Tra từ Devonian period - Từ điển WordNet v3.1

Từ điển WordNet v3.1 - WordNet Dictionary

Devonian period

noun

from 405 million to 345 million years ago;
preponderance of fishes and appearance of amphibians and ammonites
• Syn:
Devonian, Age of Fishes
• Instance Hypernyms:
period, geological period
• Part Holonyms:
Paleozoic, Paleozoic era