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Light microscope and scanning electron microscope analysis of identical specimens of small "Tertiary newcomer coccoliths"; application of a modified technique

Hartmut Mai
Light microscope and scanning electron microscope analysis of identical specimens of small "Tertiary newcomer coccoliths"; application of a modified technique
Micropaleontology (2000) 46 (3): 277-283

Abstract

The same specimens of Neobiscutum romeinii, Neobiscutum parvulum and Cruciplacolithus primus, with an average size of 2.0 mu m and deriving from the "type locality" of the Maastrichtian stage at ENCI quarry near Maastricht, The Netherlands, were documented both under the light microscope (LM) and the scanning electron microscope (SEM). The SEM micrographs with magnifications between 20K and 40K allow a precise recognition of all taxonomically relevant data. The LM illustrations, on the other hand, show little specks in most cases which do not always allow a correct classification. The limit of useful and accurate LM analysis is given by coccolith specimens with sizes over 2.5 mu m. It is therefore necessary to use a SEM when researching smaller coccoliths. The variation of small Neobiscutum and Cruciplacolithus species is relatively high and the existing taxonomic classification seems still doubtful. A modified technique for SEM/LM same-specimen-interchange was applied in order to perform successful microscopy.


ISSN: 0026-2803
Coden: MCPLAI
Serial Title: Micropaleontology
Serial Volume: 46
Serial Issue: 3
Title: Light microscope and scanning electron microscope analysis of identical specimens of small "Tertiary newcomer coccoliths"; application of a modified technique
Author(s): Mai, Hartmut
Affiliation: Universitaet Bremen, Fachbereich Geowissenschaften, Bremen, Federal Republic of Germany
Pages: 277-283
Published: 2000
Text Language: English
Publisher: American Museum of Natural History, New York, NY, United States
References: 4
Accession Number: 2003-041818
Categories: Paleobotany
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: 5 plates
N50°51'00" - N50°51'00", E05°42'00" - E05°42'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2018, American Geosciences Institute.
Update Code: 200313
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