Both of these fossils suggest such transitions are not smooth, simultaneous transformations of all bodily features from old to new.
所有这些化石都提示这样的过度并不是平滑的,身体各个特点从新到旧几乎同时的转变。
2
A key discovery was that if the inside of the mask is smooth - even if the outside is bumpy with pores, a nose and other features - it will stretch over most faces and move with facial muscles.