First Son needed some help with the first one but then he took off and handled them all on his own (other than tearing out the page from the book). First he did all the black and white ones, coloring them in before putting them together. He says those are the males. Then he put all the colored ones together, the females of course. He says the males are very excited to have their mates.
The dinosaurs in the book are the popular ones: allosaurus, ankylosaurus, tyrannosaurus, etc. There are some cards at the front of the book that give basic information on the included dinosaurs: size, diet, where fossils were found, and so on. I didn't see anything specifically about evolution in the descriptions. First Son pretty much skipped over those, probably because the dinosaurs themselves were so inviting.
These pictures are from about a month ago, by the way. I will catch up eventually.