Thesaurus
A really fast thesaurus... with lots of synonyms.
silurian period (0 synonym found)
Definition of silurian period:
(n) :
from 425 million to 405 million years ago; first air-breathing animals
Definition of silurian period:
(n) :
from 425 million to 405 million years ago; first air-breathing animals
A make the world a better place giveback project.
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