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

Asit K. Guha ¹, K. Gopikrishna ¹

Affiliations
1 Department of Geology and Geophysics, Indian Institute of Technology, Kharagpur - 721 302, IN

Abstract

Five new fossil species, three of the family Steginoporellidae Hincks (Labioporella bassleri, Labioporella hariparensis and Steginoporella bhujensis) and two of the family Schizoporellidae Jullien (Schizoporella sowerbyi and Therenia indica), from the Tertiary sequences of western Kachchh Gujarat are described and illustrated. Significance of the evolutionary, biogeographical and paleoecological aspects of some of these taxa is added.

Keywords

Bryozoa, Cheilostomata, Tertiary, Biogeographical Distribution, Kachchh, Gujarat.

Full Text

     

Asit K. Guha ¹, K. Gopikrishna ¹

Affiliations
1 Department of Geology and Geophysics, Indian Institute of Technology, Kharagpur 721 302, IN

Abstract

Seven bryozoan species belonging to six genera in five families under the Order Cyclostomata are described and illustrated for the first time from the Harudi Formation (Lutetian) of wcstern Kachchh, Gujarat. They are Stornutoporu illiesae n. sp., Voigtopora reticulata n .sp., Discosparsa lakhpatensis n. sp., ldmindronea sp.,Oncousoecia narediensis n.sp.,' proboscina' sp. and Plagioecia taylori n. sp. Of these five are new to science.

Keywords

Bryozoa, Cyclostomata, Harudi Formation, Lutetian Epoch, species, Kachchh, Gujarat.

Full Text

     

Asit K. Guha ¹, K. Gopikrishna ¹

Affiliations
1 Department of Geology and Geophysics, Indian Institute of Technology, Kharagpur -721302

Abstract

Eight cheilostomate bryozoan species (Aplousina sp., Copidozourzt feddeni n, sp., Crassimarginatella blanfordi n. sp., C. ukirensis n. sp., Marginaria sengrrptai n. sp., Planicellaria kharaiertsis n. sp., P. naliyaensis n. sp. and Reptoporina chhasraensis n. sp. belonging to the family Calloporidae Norman, 1903 are described and jllustsated for the first time from the Tertiary (Lutetian to Aquitanian) sequences of western Kachchh, Gujarat. In the Tertiary bryozoan assemblages of this area, tRis family has the highest generic diversity.

Keywords

Bryozoa, Cheilostomata, Calloporidae, Tertiary, Diversity, Kachchh, Gujarat.

Full Text