ostracod

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ostracod

a small, aquatic, bivalved crustacean of the subclass Ostracoda. The calcified shells of ostracods form important indicators in palaeontology and are important in palaeoclimatological studies as they are sensitive to differing concentrations of dissolved materials.

Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

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Crustacea

References in periodicals archive ?

Scarce fragments of bivalves, brachiopods, echinoderms and ostracods. F2.

Revisiting the late Jurassic-Early Cretaceous of the NW South Iberian Basin: new ages and sedimentary environments

Chironomid larvae, ostracods, and small aquatic snails were also important foods.

Resource partitioning in two stream salamanders, Dicamptodon tenebrosus and Rhyacotriton cascadae, from the Oregon Cascade Mountains

Cosmopolitanism is the prominent feature of distribution of freshwater ostracods. Victor and Fernando (1982) while discussing the distribution in south-east Asia have shown that 14 genera of family Cyprididae were cosmopolitan and one genus each had the affinities of Palaeartic-Oriental, Australian-Ethiopian region.

New Record of Some Freshwater Seed Shrimps (Ostracoda: Podocopida) from Lakes of Sindh, Pakistan

Thermodiaptomus was more abundant in the diet of males of both species, while ostracods recorded higher numerical abundance as a food item in females of both species.

Condition factor and diet of Chrysichthys nigrodigitatus and Chrysichthys auratus (Siluriformes: Bagridae) from Aiba Reservoir, Iwo, Nigeria

Geologists find ostracods useful in order to help recreate past environments - the type of ostracod found in a rock sample would, for example, help to determine a picture of ancient conditions like water depth and salinity.

425-mln-yr-old creature is only third ever to be found in ancient rocks

Arctic freshwater ostracods from modern periglacial environments in the Lena River Delta (Siberian Arctic, Russia): Geochemical applications for palaeoenvironmental reconstructions.

Biogeography of freshwater ostracodes in the Canadian Arctic Archipelago

The ostracods of Illinois--their biology and taxonomy.

A novel crustacean swimming stroke: coordinated four-paddled locomotion in the cypridoidean ostracode Cypridopsis vidua (Muller)

Additionally, nineteen carbonate rock samples, at approximately 1-m intervals, were collected from limestone beds of the Vergale-50 drill core above and below the Collector for micropalaeontological analysis based on ostracods. These samples were disintegrated using sodium hyposulphite with repeated heating and cooling (Meidla 1996).

A siliciclastic shallow-marine turbidite on the carbonate shelf of the Ordovician Baltoscandian palaeobasin/Terrigeenne madalmere turbidiit Ordoviitsiumi Baltoskandia paleobasseini karbonaatsel selfil

Overall, the estuary midstream and upstream supported the highest densities of protozoans, rotifers, and most meroplanktonic larvae, whereas the estuary downstream supported the highest densities of copepods, cladocerans, ostracods, molluscs, chaetognths, and larvaceans.

Environmental Determinants of Zooplankton Community in the Damietta Estuary of the Nile River, Egypt

This facies is bioclastic grainstone and consists of brachiopod shells, bryozoans, ostracods, gastropods, crinoids and mollusks (Fig.

Diagenetic History and Microfacies Analysis of Upper Permian Wargal Limestone in the Central Salt Range, Pakistan

The amphipod, copepod, tanaidaceous and polychaete trophic groups being the preferential food (FO >50%) in at least three of the species studied; and the foraminifera, ostracods and UOM (unidentified organic matter) were present preferentially in some of the species analyzed (E.

Feeding habits of the mojarras (Gerreidae) population in the hyperhaline lagoon system of Ria Lagartos, Yucatan, Mexico

The new research, published this month in the journal Nature, documented the fates of a class of shrimp-like animals called cytheroid ostracods, among which there are dozens of different species -- some living, some extinct.