Sökning: "microfossils"
Visar resultat 1 - 5 av 23 avhandlingar innehållade ordet microfossils.
1. Microfossils of eukaryotic cysts through time : A study of Precambrian-Ordovician organic-walled microbiota
Sammanfattning : .... LÄS MER
2. Quantitative analysis of microfossils : a methodological study with applications to radiolaria
Sammanfattning : .... LÄS MER
3. Fossilized microorganisms in volcanic rocks from sub-seafloor environments
Sammanfattning : Fossilized microorganisms are focused in this thesis. Such organisms have been observed in drilled basalt samples from the Emperor Seamounts in the Pacific Ocean collected during ODP (Ocean Drilling Program) Leg 197. LÄS MER
4. Palaeobiology and diversification of Proterozoic-Cambrian photosynthetic eukaryotes
Sammanfattning : One of the most important events in the history of life is the evolution of the complex, eukaryotic cell. The eukaryotes are complex organisms with membrane-bound intracellular structures, and they include a variety of both single-celled and multicellular organisms: plants, animals, fungi and various protists. LÄS MER
5. The Ediacaran Diversification of Organic-walled Microbiota : Ocean Life 600 Million Years Ago
Sammanfattning : The only direct evidence of past life is provided by fossils. Fossils tell us about the evolution of life on Earth and they give us clues concerning ancient environments. The Ediacaran Period (roughly 635-542 million years ago) is characterised by the appearance and diversification of various microbiota and also the diversification of metazoans. LÄS MER