Meaning Of The Word Proterozoic

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  2. P Words Definitions
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  4. Proterozoic

What's the definition of Proterozoic? Find Proterozoic meanings, definitions and more at the Real Dictionary online.

Proterozoic Meaning

Proterozoic Definition
Proterozoic Definition

What's The Definition Of Proterozoic?

Proterozoic in American English
designating or of the geologic eon characterized by the development of sedimentary rock, shallow seas, and the first soft-bodied, marine invertebrates; Precambrian, esp. late Precambrian
adjective: noting or pertaining to the latter half of the Precambrian Era, from about 2.5 billion to 570 million years ago, characterized by the appearance of bacteria and marine algae; Algonkian
noun: the Proterozoic division of geologic time or the rock systems formed then; Algonkian

Proterozoic in British English
noun: the later of two divisions of the Precambrian era, during which the earliest plants and animals are assumed to have lived

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