Abstract Views :247 |
PDF Views:2
Authors
Affiliations
1 Palaeobiology Group, Agharkar Research Institute, G.G. Agarkar Road, Pune – 411 004, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 72, No 6 (2008), Pagination: 774-780
Abstract
Well preserved flask shaped borings belonging to ichnogenus Gastrochaenolites Leymerie, (1842) are being reported from the Kalyanpur Limestone Member (Pliocene) of Dwarka Formation, Jamnagar district, Kathiawar Region, Gujarat. The ichnofauna consists of Gastrochaenolites ampullatus Kelly and Bromley, G. cluniformis Kelly and Bromley, G. lapidicus Kelly and Bromley, G. orbicularis Kelly and Bromley, G. ornatus Kelly and Bromley, G. torpedo Kelly and Bromley, G. turbinatus Kelly and Bromley, and Gastrochaenolites isp. Though individuals of groups other than bivalves are known to create Gastrochaenolites-like borings, these borings were evidently emplaced by bivalves alone, confirmed by the presence of bivalve casts in some of the specimens. This hardground suggests an intraformational break in deposition.
Keywords
Bioerosion, Gastrochaenolites, Neogene, Pliocene, Kathiawar, Gujarat.
