The potential evolutionary link between hairs in mammals, feathers in birds and scales in reptiles has been debated for decades. (sciencedaily.com)
Dinosaur Egg Study Supports Evolutionary Link Between Birds and Dinosaurs: How Troodon Likely Hatched Its Young (religion.blogs.cnn.com)
So I started going to Norm's lab meetings mostly out of my interest in understanding how to reconstruct large phylogenetic trees,» says Knight, referring to charts that depict evolutionary links between species. (vilcek.org)