Results 111 to 120 of about 34,987 (228)

An updated mammal biochronology and biogeography for the paleocene and early eocene of Asia [PDF]

open access: yes, 2009
Paleomammalogists often use a biochronological system of regional Land Mammal Ages (LMAs) to designate intervals of time defined by specific events in the evolutionary history of mammals.
Missiaen, Pieter, Smith, Thierry
core  

Plant microfossil record of the terminal Cretaceous event in the western United States and Canada [PDF]

open access: yes
Plant microfossils, principally pollen grains and spores produced by land plants, provide an excellent record of the terminal Cretaceous event in nonmarine environments.
Fleming, R. F., Nichols, D. J.
core   +1 more source

Patterns of megafloral change across the Cretaceous-Tertiary boundary in the Northern Great Plains and Rocky Mountains [PDF]

open access: yes
The spatial and temporal distribution of vegetation in the terminal Cretaceous of Western Interior North America was a complex mosaic resulting from the interaction of factors including a shifting coastline, tectonic activity, a mild, possibly ...
Hickey, Leo J., Johnson, Kirk R.
core   +1 more source

Recalibration of the Tethyan shallow-benthic zonation across the Paleocene-Eocene boundary: the Egyptian record

open access: yesGeologica Acta, 2009
The Galala Mountains in Egypt provide an excellent platform-basin transect with deposits spanning the Paleocene/ Eocene (P/E) boundary. These interfingering deposits enable a recalibration between platform and open marine biostratigraphic schemes.
C. SCHEIBNER, R.P. SPEIJER
doaj  

An extended Cretaceous-Tertiary (K/T) stable isotope record. Implications for paleoclimate and the nature of the K/T boundary event [PDF]

open access: yes
In order to obtain a detailed single site record of marine productivity and temperature across the Cretaceous-Tertiary (K/T) boundary, both delta C-13 and delta O-18 values were measured in paired surface and deep water microfossil and nannofossil ...
Dhondt, Steven
core   +1 more source

Origin of Umm Al Heesh lake in the Rub' Al Khali desert, Saudi Arabia. [PDF]

open access: yesSci Rep
Kazak ES   +4 more
europepmc   +1 more source

Widespread terrestrial ecosystem disruption at the onset of the Paleocene-Eocene Thermal Maximum. [PDF]

open access: yesProc Natl Acad Sci U S A
Nelissen M   +7 more
europepmc   +1 more source

Evaluation of existing knowledge of the tectonic history and lithospheric structure of South America [PDF]

open access: yes
While data is available on the lithospheric and crustal structure of the Andes region of South America, there is limited knowledge of these aspects of the eastern portion of the continent.
Keller, G. R., Lidiak, E. G.
core   +1 more source

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