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