the time from 3,800 million years to 2,500 million years ago; earth's crust formed; unicellular organisms are earliest forms of life
<noun.time>
<noun.time>
| Archaeozoic |
|
| Archaeozoic aeon |
|
| Archean |
|
| Archean aeon |
|
| Archean eon |
|
| Archeozoic |
|
| Archeozoic eon |
|
lexical pointers
derivationally related form
lexical pointers
derivationally related form
lexical pointers
derivationally related form
semantic pointers
part holonym
instance hypernym