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From 2,500 to 544 million years ago
Answer for the clue "From 2,500 to 544 million years ago ", 11 letters:
proterozoic
Alternative clues for the word proterozoic
Word definitions for proterozoic in dictionaries
WordNet
Word definitions in WordNet
adj. formed in the later of two divisions of the Precambrian era; "proterozoic life forms"
Douglas Harper's Etymology Dictionary
Word definitions in Douglas Harper's Etymology Dictionary
1880, from protero- + zoic .
Wikipedia
Word definitions in Wikipedia
The Proterozoic is a geological eon representing the time just before the proliferation of complex life on Earth . The name Proterozoic comes from Greek and means "earlier life",the Greek root protero-,means "former, earlier" and zoic-,means "animal, living ...
Usage examples of proterozoic.
Others divide the Precambrian into two eras, the very ancient Archean and the more recent Proterozoic.
Proterozoic Era and, before that, the Archeozoic Era, each estimated to have been 650 million years in duration.