As was pointed out to you back on page 21, this conception of macroevolution is useless to you. The fact that recently the serious researchers in the field seem to have demonstrated that once an equilibrium has been closely approached in a given environmentleopold said:the debate was whether the process of microevolution can be extrapolated to macroevolution.
definition of macroevolution:
http://evolution.berkeley.edu/evolib...0/evoscales_04
their conclusion was a clear no.
This is a misconception. The Yellowstone fires were a repetition of a regular occurrence in the area (the forest was long overdue for its regular burn) and the current landscape is a recurring stage in the life cycle of the ecosystem involved. Whether it will undergo the same successional development as before (eventually returning to the wide expanses of even aged and flammable trees the white folks encountered, ready to burn again), is unknown, due to the many influences of people - a new factor - but the burn itself and the resulting landscape are not "totally different" from the norm for the area.wellwisher said:In another post, I talked about Yellow Stone National Park in the USA, and the huge million plus acre forest fire, years back, and how in a few short years after, different life appears to take over the burnt forest. Now Yellowstone is totally different being more meadows and small trees and the life that supports. It is no longer old world forest.
this is micro evolution.There is a more fundamental misunderstanding in play here. The genetic isolation JamesR referred to is what defines speciation - the divergent group is no longer breeding within the ancestral group, as most remarkably evident in the case of Darwin's finches. Nothing better illustrates this than the stranding of the first finch on the Galapagos and the emergence of the many new forms that will not interbreed, each adapted to a particular food source for which there was evidently no competition. In parallel to this were the adaptations of the terrestrial iguana to the most unusual of survival traits - diving for seaweed. Additionally Galapagos turtles had adapted to conditions local to the particular island they inhabited (long vs short neck to subsist on short vs tall plants). Is this microevolution or macroevolution?
there were 50 there, not just 3 or 4 or 10.Before you consider that, answer this: are Darwin's finches a case of gradualism or punctuated equilibrium? They are new species, and the key to understanding evolution by natural selection. Once we have this viable mechanism in place to explain what happened on Galapagos, does it really matter what Gould, Ayala or Lewin have added to the mix?
see immediately above.Has anything they said really changed our understanding that evolution, as Darwin explained it, is fundamentally correct?
Every time you speak, you're wrong about something. If only you didn't feel the need to defend such an absurd position you'd probably manage to be right about a few things here and there, just like the rest of us. But I guess this is just the damage that creationists do to what might otherwise be intellectually healthy individuals. Such a shame. And I really mean that.
Anyway, just to help James put this one small thing to rest:
[video=vimeo;69369869]https://vimeo.com/69369869[/video]
there were 50 there, not just 3 or 4 or 10.
don't you understand?
these scientists FOUND NO EVIDENCE for accumulating changes that lead to macro evolution.
these scientists had almost 200 years to find this stuff and it simply wasn't forthcoming.
to imply that we have all these wonderful transitional fossils that explains evolution is simply untrue.
Fifty scientists drawing conclusions on incomplete information.there were 50 there, not just 3 or 4 or 10.
don't you understand?
these scientists FOUND NO EVIDENCE for accumulating changes that lead to macro evolution.
these scientists had almost 200 years to find this stuff and it simply wasn't forthcoming.
well what do you know, it works.Thankyou Rav. Just... Thankyou...
(I've encountered this very problem many times when selecting stuff from PDFs).
we were led to believe we had them before.I've given you seven very specific examples of transitional fossils that have been discovered since 1983 and you have yet to address that in anything even approaching a meaningful fashion.
we were led to believe we had them before.
the article proves it.
All discovered between 1994 and 2004.You expect me to provide you with a list of transitional fossils discovered in the last thirty years?
Realisticaly, I only need to provide one to disprove your hypothesis.
Transition between Fishes and land animals? Tiktaalik! I choose you! (2004)
Transitional phase between Freshwater and Marine habitats in Cetaceans? Abulocetus natans! I choose you! (1994)
Transition between terrestrial habitation and aquatic habitation Sea cows? Pezosiren portelli! I choose you! (2001)
Transition between Mammals and Reptiles? Morganucodon, Hadrocodium wui, Repenomamus and Gobicondon! I choose you (all chinese, c2001).
I need one example of a transitional fossil that has been discovered in the last thirty years. I've given you seven.
What it shows that you didn't have a clue as to what you copied and pasted. What a maroon.well what do you know, it works.
it appears i did indeed lift the page number, which is even better because it places the onus DIRECTLY on paleontologists, those that are EXPERTS on fossils.
what, exactly do you think they were missing, besides the fossils?leopold
And all 50 of them had insufficient information to come to any such conclusions, . . .
how many "transitional fossils" have you seen or heard of pre 1983?Bullshit.
That was (in some cases anyway) the list that Rav provided. The 7 I mentioned were 7 that have been discovered since 1983, I even provided you with the dates of discovery.
By the way, it was me that pointed out that Rav's list included discoveries predating 1983 so don't try an pull that one over me, it won't work and makes you look like a liar.
how many "transitional fossils" have you seen or heard of pre 1983?
in all honesty origin what does the article say to you about the conclusion and why they reached it.You guys have pointed out leopolds misconceptions maybe 10 times and he still does not get it.
these people seen, by the record that microevolution can't be extrapolated to macroevolution.
then how did they arrive at the clear no other than the record?No, they don't say that. That's something you believe that has no basis in fact.
how many "transitional fossils" have you seen or heard of pre 1983?
these scientists implied these fossils don't exist by their conclusion.