石炭紀 Save Sign in to save words Simplified: 石炭纪 shítànjì ㄕˊ ㄊㄢˋ ㄐㄧˋ Carboniferous (geological period 354-292m years ago) Character by character 石(shí)surname Shi 炭(tàn)wood charcoal 紀(jì)order A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0