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USA . . . war on the horrizon? What do U think?

Simcountry: Simcountry Bulletin Board  USA . . . war on the horrizon? What do U think?

hymy .. (Kebir Blue)

Saturday, July 31, 2004 - 07:15 pm Click here to edit this post
If the common ancestor left a fossil record then yes it has a name. As far as I know, the common ancestor between other primates and humans isn't known yet.

Of course, we could have a fossil record of it, but archeaologist in generel are a disagreeable lot, and constantly argue these points. It would be very difficult to establish difintively without mitochondrial DNA. And even then it would still be based on some assumptions. Though I vagulely remember reading they had found a chimp like human ancestor that could be very close to the divergence between the two. (chimps are our closest animal cousin at 99+% genetic similarity)

Ultimately the change is so slow that one cannot draw a line very well, and say "there is the common ancestor". It may be unknowable unless you have a time machine.

A common ancestor would have some of the traits of both descendants. Given enough time a descendant might lose all the traits that are common with a cousin, but unlikely. Technically though all life on the planet has a single common ancestor. And we as humans still share a growth&development stage characteristic with Fish. Many new traits arise as a result of the separation at the common ancestor.

Of interest, recently whale fossils were found that have a pelvis/leg structure similar to land mammals, but it was small and vestigial.

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