Results 181 to 190 of about 42,104 (227)

Revised taxonomy and stratigraphy of Middle Miocene calcareous nannofossils of the Paratethys

Micropaleontology, 2012
The taxonomy of Paratethyan Middle Miocene calcareous nannofossils is reviewed and revised. Two new species, Syracosphaera croatica and Syracosphaera horvati, are proposed. Comparative study of coeval Neogene nannofossils from NHM and ODP (Ocean Drilling Project) reference collections give differences and similarities between the investigated areas ...
Galović, Ines, Young, Jeremy
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Evolutionary trends of tropical calcareous nannofossils in the late Neogene

Marine Micropaleontology, 1998
Abstract Examination of Middle–Late Miocene sediments recovered during ODP Leg 154 in western equatorial Atlantic has led to identification of evolutionary transitions in some groups of late Neogene calcareous nannofossils. Through analyses of high resolution samples (10-cm sample interval equivalent to average interval of 6 kyr) we were able to ...
RAFFI, Isabella, BACKMAN J., RIO D.
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Calcareous nannofossil biostratigraphy of the California margin

2000
Selected calcareous nannofossils were investigated by means of quantitative and semiquantitative methods in middle Miocene to Pleistocene sediments from the California margin (Pacific Ocean) recovered during Ocean Drilling Program Leg 167. The goal of the work was to provide detailed dating and correlations of the successions recovered that span a wide
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Calcareous Nannofossil Biostratigraphy

2021
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Effects of Ultrasonic Pressure on Calcareous Nannofossils

Geology, 1973
Ultrasonic cleaning is a valuable method of extracting delicate calcareous nannofossils from their matrices, but too much sonic energy can damage or even destroy the specimen. A quantitative assessment is made of the most appropriate amounts of ultrasonic pressure necessary to disaggregate the microfossil from the remaining sample and free it of ...
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Reliability of calcareous nannofossil events in the Tithonian–early Berriasian time interval: Implications for a revised high resolution zonation

Cretaceous Research, 2021
Elisabetta Erba, Cristina Emanuela Casellato   +1 more
exaly  

Implications of calcareous nannofossil biostratigraphy, biochronology, paleoecology, and sequence stratigraphy of the Paleocene-Eocene of the Wadi Qena, Egypt

Journal of African Earth Sciences, 2022
Medhat Mandur, Abdel Galil A Hewaidy
exaly  

Higher classification of calcareous nannofossils.

Journal of Nannoplankton Research, 1997
J. R. Young, P. R. Bown
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Volume calculation of Cretaceous calcareous nannofossils.

Journal of Nannoplankton Research, 2002
F. Tremolada, J. R. Young
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Microfossils: Calcareous Nannoplankton (Nannofossils)

2017
Sudeep Kanungo, Jeremy Young, Gosia Skowron   +2 more
openaire   +1 more source