carmen lopez
More ideas from carmen
Origin of Dinosaurs – Updated

Earlier we looked at the origin of dinosaurs. Here is an update. Notably absent here are Lagerpeton, phytosaurs and pterosaurs -- because they don't belong.

Prehistoric Fish

Before you call me an idiot, just tell me how many scientists can say in general terms which fish evolved into a reptile, which reptile evolved into a mammal, and which one evolved into "our" common ancestor?