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Showing 1 to 20 of 31 for “"ostracod"”.
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The Morphology of Ostracod Molt Stages
Made available in DSpace on 2014-12-04T19:13:12Z (GMT). No. of bitstreams: 1 0001398.pdf: 16493564 bytes, checksum: 4afa8b96d4e075195ea667e42de73fda (MD5) Previous issue date: 1949
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Some Ostracod Genera of the Subfamily Campylocytherinae
Made available in DSpace on 2014-12-09T20:34:35Z (GMT). No. of bitstreams: 1 6901411.pdf: 5925500 bytes, checksum: 67da21ca1a90a47a0c3131aa308871d5 (MD5) Previous issue date: 1968
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Postglacial ostracod distribution and paleoecology, Devils Lake basin, northeastern North Dakota
… The cores were sampled, for the recovery of the ostracods, at 10-cm intervals. Fifteen species of ostracods were present in the studied cores: 8 candonids, 1 cyclocyprid, 3 cyprids, and 3 limnocytherids. Two distinct faunas are recognized. The Devils Lake-East Devils Lake fauna consists of …
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The entocytherid ostracod fauna of the James and York River basins
Entocytherid ostracods were collected on crayfishes inhabiting the James and York River basins of Virginia. Of the seventeen species encountered, only one (Donnaldsoncythere ardis) seems to be endemic. Ankylocythere ancyla, Dactylocythere banana, Dt. falcata, Dt. suteri, Donnaldsoncythere ardis, …
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Paleoecology of late quaternary Molluscan-Ostracod assemblages from the Norwood site, southeastern Minnesota
<p>Well-preserved fossils, including mollusks, ostracods, beetles and plant remains were extracted from sediments at the Norwood Site in southeastern Minnesota during July, 1977. Stratigraphic units, in ascending order, were: (1) sandy claystone, (2) clayey siltstone, (3) sandy siltstone, and (4) …
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Study of Post-Pleistocene Ostracod Distribution in the Soft Sediments of Southern Lake Michigan
Made available in DSpace on 2014-12-11T18:10:13Z (GMT). No. of bitstreams: 1 7514086.pdf: 11674853 bytes, checksum: c799261c65e0ae13739dda4b9035b9f0 (MD5) Previous issue date: 1975
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The Morphology, Ontogeny, and Classification of The Ostracod Families Bairdiidae, Cypridae, Cytherellidae, and Healdiidae
Made available in DSpace on 2014-12-04T19:13:18Z (GMT). No. of bitstreams: 1 0002746.pdf: 14737369 bytes, checksum: 7d28bdc8dfc0f4b561304220ead89581 (MD5) Previous issue date: 1951
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Biodiversity crisis and recovery during the Triassic-Jurassic greenhouse interval: testing ocean acidification hypotheses
… hisingeri and Plagiostoma gigantea and the ostracod Ogmoconchella aspinata collected from Triassic and Jurassic rocks from two locations in southwest England. Palaeotemperature was reconstructed from examination of these fossils and from the literature and atmospheric pCO2 estimated from …
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The holocene ostracods of the Agulhas Bank, South Africa : their classification, distribution and ecology
An analysis of the Holocene ostracod fauna of the Agulhas Bank has been carried out on seventy-three surficial sediment samples. Sixty-six species of Ostracoda have been recorded, of which fifty-nine species are accounted for in forty genera and the remaining seven species are of indeterminate …
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The palaeoenvironments and stratigraphy of the Lincolnshire Limestone Formation (Middle Jurassic: Bajocian) of Northamptonshire and southern Lincolnshire
… from Brauncewell. A low diversity microfauna of ostracods and benthic foraminifera is known from more of the sampled horizons at Clipsham and Copper Hill and up to four horizons at Brauncewell. This fauna has not been recorded at Cowthick. The ostracod Praeschuleridea subtrigona occurs with other …
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Ecology of Lake District ostracoda
Freshwater ostracods are potentially useful for environmental monitoring and, since their calcified valves may be preserved in lake sediments, are also valuable in palaeolimnological studies of environmental pollution such as eutrophication and surface water acidification. To establish a data-base …
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Cretaceous ostracoda of the super family Cytheracea from Iraq, their biostratigraphy and correlation with adjacent regions
The cretaceous ostracods of Iraq are poorly known, so the aim of the project was to study their taxonomy and to discover their value in correlation between wells in Iraq and between Iraq and neighbouring countries. The Cenomanian-Santonian ostracods of the superfamily Cytheracea were studied in …
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Turonian (Late Cretaceous) Ostracoda from Dover, south-east England
Ostracod assemblages from samples collected through the Turonian Stage of the Late Cretaceous from Dover, Kent, south-east England, consist of one hundred and three species group taxa. These are described and illustrated. This represents a significant increase in the knowledge of the Turonian …
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Quaternary environmental changes in the fluvial and faunal history of central Northamptonshire
… central Northamptonshire. It uses new freshwater ostracod data which are interpreted using information on Quaternary and present day habitats and examines in detail associated patterns of environmental change in coarse sediments from which the ostracods were extracted. Stratigraphic, lithological …
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Palaeogene ostracods from the South African continental shelf
… Data on South African Cretaceous and Palaeogene ostracod faunas are discussed in terms of: faunal associations for the South African Palaeogene JC-1, Agulhas Bank and west coast provinces; characteristic species of Upper Eocene and Upper Eocene to Oligocene strata; generic variations across the …
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A discussion of the Cytherinae (Ostracoda) with description of two new species
… is concerned with the description of two new ostracod species, and the discussion of their affinities with other species in the subfamily Cytherinae. In this discussion reference is made to the morphological features of several genera. At this point it must be made clear that although the …
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Middle Miocene ostracoda from northern Iraq
The Ostracoda from nine sections of the Lower Fars Formation, Northern Iraq, Tel-Hajer well-1, Sheikh Ibrahim locality, Dohuk locality, Sheikhan locality, Bashiqa locality, Kirkuk well-208, Bai-Hassan well-33, Hamrin well-2 and the Naft Khana well-34, have been studied in detail.One hundred and …
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The Effects of Ultraviolet-B Radiation on Aquatic Invertebrates
… Scapholeberis kingii, and Daphnia magna, the ostracod Cyprinotus incongruens, and the amphipod Hyalella azteca. Among the species, 96-h LD₅₀ estimates were quite variable, ranging from 4.2 to 84.0 μW/cm². These estimates indicated S. kingii to be highly sensitive, H. azteca, C. reticulata, and …
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Sedimentological analyses of late Pleistocene sediments from Lake Lisan in the Jordan River Valley, Israel
… calcite and shells of the brackish water ostracod Cyprideis torosa in the sediments, as well as additional shells of species such as Humphcypris subterranea, Heterocypris salina and Ilyocypris sp. in the samples indicate that the water at the location of the Quarry section was at least …
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