Redescription of Vorticella oceanica Zacharias, 1906 (Ciliophora: Peritrichia) with notes on its host, the marine planktonic diatom Chaetoceros coarctatum Lauder,1864

Hydrobiologia ◽  
1996 ◽  
Vol 337 (1-3) ◽  
pp. 27-36 ◽  
Author(s):  
Sachiko Nagasawa ◽  
Alan Warren
Keyword(s):  
Planktonic Diatom ◽  
Vorticella Oceanica

Some centric diatoms (Bacillariophyta) from Neogene deposits of the Fisher Massif (Prince Charles Mountains, East Antarctica)

2011 ◽  
Vol 45 ◽  
pp. 32-49
Author(s):  
R. M. Gogorev ◽  
Z. V. Pushina
Keyword(s):  
Marine Sediments ◽  
East Antarctica ◽  
Benthic Diatoms ◽  
Detailed Data ◽  
Planktonic Algae ◽  
Centric Diatoms ◽  
Planktonic Diatom ◽  
Oceanic Species ◽  
Diatom Complexes

The richest diatom complexes have revealed due to the study of glacial-marine sediments sampled in the Fisher Massif (Prince Charles Mountains, East Antarctica) during 52nd and 53rd Russian Antarctic Expeditions (Polar Marine Geol. Survey Expedition) in 2006/07 and 2007/08. Three diatom complexes are distinguished according to different palaeoecological conditions: the planktonic one is located in the basis of the outcrop, while mixed planktonic-benthic and benthic ones being located above. The planktonic diatom complexes are dominated by two oceanic species Actinocyclus ingens (up to 8%) and Denticulopsis simonseni (up to 80%). There are 15 planktonic algae, e. g. Eucampia аntarctica, Fragilariopsis spp., Rhizosolenia spp., Rouxia antarctica, Podosira antarctica sp. nov., Stellarima microtrias; and also unknown and non-described benthic diatoms Achnanthes sp., Cocconeis spp., Rhabdonema (s. l.) spp. and Synedra (s. l.) spp. Detailed data on morphology and taxonomy of 10 centric diatoms are presented, including 3 newly described species.

Methods and Applications of Cenozoic Marine Diatom Biostratigraphy

2007 ◽  
Vol 13 ◽  
pp. 61-83 ◽  
Author(s):  
Reed P. Scherer ◽  
Andrey Yu. Gladenkov ◽  
John A. Barron
Keyword(s):  
North Pacific ◽  
Marine Diatom ◽  
Diatom Assemblages ◽  
Ocean Drilling ◽  
The North ◽  
Planktonic Diatom ◽  
Low Latitudes ◽  
The Antarctic ◽  
The North Pacific ◽  
Early Paleogene

Diatoms provide the chief Cenozoic biostratigraphic tool in marine sediments beneath high primary productivity zones, especially where calcareous fossils are rare or poorly preserved. Diatom biostratigraphy, which is based on originations and extinctions of unique taxa, is especially useful in circum-Antarctic, equatorial Pacific, and high latitude North Pacific marine successions, which are available largely from ocean drilling. Oligocene to Holocene diatom biostratigraphic zonations are correlated with the geopaleomagnetic timescale, resulting in age control of million-year to as little as hundred-thousand year resolution. Paleocene and Eocene zonations are less well developed and have lower chronostratigraphic control, but are more widely applicable, because planktonic diatom assemblages of the globally warm early Paleogene were less provincial. We review the principals and methods of biostratigraphy and the application of diatoms to age control in stratigraphic successions worldwide. Distinct biostratigraphic zonations defined for the low latitudes, the North Pacific and the Antarctic, are reviewed, and Atlantic records and Antarctic coastal records are discussed. New biostratigraphic tools are introduced, including multidimensional graphic correlation of published diatom ranges.

MIRALTIA THRONDSENIIGEN.NOV., SP.NOV., A PLANKTONIC DIATOM FROM THE GULF OF NAPLES

1987 ◽  
Vol 2 (2) ◽  
pp. 205-211 ◽  
Author(s):  
Donato Marino ◽  
Marina Montresor ◽  
Adriana Zingone
Keyword(s):  
Gulf Of Naples ◽  
Planktonic Diatom
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