Results 171 to 180 of about 8,490 (221)

MICROFOSSILS.

The Journal of Foraminiferal Research, 1981
  +4 more sources

Electron Microfossils

Science, 1948
H M, Barton, D J, Jones
openaire   +2 more sources

Siliceous microfossils

1996
Abstract This chapter deals with siliceous microfossils. These range in size from 5-20000 µ. Preparation of samples for siliceous microfossil study generally consists of physical disaggregation of containing sediment followed by hydrogen peroxide oxidation of organic material and acetic (ethanoic) or hydrochloric acid leaching of ...
openaire   +1 more source

Microfossils as biosignatures

SPIE Proceedings, 2005
As technology advances, we have more possibilities to search for past life, looking for biosignatures in the rock record. Even when these biosignatures can be chemical compounds, the irrevocable evidence of past life would be life itself preserved as fossils.
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Microfossils

Science, 1977
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Phosphatic microfossils

1996
Abstract This chapter deals with phosphatic microfossils (those composed of calcium phosphate). These range in size from 0.1-5.0 mm. Preparation of samples for phosphatic microfossil study generally consists of the disaggregation or dissolution of the containing sediment. The safest method of disaggregation is boiling in water with added
openaire   +1 more source

Ancient Oil as a Source of Carbonaceous Matter in 1.88-Billion-Year-Old Gunflint Stromatolites and Microfossils

Astrobiology, 2021
Birger Rasmussen
exaly  

Recognition of Rare Microfossils Using Transfer Learning and Deep Residual Networks

Biology, 2023
Jian Han, Ben Niu
exaly  

Microfossils

PALAIOS, 2006
openaire   +1 more source

Out of rock: A new look at the morphological and geochemical preservation of microfossils from the 3.46 Gyr-old Strelley Pool Formation

Precambrian Research, 2020
Sylvain Bernard, Clement Jauvion, Sylvie Derenne   +2 more
exaly