Results 81 to 90 of about 1,147 (200)

Acritarch-like Microorganisms from the 1.9 Ga Gunflint Chert, Canada. [PDF]

Astrobiology, 2022
González-Flores AL, Jin J, Osinski GR, Tsujita CJ.   +3 more
europepmc   +1 more source

New acritarch taxa from the Middle and Upper Devonian (Givetian–Frasnian) of western Canada

, 1991
Eight new acritarch species, four of which are assigned to new genera, are described from Givetian and Frasnian strata of Alberta and the Northwest Territories. The new taxa are Apectosphaeridium apoplanium n.gen. et sp., Asyncosmium isum n.gen. et sp.,
Robert E. Turner
core   +1 more source

PALYNOSTRATIGRAPHY AND PACAIEOGEOGRAPHY OF EARLY PEFIMM STRATA IN THE ZAGROS BASIN, SOUTHEAST SOUTHWEST IRAN [PDF]

Journal of Sciences, Islamic Republic of Iran, 1997
A totall of 500 Early Permian samples from the Chal-i-Sheh Formation in the Zagros Basin were examined palynollogically in order to determine the stratigraphical age of the formation and to assess the palaeogeopaphicd relatianships of this basin to the ...
doaj  

Late Permian to Early Triassic changes in acritarch assemblages and morphology in the Boreal Arctic: New data from the Finnmark Platform

, 2018
The Late Permian extinction interval is in many marine locations characterized by the development of anoxic conditions. The Finnmark Platform is one of few exceptions, as sedimentological and palynofacies evidence indicate oxygenated conditions ...
Kürschner, Wolfram Michael, Wolfram M. Kürschner, van Soelen, Elsbeth Ester, Elsbeth E. van Soelen   +3 more
core   +1 more source

The Jurassic of Denmark and Greenland: Palynostratigraphy and palaeoenvironment of the Middle Jurassic Sortehat Formation (Neill Klinter Group), Jameson Land, East Greenland [PDF]

Geological Survey of Denmark and Greenland Bulletin, 2003
The grey–black mudstones of the Sortehat Formation form part of the Middle Jurassic fill of the Jameson Land Basin in East Greenland. The formation is exposed in the southernmost part of the north–south-trending, Mesozoic rift system in East Greenland ...
Koppelhus, Eva B., Hansen, Carina F.
doaj  

Ediacaran acritarch biota from the Giles 1 drillhole, Officer Basin, Australia, and its potential for biostratigraphic correlation

, 2008
The remarkable diversification of single-celled photosynthesising biota of algal and other as yet unknown affinities (acritarchs), followed by the diversification of metazoans, occurred during the Ediacaran Period, which is marked by extreme climatic and
Willman, Sebastian,, Moczydłowska, Małgorzata,   +1 more
core   +1 more source

PALYNOLOGICAL STUDY OF PALEOZOIC SEDIMENTS OF THE CHAL-I-SHEH AREA, SOUTHWESTERN IRAN [PDF]

Journal of Sciences, Islamic Republic of Iran, 1993
The Paleozoic sediments of the Chal-i-Sheh area in southwestern Iran comprising of Mila Formation, Ilebek Formation and Faraghan Formation, were studied palynologically. The samples containing well-preserved palynomorphs include acritarchs, chitinozoans,
doaj  

The Lower Palaeozoic acritarchs Priscogalea and Cymatiogalea

, 1974
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +1 more source

Ediacaran complex acanthomorphic acritarch assemblage from the Owk Shale of the Kurnool Group: Morphological insights through Confocal Laser Scanning Microscope

Journal of the Palaeontological Society of India
The Organic-Walled Microfossils (OWM), especially acritarchs, are essential in understanding eukaryotes’ early evolution and diversification in the Proterozoic Era.
YOGESH KUMAR, MUKUND SHARMA, SHREERUP GOSWAMI, VEERU KANT SINGH   +3 more
doaj   +1 more source

Paleoceanography and dinoflagellate cyst stratigraphy across the Lower-Middle Pleistocene Subseries (Calabrian-Chibanian Stage) boundary at the Chiba composite section, Japan. [PDF]

Prog Earth Planet Sci, 2021
Balota EJ, Head MJ, Okada M, Suganuma Y, Haneda Y.   +4 more
europepmc   +1 more source