Results 41 to 50 of about 98,208 (293)

A new pterosaur (Pterodactyloidea: Azhdarchidae) from the Upper Cretaceous of Morocco [PDF]

open access: yes, 2010
The Kem Kem beds in South Eastern Morocco contain a rich early Upper (or possibly late Lower) Cretaceous vertebrate assemblage. Fragmentary remains, predominantly teeth and jaw tips, represent several kinds of pterosaur although only one species, the ...
David M Unwin   +19 more
core   +1 more source

Burmese amber fossils bridge the gap in the Cretaceous record of polypod ferns [PDF]

open access: yes, 2016
publisher: Elsevier articletitle: Burmese amber fossils bridge the gap in the Cretaceous record of polypod ferns journaltitle: Perspectives in Plant Ecology, Evolution and Systematics articlelink: http://dx.doi.org/10.1016/j.ppees.2016.01.003 ...
Heinrichs, Jochen   +4 more
core   +1 more source

Calcareous nannofossils bioevent throughout the Cretaceous -Tertiary boundary in kh-4 well, Northern Iraq

open access: yesTikrit Journal of Pure Science, 2022
The specified systematic study of calcareous nannofossils was carried out on successions of Shiranish and Aaliji Formations. Four Samples have taken from (Kh-4) well, between (2600-2630) m, Northern Iraq. Twenty-five species were identified.
Omar Ahmed Al-Badrani   +1 more
doaj   +1 more source

Sieve-type normal pore canals in Jurassic ostracods: A review with description of a new genus [PDF]

open access: yesActa Palaeontologica Polonica, 2020
Sieve-type normal pore canals (StPC) occur commonly in living and fossil cytheroid ostracods but their biological function(s) and evolutionary history are poorly known. The new genus Minyocythere and its four species: Minyocythere macroporosa sp. nov., M.
Alan R. Lord   +2 more
doaj   +1 more source

Assessing controls on organic matter enrichments in hemipelagic marls of the Aptian-Lower Albian Blue Marls of the Vocontian Basin (France): an unexpected variability observed from multiple “organic-rich” levels

open access: yesBSGF - Earth Sciences Bulletin, 2022
The Marnes Bleues Formation from the Vocontian Basin (Southeastern France) shows many dark-colored levels, some concomitant to oceanic anoxic events OAE1a (the so-called Goguel Level) and OAE1b (the Jacob, Kilian, and, above all, Paquier levels).
Caillaud Alexis   +10 more
doaj   +1 more source

Preliminar results of paleontological salvage at Belo Monte Powerplant construction [PDF]

open access: yesBrazilian Journal of Biology, 2015
In this paper some preliminary fossil specimens are presented. They represent a collection sampled by Belo Monte’s Programa de Salvamento do Patrimônio Paleontológico (PSPP), which includes unprecedented invertebrate fauna and fossil vertebrates from ...
HZ. Tomassi   +9 more
doaj   +4 more sources

Polish Palaeobotany: 750 Million Years of Plant History as Revealed in a Century of Studies. Mesozoic Terrestrial Palynology and Flora Reconstruction

open access: yesActa Societatis Botanicorum Poloniae, 2022
Palynological studies of the Mesozoic era in Poland began in the 1950s. These investigations developed in many directions, including stratigraphy, systematics of spores and pollen grains and their botanical affinities, as well as paleoecological and ...
Jadwiga Ziaja, Anna Fijałkowska-Mader
doaj   +1 more source

Mimicry in Cretaceous Bugs [PDF]

open access: yesiScience, 2020
Mimicry is ubiquitous in nature, yet understanding its origin and evolution is complicated by the scarcity of exceptional fossils that enable behavioral inferences about extinct animals. Here we report bizarre true bugs (Hemiptera) that closely resemble beetles (Coleoptera) from mid-Cretaceous amber.
Erik Tihelka   +3 more
openaire   +4 more sources

Mid Cretaceous fossil forests of Alexander Island, Antarctica [PDF]

open access: yes, 2003
Spectacular fossil trees and shrubs are preserved within fossil soils in their original growth positions in mid Cretaceous rocks on Alexander Island, Antarctic Peninsula.
Howe, Jodie
core   +4 more sources

A reassessment of Kelmayisaurus petrolicus, a large theropod dinosaur from the Early Cretaceous of China [PDF]

open access: yes, 2012
The Early Cretaceous fossil record of large-bodied theropods from Asia is poor, hindering comparison of Asian predatory dinosaur faunas with those from other continents. One of the few large Asian theropod specimens from this interval is a partial skull (
Stephen L. Brusatte   +12 more
core   +2 more sources

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