., Heterotorpedo sp., Dasyatis sp. 1, Dasyatis sp. 2, Coupatezia sp., Sphyraena sp., Eutrichiurides sp., Sparus sp., Stephanodus lybicus and Diodon sp. Among these, Hemiscyllium and Coupatezia are new to the subcontinent. Among the Palaeocene-Eocene ichthyofaunas documented from India, this Khuiala assemblage is closest to the Lower Eocene fish assemblage from the subsurface Cambay Shale of Vastan Lignite Mine, Surat District, Gujarat. It is a dominantly shallow-water marine assemblage typically lacking coastal freshwater elements.
- Subjects
INDIA; FISHES; GINGLYMOSTOMA; NURSE shark; FRESHWATER biology; EOCENE stratigraphic geology
- Publication
Current Science (00113891), 2007, Vol 93, Issue 4, p553
- ISSN
0011-3891
- Publication type
Article