剑桥词典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（或系）的 the Devonian period 泥盆紀 Devonian rocks 泥盆紀巖石 the Devonian noun [ 單數名詞 ] the Devonian period 泥盆紀 返回 Devonian