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phanerozoic eon

 

Definitions from WordNet

Noun phanerozoic eon has 1 sense
  1. Phanerozoic, Phanerozoic eon, Phanerozoic aeon - the period from about 5,400 million years ago until the present
    --1 is a kind of eon, aeon
    --1 has parts: Cenozoic, Cenozoic era, Age of Mammals

Definitions from the Web

Phanerozoic Eon

Noun: The Phanerozoic Eon is the current geologic eon, spanning approximately 541 million years ago to the present, and characterized by a wide diversity of complex life forms.

Sample Sentence: The Phanerozoic Eon is divided into three eras: the Paleozoic, Mesozoic, and Cenozoic.

Adjective: Referring to or characteristic of the Phanerozoic Eon.

Sample Sentence: The Phanerozoic fossils provide evidence of the evolution of various species over time.

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