noun
Cambrian explosion
Refers to the rapid diversification of animal life around 541 million years ago. Used in paleontology and evolutionary biology contexts.
カンブリア爆発は約5億4100万年前に起こった。
The Cambrian explosion occurred about 541 million years ago.
From English 'Cambrian explosion', combining the geological period 'Cambrian' (カンブリア) with 'explosion' (爆発).