Plausible Evolutionary Chains for Educational Use

Hi Equinox,Here's a trilobite phylogeny from Paul Selden's (U Kansan) lecture notes - I think what you want to be looking at here is the number of ribs evolving along each branch. MickEdited by Admin, : No reason given.

And here's one showing the necessary evolutionary modifications leading from dinosaurs to birds. Unfortunately the pictures are a bit blocky and the species aren't named - but it might be possible for somebody who knows about dinosaurs to label some of the species. Link to sourcemickEdited by mick, : No reason given.