Freshwater Ostracoda (Crustacea) of India -a checklist (original) (raw)
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Ostracoda from Ennore creek, Tamil nadu
Micropalaeontological investigation has been carried out, for the first time to study the systematics of Recent Ostracoda from the Ennore Creek, north of Chennai, particularly in the view of the insufficient information on these tiny organisms from the marginal marine environments of the Indian subcontinent. In the creek, 20 sediment samples were collected during February, 2006. All the sediment samples were subjected to standard micropalaeontological techniques and ostracod fauna was retrieved. In the study area, a total of 30 species belonging to 24 genera, 15 families, 2 superfamilies and 2 suborders of Podocopida, have been identified. Of these, four species belong to Platycopa and the rest to Podocopa. An up-to-date synonymy along with remarks on the taxa has been given. All the species are illustrated with Scanning Electron Microscope photographs. From the zoogeographical distribution of the fauna of the study area, it is observed that the assemblage shows close affinity with the Indo-Pacific faunal province.
Ostracod faunal assemblages of the Lameta Formation from its classic localities in Jabalpur Cantonment, Madhya Pradesh, and Nand Dongargaon Basin, Chandrapur District, Maharashtra have been studied for their comparison between the two basins. The sections examined are: Chui Hill, Bara Simla Hill and Chhota Simla Hill in Jabalpur Cantonment and Dongargaon Hill and Pisdura Hill in the Nand-Dongargaon Basin. The Lameta Formation in the two basins has yielded 41 species. Of these, 5 species Paracypretta indica, Cypridopsis ashui, C. huenei, Candona? chuiensis, and Cypridea (Pseudocypridina) jabalpurensis – are new. Thirty species have been assigned to species previously described from the Lameta Formation and the Deccan Inter-trappean beds of central and western peninsular India. Six species are left in open nomenclature. All the ostracod species are described and illustrated and a correlation of the Lameta Formation is undertaken on the basis of the sections studied, and the age and affinity of their ostracods are also discussed.
Micropalaeontological investigation has been done for the first time to study Recent freshwater Ostracodes from Perumal Eri, Cuddalore District, Tamil Nadu. For this purpose, ten surface sediment samples were collected and these samples have yielded nine species. They belong to the following genera: Cyprinotus, Stenocypris, Candona, Cyclocypris, Ilyocypris and Darwinula), 4 families, 2 superfamilies (Cypridacea and Darwinulacea) of the suborder Podocopa and the order Podocopida. Remarks and update synonymy for all the species are given. The zoogeographic distribution of the fauna reveals that the assemblage is confined to the Oriental Province and few forms are extended to the Ethiopian Province.
RECENT OSTRACOD BIODIVERSITY FROM SHELF TO SLOPE SEDIMENTS OF GULF OF MANNAR, INDIA
The present study has been focused to create the baseline data for the distribution and biodiversity of Ostracoda from the continental shelf to slope sediments of Gulf of Mannar. For the purpose, 5 short core samples were collected through multi-corer, ranged in water depth from 58 m to 1887 m (shallow to deep-marine water) during Cruise SSD-004 (ORV Sindhu Sadhana). In which, a total of 4355 ostracod specimens were recovered, belonging to 82 species and 51 genera. Of these, 14 species were recorded for the first time from the Indian waters. Bathymetric distribution of Ostracoda in all the five multi-core samples are studied, in which Propontocypris bengalensis, a species that is dominantly present in shallow water region (MC-8). Species of Krithe recorded only in deeper water regions (MC-2 and MC-60). Xestoleberis sp. and Paracypris sp. are the only species which were present from the continental shelf to slope sediments of Gulf of Mannar. The faunal carapaces are fresh, shiny, and not pyritised. The ornamentation on the carapaces changes gradually in accordance with the sediments that grades from coarse to fine towards the deeper water and the population of ostracod also varies from shallow to deeper water sediments. Core-wise distributions of ostracods species, ecological implications and species diversity have also been discussed.
Indian intertrappean Ostracoda in the collections of The Natural History Museum, London
Cretaceous Research, 2003
Study of historical collections in the Department of Palaeontology, The Natural History Museum, London (housed both in Micropalaeontology and Mollusca) has yielded further important Indian intertrappean Ostracoda. In this paper eight species are described and illustrated, one of them being new. The species are: Limnocythere sp., Cypridopsis palaichthonos Bajpai and Whatley, C. wynnei Whatley and Bajpai, C. alphospilotos sp. nov., ?Eucypris verruculosa Whatley, Bajpai and Srinivasan, Mongolianella cylindrica (Sowerby), M. hislopi (Jones) and ?Moenocypris hunteri (Jones). A lectotype is designated for Cypris (=Mongolianella) cylindrica from Sowerby's rediscovered syntypes, but although Jones's two species, Cypris (=Mongolianella) hislopi and C.
2010
Eight species, none of which were very abundant, were encountered at Mamoni, in the Kota District of southeastern Rajasthan State, India. The fauna was recovered from an approximately 1 m thick bed of cherty marl and chert overlying a volcanic sequence, near the village of Mamoni. This is the most northerly occurrence of intertrappean deposits. The low diversity of the fauna is probably due to low abundance. Two new species, Mongolianella subarcuata sp. nov. and Eucypris cantantion sp. nov. are described, which demonstrates the fact that even a low diversity fauna from such an isolated locality can reveal new species. The remaining six species have all been described from deposits of the same age from elsewhere to the south and west in the Deccan Volcanic Province.