The geologic time scale is a system of chronological measurement that relates stratigraphy to time, and is used by scientists to describe the timing and relationships between events that have occurred throughout Earth's history.
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Important Points - Geological Time scale
Important Points - Geological Time scale
- Cambrian, Permian, Triassic, Cretaceous
- Devonian- Carboniferous-Cretaceous- Eocene
- Palaeozoic —> Mesozoic —> Coenozoic
- The period which marks the first appearance of trilobites is Cambrian.
- Cultural evolution of man occurred in
the Quaternary period of Cenozoic era
- The only animals of dinosaur lineage to survive the Cretaceous–Paleocene
extinction event are Aves.
- Dinosaurs became completely extinct in Oligocene epoch
- Coenozoic era : Angiosperms continued to diversity
- Aves is
considered as a direct descendent of dinosaurs.
- In geological time scale which time periods is
known as the age of gymnosperms:
Triassic and Jurassic
- Humans originated in the epoch known as Pleistocene
