Results 151 to 160 of about 3,600 (212)

A transient peak in marine sulfate after the 635-Ma snowball Earth. [PDF]

open access: yesProc Natl Acad Sci U S A, 2022
Peng Y   +7 more
europepmc   +1 more source

Proterozoic acritarchs and divergences of green microalgae

open access: yes, 2010
The morphology of microfossils with resistant cell walls, their ornamentation and functionally identifiable structures are the first source of information used to assess their biological affinities. Difficulties in relying on morphology alone due to the problem of convergent morphology may be resolved by the ultrastructure of the cell wall and its ...
openaire   +1 more source

Advances in Ediacaran biostratigraphy in Australia

open access: yesCarnets de Géologie, 2007
Grey Kathleen
doaj  

Supernova triggers for end-Devonian extinctions. [PDF]

open access: yesProc Natl Acad Sci U S A, 2020
Fields BD   +8 more
europepmc   +1 more source

Scientific Integrity, Precambrian Acritarchs from Brazil and Mangroves and Climate Change

open access: yesAnais da Academia Brasileira de Ciências, 2015
Alexander W. A. Kellner
doaj   +1 more source

The southwesternmost record of late Silurian (Pridolian) early land plants of Gondwana. [PDF]

open access: yesSci Rep
Drovandi JM   +9 more
europepmc   +1 more source

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