Results 161 to 170 of about 1,486 (212)

Mesopelagic fish responses to Pleistocene climatic variability in the Eastern Mediterranean and implications for the biological pump

open access: yes
Agiadi K   +7 more
europepmc   +1 more source

Standard Palaeogene Calcareous Nannoplankton Zonation

Nature, 1970
THE stratigraphic value of a group of marine minute algae usually referred to as the calcareous nannoplankton, first shown by Bramlette and Riedel1, has already been discussed2. A standard zonation, based partly on the investigations of Hay et al.3 and Bramlette and Wilcoxon4, has been proposed, and the Neogene calcareous nannoplankton zones have been ...
exaly   +3 more sources

Calcareous Nannoplankton

Notes for a Short Course: Studies in Geology, 1987
Calcareous nannoplankton are minute plant-like protists that live in the marine photic zone. There has been an exponential increase in nannoplankton studies in the last two decades, largely owing to the recognition of the usefulness of this group for biostratigraphic and paleoenvironmental interpretations.
William G. Siesser, Bilal U. Haq
openaire   +1 more source

Annotated index and bibliography of the calcareous nannoplankton V

Phycologia, 1966
Abstract This annotated index of 581 entries includes modern and fossil calcareous nannoplankton taxa of all levels, in addition to those appearing in the earlier index and supplements. Some 320 are new entries, 198 of which are valid and 122 invalid.
Alfred R. Loeblich, Helen Tappan
openaire   +1 more source

Calcareous Nannoplankton from the Tertiary of Alabama

Micropaleontology, 1967
Three biostratigraphic units are recognized on the basis of the vertical distribution of coccolithophorids and related calcareous nannofossils from the Upper Eocene, Lower Oligocene and Middle Oligocene of exposures at Little Stave Creek and St. Stephens Quarry, Alabama.
H. L. Levin, A. P. Joerger
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A Preparation Technique for Calcareous Nannoplankton

Micropaleontology, 1963
"Calcareous nannoplankton may be extracted and concentrated by 'short centrifuging'. A method of mounting the specimens on slides is described."
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Critical events in the evolutionary history of calcareous Nannoplankton

Historical Biology, 1991
Calcareous nannofossil diversity, and rates of speciation and extinction are calculated for five million year intervals from their first appearance in the Late Triassic through to the Present Day. Important evolutionary events are as follows: first appearance in the Late Triassic, Triassic-Jurassic boundary extinctions, Tithonian radiation (and the ...
Paul R. Bown   +2 more
openaire   +1 more source

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