白垩世 / 白堊世

bái'è​shì

Cretaceous

Cretaceous, the geological period between approximately 145 and 66 million years ago

白垩 (literal) → 白垩/白堊 · bái'è · chalk 世 (bound) → 世 · shì · era

Changed: simplified, traditional, gloss, definition, pinyin, variant pinyin, variants, separable parts, decomposition

created sense May 20, 2026, 07:58 PM