Read Edit View history 渐新世 jiànxīnshì Oligocene Origin Definitions Defs Strokes Stroke Words Sentences Sents 渐新世 漸新世 jiànxīnshì Oligocene Oligocene epoch, a geological period spanning from approximately 34 to 23 million years ago Frequency Written text 0.026 per million Sources Frequency data BCC Corpus (BLCU)
渐新世 漸新世 jiànxīnshì Oligocene Oligocene epoch, a geological period spanning from approximately 34 to 23 million years ago Frequency Written text 0.026 per million Sources Frequency data BCC Corpus (BLCU)