Re: "Common ancestor" in cladistics

[Manuel <mparrado@peoplepc.com>]

It certainly makes a heck of a lot more sense to think that they existed and we 
will never be able to identify them than to think that they existed but we'll 
never be able to find them.  It would be too much of a coincidence to find 
hundreds of fossils and not have at least one that is an ancestor of another 
one (even if that other one has not been found).

Thinking about all the possible gradations of species that must have exited 
from one ancestor to a particular descendant, the total number of dinosaur 
species to have existed must be staggering.


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