Escherichia on 07 March 2008
Did all intermediary species simply die? Or are some of them still here while the majority were simply outcompeted by there better adapted decendants? Good questions. I'm pretty sure there are still some intermediate species out there, one thing that comes to mind is ring species. It's gets kinda tricky with them because at one end of the "ring" they are still genectically compatable but at the other end they are not. One thing to remember is that the time scale on speciation is out of necessity extraordinarily large and that most speciation events are probably dead ends.
