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Re: Amphibians - the comeback kings of evolution

T. Michael Keesey writes:


Is that a right use of term "common"? 

It's confusing, but I'm pretty sure they mean "common" respectively,
i.e., an ancestor common to all frogs and toads, an ancestor common to
all salamanders, and an ancestor common to all caecilians. Not three
ancestors common to all three extant groups. Poor wording, it seems to
me.

Or maybe the three ancestors common to extant amphibians as a whole group.

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Dann Pigdon
GIS / Archaeologist         http://www.geocities.com/dannsdinosaurs
Melbourne, Australia        http://heretichides.soffiles.com
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