Originally posted by KazetNagorra
Evolution theory doesn't predict the existence of fossils, so nothing one could possibly observe or not observe about fossils would be useful in refuting evolution. Fossils are merely a tool that can help us track the history of biological evolution on Earth, a distinction often missed by people lacking a basic understanding of what the theory entails.
Well said.
One thing evolution does predict is common ancestry although, very strictly speaking, not necessarily common ancestry for ALL species of Earth life. Although, it just so happens that there is overweening evidence for common ancestry for all known life on Earth, hypothetically, if there was evidence of at least one exception to that, that wouldn't in anyway contradict evolution one bit for it could have been that life arose independently more than once on Earth.
I find it is interesting to note just how strong the evidence for common ancestry is and includes the fact that the DNA codon set where each codon codes for a different amino acid (except the none-amino acid codons such as the stop codon ) , despite being totally arbitrary meaning there would be no biological cost of it being slightly different from what it is, is absolutely identical for all known species ( except yeast which as an extremely tiny trivial deviation from that universal codon set that is hardly noteworthy ) . Now, for that to be all a gigantic coincidence is pretty absurd! if all species do not share the same ancestor, that would beg the question of why the totally arbitrary and pointless identical codon set? why is there no known species that has a completely different codon set or at least with a codon that codes for different amino acid than what it does in other species? For all those species to share the exact same codon set by pure chance would be mathematically be a vanishingly small probability -in practical terms, completely absurd in fact!
Of course, there is a vast mountain of other evidence that proves common ancestry and even I am surprised by just how powerful and vast that proof is! here is just a tiny but impressive bit of it! :
http://www.talkorigins.org/faqs/comdesc/section2.html
"...Example 1: mammalian ear bones and reptile jaws
Example 2: pharyngeal pouches and branchial arches
Example 3: snake and whale embryos with legs
Example 4: embryonic human tail
Example 5: marsupial eggshell and caruncle ...”
( you just have to read it all yourself to see it )
also see
http://evolution.berkeley.edu/evolibrary/search/topicbrowse2.php?topic_id=46
and
http://en.wikipedia.org/wiki/Argument_from_poor_design
and that isn't even half of it!!! It is just amazingly vast!