Science and Technology 科学技术 Palaeontology 古生物学 Splay-footed, not flat-footed 八字足，而非平足 A new fossil shows that evolution does not always mean change 一个新的化石表明：进化并不总是意味着改变 Then and...
Science and technology 科学与技术 Splay-footed, not flat-footed 不是扁平足而是八字足 A new fossil shows that evolution does not always mean change 新发现的化石显示，进化并不总意味着变化 Palaeontology 古生物学 The...
