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silurian

Synonyms of silurian Antonyms of silurian Examples of silurian Usage of silurian Parts of silurian Definition that contains silurian Words sounding like silurian Explanation of silurian

noun
from 425 million to 405 million years ago; first air-breathing animals
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silurian period

part of:
paleozoic paleozoic era

Definition that contains silurian

anaspid extinct small freshwater jawless fish usually having a heterocercal tail and an armored head; of the Silurian and Devonian
heterostracan extinct jawless fish with the anterior part of the body covered with bony plates; of the Silurian and Devonian