A 无脊椎动物错 已经identify 它是最原始的脊椎动物了
B 牙齿由外壳进化而来(观点1),错 观点2先有牙齿 再有外壳
C 出现在观点1 错
D 用armor定位
(1)Teeth were more primitive than external armor according to this view, 定位观点2 第二段最后一句
(2) apart from the elements in the mouth indicates that conodonts were more primitive than the armored jawless fishes such as the ostracoderms. 定位结论段中间
解剖学证据anatomical evidence =The stiffening not ochord along the back of the body, V-shaped muscle blocks along the sides, and posterior tail fins help to【identify conodonts as among the most primitive of vertebrates.】
如果从平行角度,melting不能和名词平行啊