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Definitions and Synonyms of geological period | Another word for geological period | What is geological period?

Definition 1: a unit of geological time during which a system of rocks formed - [noun denoting time]

Samples where geological period or its synonyms are used according to this definition

  • ganoid fishes swarmed during the earlier geological periods

Synonyms for geological period in the sense of this definition

(geological period is a kind of ...) the time of the physical formation and development of the earth (especially prior to human history)

(... is a kind of geological period ) any period of time during which glaciers covered a large part of the earth's surface

"the most recent ice age was during the Pleistocene"

(... is an instance of geological period) from 63 million to 2 million years ago

(... is an instance of geological period) from 544 million to about 500 million years ago; marine invertebrates

(... is an instance of geological period) from 500 million to 425 million years ago; conodonts and ostracods and algae and seaweeds

(... is an instance of geological period) from 425 million to 405 million years ago; first air-breathing animals

(... is an instance of geological period) from 405 million to 345 million years ago; preponderance of fishes and appearance of amphibians and ammonites

(... is an instance of geological period) from 345 million to 310 million years ago; increase of land areas; primitive ammonites; winged insects

(... is an instance of geological period) last 2 million years

(... is an instance of geological period) from 345 million to 280 million years ago

(... is an instance of geological period) from 280 million to 230 million years ago; reptiles

(... is an instance of geological period) from 230 million to 190 million years ago; dinosaurs, marine reptiles; volcanic activity

(... is an instance of geological period) from 190 million to 135 million years ago; dinosaurs; conifers

(... is an instance of geological period) from 135 million to 63 million years ago; end of the age of reptiles; appearance of modern insects and flowering plants

(... is an instance of geological period) from 310 million to 280 million years ago; warm climate; swampy land

(geological period is a part of ...) a unit of geological time that is a subdivision of a period and is itself divided into ages

(... is part of geological period) a major division of geological time; an era is usually divided into two or more periods

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