Shiari
Blutterer
I read a blog called Pharyngula and every now and then he'll pop out a blog written about some peer reviewed biological development research. He tends to be quite caustic about other topics, but I figured this one would interest all of us. 
http://scienceblogs.com/pharyngula/2010/03/how_to_make_a_snake.php
http://scienceblogs.com/pharyngula/2010/03/how_to_make_a_snake.php