14-07-15 One of the riddles of mammal evolution explained: the strong conservation of the number of trunk vertebrae（脊椎） . Researchers of the Naturalis Biodiversity Center and the University of Utah show that this conservation is probably due to the essen...

10-10-19 By examining the development of bones in the vertebral column（脊柱） , limbs, and ribcage（胸腔） , scientists at the University of Cambridge have discovered how sloths（树懒） evolved their unique neck skeleton. From mice to giraffes（长颈鹿） , m...