proterozoic

Speech parts

1. proterozoic - Noun

2. proterozoic - Adjective

3. proterozoic - Adjective Satellite

4. Proterozoic - Proper noun

Meaning

from 2,500 to 544 million years ago; bacteria and fungi; primitive multicellular organisms

formed in the later of two divisions of the Precambrian era

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Antonyms

Examples

proterozoic life forms Source: Internet

Laurentia is an ancient craton which forms the geologic core of North America; it formed between 1.5 and 1.0 billion years ago during the Proterozoic eon. citation The Canadian Shield is the largest exposure of this craton. Source: Internet

Geologically, the Lake Ladoga depression is a graben and syncline structure of Proterozoic age ( Precambrian ). Source: Internet

As the Proterozoic Eon drew to a close, the Earth started to warm up. Source: Internet

Tectonic history (Supercontinents) Evidence of collision and rifting between continents raises questions as to what exactly the movements of the Archean cratons composing Proterozoic continents were. Source: Internet

Earth's deep time in the Proterozoic and deeper still in the Archean is only "recounted by microscopic fossils and subtle chemical signals." Source: Internet

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