劍橋詞典from or referring to the period of time between about 420 and 360 million years ago, in which many plants , including the first trees , appeared on land 泥盆紀(jì)（或系）的 the Devonian period 泥盆紀(jì) Devonian rocks 泥盆紀(jì)巖石 the Devonian noun [ 單數(shù)名詞 ] the Devonian period 泥盆紀(jì) 返回 Devonian