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Can you prove and finds evidence for evolution of insects?

 
 
Tom0987
 
Reply Sun 4 Jul, 2010 09:31 am
I googled for some pictures of the insect in amber, and found a nice website with insect in amber. Here is a link to it - Edit [Moderator]: Link removed

Impressive that you can see so long back in time and that insects have not changed at all. Is it possible to prove and finds evidence for evolution of insects. Is that all, any evolution?
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farmerman
 
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Reply Sun 4 Jul, 2010 11:30 am
@Tom0987,
The majority of amber with insect inclusions is from the Cretaceous up to the Miocene. These are relatively recent times and even the older insect fossils in K amber do show some major morphological doifferences.

To see the evolution (based upon fossil evidence) You need to go back to theLate Devonian and Carboniferous sediments (mostly branch coal and "bone coal" layers where the swamp deposits hd preserved layers of vegetation and some arthropoda .
Heres where you can see the major morphological changes.

See some of the web collections from the various museums around the world.
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rosborne979
 
  1  
Reply Mon 5 Jul, 2010 09:34 am
@Tom0987,
Tom0987 wrote:
Impressive that you can see so long back in time and that insects have not changed at all. Is it possible to prove and finds evidence for evolution of insects. Is that all, any evolution?

Insects have changed over time, but you have to go back really far to see it because insects are more ancient than most vertebrates.

Ancient Sea Scorpion:
http://opa.yale.edu/opa/images/pr/2007pr/scorpion-fig1-lg.jpg
farmerman
 
  1  
Reply Mon 5 Jul, 2010 12:14 pm
@rosborne979,
In order to see the actual evolution of insects from their wingless, sea dwelling ancestors, Look up in the "Treatise of PAleontology" on the evolution of sevral groups of arthropods
Chelicerates,- (which contains the big eurypterids, the chelicerates (horseshoe crabs) and arachnids)

Myriapods,- centipedes and millipedes

Insecta,-the bugs as we know them

The fossil assemblages are quite complete from the Devonian to present and you can satisfy yourself , by looking at the hundreds of photos of these specimens in "The Treatise", that there was a significant series of evolutionary spurts in these animals through time.

They all derive from the earliest arthropods of the Early Cambrian.
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