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there is a problem, and that's lack of evidence.
originally posted by: randyvs
Do you agree that there is a total lack of transitional fossils
in the record per capita? I say a total lack as compared to the
obvious amount that should exist, as suggested by the amount of
species that has and does exist on this planet. The evidence would
therefore be overwelming and with out doubt. As opposed to sketchy
and contrived.
originally posted by: randyvs
a reply to: Barcs
No doubt a decent retort. I can live with that.
But.....
there is a problem, and that's lack of evidence.
Do you agree that there is a total lack of transitional fossils
in the record per capita? I say a total lack as compared to the
obvious amount that should exist, as suggested by the amount of
species that has and does exist on this planet. The evidence would
therefore be overwelming and with out doubt. As opposed to sketchy
and contrived.
originally posted by: Barcs
For example homo heidelbergensis is transitional between homo sapien and homo habilis. Fossilization is rare so we aren't going to find everything.
But there is no proof of that. That's one thing gets me, is this double standard that exists among scientists.
Tony Arnold and Bill Parker compiled what may be the largest, most complete set of data on the evolutionary history of any group of organisms, marine or otherwise. The two scientists amassed something that their land-based colleagues only dreamed about: An intact fossil record with no missing links.
"It's all here--a virtually complete evolutionary record," says Arnold. "There are other good examples, but this is by far the best. We're seeing the whole picture of how this group of organisms has changed throughout most of its existence on Earth."
The organism that Arnold and Parker study is a single-celled, microscopic animal belonging to the Foraminiferida, an order of hard-shelled, planktonic marine protozoans. Often shortened to "forams," the name comes from the Latin word foramen, or "opening." The organisms can be likened to amoebas wearing shells, with perforations through which their protoplasm extends. The foram shell shapes range from plain to bizarre.
We've literally seen hundreds of speciation events," syas Arnold. "This allows us to check for patterns, to determine what exactly is going on. We can quickly tell whether something is a recurring phenomenon--a pattern--or whether it's just an anomally. This way, we cannot only look for the same things that have been observed in living organisms, but we can see just how often these things really happen in the environment over an enormous period of time.
we have an extraordinary claim?
But what about the more complex organisms? I see no higher life form in your example. And this only points to an exaggeration as I could choose to see it. No?
The numbers down the left hand side indicate the depth (in feet) at which each group of fossils was found. As is usual in geology, the diagram gives the data for the deepest (oldest) fossils at the bottom, and the upper (youngest) fossils at the top. The diagram covers about five million years.
The numbers across the bottom are a measure of body size. Each horizontal line shows the range of sizes that were found at that depth. The dark part of each line shows the average value, and the standard deviation around the average.
The dashed lines show the overall trend. The species at the bottom is Pelycodus ralstoni, but at the top we find two species, Notharctus nunienus and Notharctus venticolus. The two species later became even more distinct, and the descendants of nunienus are now labeled as genus Smilodectes instead of genus Notharctus.
As you look from bottom to top, you will see that each group has some overlap with what came before. There are no major breaks or sudden jumps. And the form of the creatures was changing steadily.
originally posted by: randyvs
But there is no proof of that. That's one thing gets me, is
this double standard that exists among scientists. So here
we have an extraordinary claim?
originally posted by: randyvs
a reply to: Barcs
Technically every fossil is transitional
With respect to you Barcs.
But there is no proof of that. That's one thing gets me, is
this double standard that exists among scientists. So here
we have an extraordinary claim?
But what about the more complex organisms?
I see no higher life form in your example.
And this only points to an exaggeration as I could
choose to see it. No?
originally posted by: Barcs
a reply to: randyvs
It's not that complicated. To figure out the answer, you only need to ask a few basic questions.
2. How old are those rock carvings?
___________________________________________________________________________________________________
1. 200,000 years give or take
2. 4000 years or so
The gap is not that wide.
Heidelbergensis is likely the transitional species between Homo Erectus and Early Modern Humans.