Journal of Geological Society of India (Online archive from Vol 1 to Vol 78)

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A Restudy of the Ostracoda Cypris cylindrica Sowerby (in Malcolmson, 1840) from the Deccan Intertrappean Beds (Late Cretaceous) of Lakshmipur, Kachchh, Gujarat


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1 Department of Geology, Mohanlal Sukhadia University, Udaipur - 313 002, India
     

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Cypris cylindrica was originally described by Sowerby (in Malcolmson, 1840) from the Deccan Intertrappean sedimentary beds of the Sichel Hills, Andhra Pradesh. Whatley and Bajpai (2000) recorded the species during recent years from the Intertrappean of Lakshmipur, Kachchh district, Gujarat and stated that Kachchh specimens are identical with the types of the species housed in the Natural History Museum (NHM), London. They recorded the species as Mongolianella cylindrica. The species, however, lacks distinctive shape and hinge structure of Mongolianella and on the contrary closely resembles Stenocypris cylindrica major (Baird, 1859) in shape and internal characters including having adont hinge, large anterior vestibulum, arcuate lists or striae on free part of inner lamella, numerous short marginal pore canals and 6 large adductor scars, the topmost being much elongated. On these bases the species is herein transferred to the genus Stenocypris Sars, 1889.

Keywords

Cypris cylindrica, Stenocypris, Intertrappean Beds, Sichel Hills, Lakshmipur, Gujarat.
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  • A Restudy of the Ostracoda Cypris cylindrica Sowerby (in Malcolmson, 1840) from the Deccan Intertrappean Beds (Late Cretaceous) of Lakshmipur, Kachchh, Gujarat

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Authors

S. C. Khosla
Department of Geology, Mohanlal Sukhadia University, Udaipur - 313 002, India
M. L. Nagori
Department of Geology, Mohanlal Sukhadia University, Udaipur - 313 002, India
S. R. Jakhar
Department of Geology, Mohanlal Sukhadia University, Udaipur - 313 002, India
A. S. Rathore
Department of Geology, Mohanlal Sukhadia University, Udaipur - 313 002, India
Manisha Kumari
Department of Geology, Mohanlal Sukhadia University, Udaipur - 313 002, India

Abstract


Cypris cylindrica was originally described by Sowerby (in Malcolmson, 1840) from the Deccan Intertrappean sedimentary beds of the Sichel Hills, Andhra Pradesh. Whatley and Bajpai (2000) recorded the species during recent years from the Intertrappean of Lakshmipur, Kachchh district, Gujarat and stated that Kachchh specimens are identical with the types of the species housed in the Natural History Museum (NHM), London. They recorded the species as Mongolianella cylindrica. The species, however, lacks distinctive shape and hinge structure of Mongolianella and on the contrary closely resembles Stenocypris cylindrica major (Baird, 1859) in shape and internal characters including having adont hinge, large anterior vestibulum, arcuate lists or striae on free part of inner lamella, numerous short marginal pore canals and 6 large adductor scars, the topmost being much elongated. On these bases the species is herein transferred to the genus Stenocypris Sars, 1889.

Keywords


Cypris cylindrica, Stenocypris, Intertrappean Beds, Sichel Hills, Lakshmipur, Gujarat.

References