ON THE SO-CALLED DANIAN s. I. OR DANO-MONTIAN OF AUTHORS

A b s t r a c t The expansion of the term Danian to include the Montian as its upper substage in a Danian s.l., a Montian s.l., or a Dano-Montian stage is unwarranted and does not conform with the original definitions af these terms. The Montian, as originally defined by DEWALQUE (1868), is proved t...

Full description

Bibliographic Details
Main Author: Z. R. El-naggar
Other Authors: The Pennsylvania State University CiteSeerX Archives
Format: Text
Language:English
Subjects:
Planktonic foraminifera
Online Access:http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.525.3909
http://2dgf.dk/xpdf/bull17-01-103-111.pdf
id ftciteseerx:oai:CiteSeerX.psu:10.1.1.525.3909
record_format openpolar
spelling ftciteseerx:oai:CiteSeerX.psu:10.1.1.525.3909 2023-05-15T18:00:49+02:00 ON THE SO-CALLED DANIAN s. I. OR DANO-MONTIAN OF AUTHORS Z. R. El-naggar The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.525.3909 http://2dgf.dk/xpdf/bull17-01-103-111.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.525.3909 http://2dgf.dk/xpdf/bull17-01-103-111.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://2dgf.dk/xpdf/bull17-01-103-111.pdf text ftciteseerx 2016-01-08T10:20:02Z A b s t r a c t The expansion of the term Danian to include the Montian as its upper substage in a Danian s.l., a Montian s.l., or a Dano-Montian stage is unwarranted and does not conform with the original definitions af these terms. The Montian, as originally defined by DEWALQUE (1868), is proved to be a junior synonym of the Heersian (DUMONT, 1851), and planktonic Foraminifera in the latter stage represent a particular evolutionary stage in the development of this group which necessitates its separate treatment. DISCUSSION The prolonged controversy surrounding the stratigraphical position of the Danian has been almost settled by its assignment to the base of the Tertiary system, as the oldest stage of the Paleocene series (see discussion by the present writer 1963, 1966 and by BERGGREN 1962, 1964). Never-theless, the upper boundary of this stage is still much disputed, differently interpreted and difficult to decide. The difficulty has been mainly ex- Text Planktonic foraminifera Unknown
institution Open Polar
collection Unknown
op_collection_id ftciteseerx
language English
description A b s t r a c t The expansion of the term Danian to include the Montian as its upper substage in a Danian s.l., a Montian s.l., or a Dano-Montian stage is unwarranted and does not conform with the original definitions af these terms. The Montian, as originally defined by DEWALQUE (1868), is proved to be a junior synonym of the Heersian (DUMONT, 1851), and planktonic Foraminifera in the latter stage represent a particular evolutionary stage in the development of this group which necessitates its separate treatment. DISCUSSION The prolonged controversy surrounding the stratigraphical position of the Danian has been almost settled by its assignment to the base of the Tertiary system, as the oldest stage of the Paleocene series (see discussion by the present writer 1963, 1966 and by BERGGREN 1962, 1964). Never-theless, the upper boundary of this stage is still much disputed, differently interpreted and difficult to decide. The difficulty has been mainly ex-
author2 The Pennsylvania State University CiteSeerX Archives
format Text
author Z. R. El-naggar
spellingShingle Z. R. El-naggar
ON THE SO-CALLED DANIAN s. I. OR DANO-MONTIAN OF AUTHORS
author_facet Z. R. El-naggar
author_sort Z. R. El-naggar
title ON THE SO-CALLED DANIAN s. I. OR DANO-MONTIAN OF AUTHORS
title_short ON THE SO-CALLED DANIAN s. I. OR DANO-MONTIAN OF AUTHORS
title_full ON THE SO-CALLED DANIAN s. I. OR DANO-MONTIAN OF AUTHORS
title_fullStr ON THE SO-CALLED DANIAN s. I. OR DANO-MONTIAN OF AUTHORS
title_full_unstemmed ON THE SO-CALLED DANIAN s. I. OR DANO-MONTIAN OF AUTHORS
title_sort on the so-called danian s. i. or dano-montian of authors
url http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.525.3909
http://2dgf.dk/xpdf/bull17-01-103-111.pdf
genre Planktonic foraminifera
genre_facet Planktonic foraminifera
op_source http://2dgf.dk/xpdf/bull17-01-103-111.pdf
op_relation http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.525.3909
http://2dgf.dk/xpdf/bull17-01-103-111.pdf
op_rights Metadata may be used without restrictions as long as the oai identifier remains attached to it.
_version_ 1766170073903398912

Similar Items