scholarly journals Fossil marine diatom resting spore morpho-genus Gemellodiscus gen. nov. in the North Pacific and Norwegian Sea

2004 ◽  
Vol 8 (4) ◽  
pp. 255-282 ◽  
Author(s):  
Itsuki Suto
Keyword(s):  
North Pacific ◽  
Marine Diatom ◽  
Norwegian Sea ◽  
The North ◽  
Resting Spore ◽  
The North Pacific

scholarly journals Taxonomy of the fossil marine diatom resting spore morpho-genera <i>Xanthioisthmus</i> Suto gen. nov. and <i>Quadrocistella</i> Suto gen. nov. in the North Pacific and Norwegian Sea

2006 ◽  
Vol 25 (1) ◽  
pp. 3-22 ◽  
Author(s):  
Itsuki Suto
Keyword(s):  
North Pacific ◽  
Marine Diatom ◽  
Northwest Pacific ◽  
New Genera ◽  
Norwegian Sea ◽  
The North ◽  
Resting Spore ◽  
Resting Spores ◽  
Diatom Genus ◽  
The North Pacific

Abstract. The morphology and taxonomy of the fossil diatom resting spore morpho-genera Xanthioisthmus Suto gen. nov. and Quadrocistella Suto gen. nov. are described. The two new genera are probably fossil resting spores of the marine diatom genus Chaetoceros. They were studied by examining samples from DSDP Sites 436, 438 (northwest Pacific) and 338 (Norwegian Sea), and the Newport Beach Section (California). The genus Xanthioisthmus is characterized by an elongate valve composed of two flat circles joined together by a hyaline broad isthmus and includes five species: X. biscoctiformis (Forti) Suto comb. nov., X. specticularis (Hanna) Suto comb. nov., X. panduraeformis (Pantocsek) Suto comb. nov., X. praemaculata sp. nov. and X. maculata (Hanna) Suto comb. nov. The genus Quadrocistella differs from Xanthioisthmus by its elongate and rectangular valve and bears five new species: Q. rectagonuma sp. nov., Q. tubera sp. nov., Q. paliesa sp. nov., Q. montana sp. nov. and Q. palmesa sp. nov.

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.

Intra-seasonal and inter-annual patterns in the demographics of sand lance and response to environmental drivers in the North Pacific

2019 ◽  
Vol 617-618 ◽  
pp. 221-244 ◽  
Author(s):  
MR Baker ◽  
ME Matta ◽  
M Beaulieu ◽  
N Paris ◽  
S Huber ◽  
...  
Keyword(s):  
North Pacific ◽  
Environmental Drivers ◽  
Sand Lance ◽  
The North ◽  
The North Pacific ◽  
Annual Patterns
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