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Palynostratigraphy of the cretaceous-paleogene mass-extinction interval of the Northern Hemisphere

Bercovici, Antoine LU ; Vajda, Vivi LU and Sweet, Arthur (2012) In Dìcéngxué zázhì 36(2). p.165-178
Abstract
For a long time debate has taken place regarding the trends and extinction rates associated with the Cretaceous-

Paleogene (K-Pg) mass extinction event on land. While mainly focussed on vertebrates and more especially

non-avian dinosaurs, the dynamics of the plant cover remains nonetheless a major component for the understanding the

biological response across the K-Pg interval and associated ecosystem destabilization. In this paper, we present a review

of the late Cretaceous to Paleogene pollen and spore stratigraphy within the Northern Hemisphere Aquilapollenites paleophytogeographic

province. In the United States of America, Late Cretaceous assemblages are marked by the appearance

of... (More)
For a long time debate has taken place regarding the trends and extinction rates associated with the Cretaceous-

Paleogene (K-Pg) mass extinction event on land. While mainly focussed on vertebrates and more especially

non-avian dinosaurs, the dynamics of the plant cover remains nonetheless a major component for the understanding the

biological response across the K-Pg interval and associated ecosystem destabilization. In this paper, we present a review

of the late Cretaceous to Paleogene pollen and spore stratigraphy within the Northern Hemisphere Aquilapollenites paleophytogeographic

province. In the United States of America, Late Cretaceous assemblages are marked by the appearance

of a series of key-taxa, the Santonian-Campanian transition is characterized by the appearance of Aquilapollenites

and associated triprojectate genera, while the base of the Maastrichtian is marked by the appearance of the oculate genus

Wodehouseia as well as Kurtzipites sp. The K-Pg extinction event remains easily identifiable in the palynological record

with the disappearance of a series of angiospermous taxa part of the Wodehouseia spinata Assemblage Zone, which are

characterized by relatively large size and complex wall structure. The recovery palynoflora in the Paleocene is represented

by assemblages dominated by porate grains, with key-species from the Momipites and Caryapollenites genera. As current data covers mostly the North American terrestrial record, more research efforts are needed within Chinese,European and Southern Hemisphere localities to provide for a better understanding of the global response of the terrestrialbiosphere to the K-Pg impact event. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
spores, pollen, palynology, paleogene, biostratigraphy, cretaceous, mass-extinction
in
Dìcéngxué zázhì
volume
36
issue
2
pages
165 - 178
publisher
Quánguó dìcéng wĕiyuánhuì : Acta stratigraphica Sinica
ISSN
0253-4959
language
English
LU publication?
yes
id
a5bb1a0e-7639-4c26-864c-2fabb8c8c99b (old id 4281217)
date added to LUP
2014-02-03 12:04:31
date last changed
2016-04-16 00:22:40
@article{a5bb1a0e-7639-4c26-864c-2fabb8c8c99b,
  abstract     = {For a long time debate has taken place regarding the trends and extinction rates associated with the Cretaceous-<br/><br>
Paleogene (K-Pg) mass extinction event on land. While mainly focussed on vertebrates and more especially<br/><br>
non-avian dinosaurs, the dynamics of the plant cover remains nonetheless a major component for the understanding the<br/><br>
biological response across the K-Pg interval and associated ecosystem destabilization. In this paper, we present a review<br/><br>
of the late Cretaceous to Paleogene pollen and spore stratigraphy within the Northern Hemisphere Aquilapollenites paleophytogeographic<br/><br>
province. In the United States of America, Late Cretaceous assemblages are marked by the appearance<br/><br>
of a series of key-taxa, the Santonian-Campanian transition is characterized by the appearance of Aquilapollenites<br/><br>
and associated triprojectate genera, while the base of the Maastrichtian is marked by the appearance of the oculate genus<br/><br>
Wodehouseia as well as Kurtzipites sp. The K-Pg extinction event remains easily identifiable in the palynological record<br/><br>
with the disappearance of a series of angiospermous taxa part of the Wodehouseia spinata Assemblage Zone, which are<br/><br>
characterized by relatively large size and complex wall structure. The recovery palynoflora in the Paleocene is represented<br/><br>
by assemblages dominated by porate grains, with key-species from the Momipites and Caryapollenites genera. As current data covers mostly the North American terrestrial record, more research efforts are needed within Chinese,European and Southern Hemisphere localities to provide for a better understanding of the global response of the terrestrialbiosphere to the K-Pg impact event.},
  author       = {Bercovici, Antoine and Vajda, Vivi and Sweet, Arthur},
  issn         = {0253-4959},
  keyword      = {spores,pollen,palynology,paleogene,biostratigraphy,cretaceous,mass-extinction},
  language     = {eng},
  number       = {2},
  pages        = {165--178},
  publisher    = {Quánguó dìcéng wĕiyuánhuì : Acta stratigraphica Sinica},
  series       = {Dìcéngxué zázhì},
  title        = {Palynostratigraphy of the cretaceous-paleogene mass-extinction interval of the Northern Hemisphere},
  volume       = {36},
  year         = {2012},
}