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脊椎 (Chek-chui)動物 (tōng-bu̍t)是 (sī)屬 (sio̍k)佇 (tī)Vertebrata亞門 (a-mn̂g)的 (ê)脊索 (chit-soh)動物 (Chordata); 怹 (in)有 (ū)脊椎骨 (chek-chui-kut) (vertebrae) 組成 (cho͘-sêng)的龍骨 (liông-kut) (backbones),內面 (lāi-bīn)包 (pau)質髓 (chit-chhé) (spinal cord)。脊椎動物對 (tùi)5億 (ek)3千萬 (chheng-bān)年 (nî)前 (chêng)的Cambrian活物 (oa̍h-mi̍h)爆發 (po̍k-hoat) (Cambrian explosion) 開始 (khai-sí)進化 (chìn-hoà),今 (taⁿ)有近 (kīn)5萬 (bān)8千 (chheng)種 (chióng)種 (chéng),是上 (siōng)大 (toā)陣 (tīn)的脊索亞門。怹的份子 (hūn-chú)包含 (pau-hâm)濟濟 (chē-chē)咱 (lán)捌 (bat)的大型 (toā-hêng)陸地 (lio̍k-tē)動物。親像 (Chhin-chhiūⁿ)魚 (hî),兩棲類 (lióng-chhe-lūi),爬蟲 (pâ-thiông),鳥仔 (chiáu-á),飼奶 (chhī-leng)動物等等 (téng-téng)攏 (lóng)是。