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Author Topic:   Land Mammal to Whale transition: fossils Part II
randman 
Suspended Member (Idle past 4921 days)
Posts: 6367
Joined: 05-26-2005


Message 196 of 288 (233393)
08-15-2005 11:53 AM
Reply to: Message 193 by Percy
08-15-2005 11:16 AM


Re: only 2 issues
I think what you're trying to say here is that if the modern horse evolved from an evolutionary tree that included 28 ancestral relatives (not all living at the same time, of course) that the whale should have some similar number. This is not an unreasonable assumption,
Thanks for granting that's a reasonable assumption. Note that I did mention there needs to be studies to qualify and narrow the range of predicted transitional species, and I hear your reasons for considering possibilities for less.
Nonetheless, you are ignoring a major and huge issue. The differences between horse ancestors to the horse, and land mammals compared to whales are massive. Even if we grant that some sequences could happen as narrowly and quickly as possible, such that similar developments as a horse ancestor to a horse could take place with as few speciation events as any that have ever occurred, there would still be dozens of other transitional sequences.
So in reality, it is extremely unlikely that as low a ratio of 28 to 1 would occur. It is more likely to a far greater ration, based on just looking at the "distance" or range of evolution required. I would guess based on horse evolution, that it would be more like 500-800 to 1.
Obviously, we would need to examine other mammals with many preserved ancestors over a shorter range of development, like the horse, to see if this analysis holds up, but imo, it's a reasonable assumption, and I have not seen any evidence to date of evidence from evo studies that would challenge it.
That we do not know these things is why the rest of us belive you cannot estimate how many fossils of extinct whale-related species we should find.
This is somewhat baffling because it appears there are studies that try to estimate numbers of unknown species, and yet you guys seem to think estimating a range of what to expect is not possible.
Why do you think we should find more whale transitionals than we do?
It's pretty simple. Let's take 100 critical features in mammals, and compare the 2 suborders of whales. Let's call one A and another B. If A and B are 98% similar, and have 14 whale families between them, but if the nearest theorized transitional is, say, 70% similar, then is it not reasonable to expect 15 times more families to have existed in between or more.
I say "more" because it is likely more branches appeared, and then we get into using the horse example which includes those.
Now, of course, maybe some transitional sequences are not atypical, but we are talking of a massive level of change, and as such with many sequences involved. The idea of you guy's that this could happen with relatively few transitionals is just not substantiated in any way.
I have given reasons, albeit not peer-reviewed studies or complete analysis, but valid and reasonable assumptions that such a major transition from a land mammal to whales would entail a huge number of transitionals.
I have shown that there were thousands of fossils of Basilosaurus which was roughly approximate with the transitional era and thousands of fossils of the current whale suborders.
No one has offerred a credible reason for why thousands of some forms should be seen and yet nearly no transitionals relatively speaking.
You say, well, the process may not be typical of horses, and I grant you that parts of the process may not be, but it's unreasonable, imo, to claim the entire process produced thousands of Basilosaurus and yet none of the direct aquatic whale ancestors who would have occupied the same ecological niches.
Essentially what I hear the evolutionist argument consisting of is that if no transitionals were ever found, whales would still have evolved from land mammals, and if just a few were found, then the same argument is made, and that there is no real acceptance of the need for assessing the fossil record overall anyway. You are going to insist the fossil record substantiates evolution no matter what the data is because for evos, it is already a foregone conclusion, and there is no fossil data that can convince you otherwise.
So instead of really trying to assess how many transitionals there should be and compare that to how many should appear in the fossil record using statistical analysis based on comparitive studies of fossilization of aquatic and semi-aquatic animals, the evo argument is there is no need to do that.
Imo, that's not good science, and it's running away from the data and evidence rather than engaging it. Imo, you cannot claim the fossil record supports land mammal to whale evolution until such analyses have been done, and to do so is to make a massive unsubstantiated claim and overstatement.
Maybe when I have more time, I can dig around and see if estimates of the numbers of transitionals have been done. I feel certain some evolutionist scientist would have seen the need and would have done such an analysis, which you guys seem to claim is impossible.
But if I do find such an analysis, I suspect it won't matter because of the reasons mentioned above, the fossil record for the evos a priori supports the transition regardless of what is found there. It's sort of a matter of faith with you guys, imo.

This message is a reply to:
 Message 193 by Percy, posted 08-15-2005 11:16 AM Percy has replied

Replies to this message:
 Message 216 by Percy, posted 08-15-2005 3:38 PM randman has replied

  
randman 
Suspended Member (Idle past 4921 days)
Posts: 6367
Joined: 05-26-2005


Message 197 of 288 (233394)
08-15-2005 11:57 AM
Reply to: Message 192 by wj
08-15-2005 9:51 AM


Re: Boney species
Remarkable stasis in the context of this transition is the point.
Maybe you didn't realize that, but your tone is absurd. Of course, whales have changed a lot over the years with some species going extinct and others arising, but comparing the changes for the current whale suborders to the changes that would need to have occurred to transition a land mammal to a whale in 10-15 million years, the current whale suborders have shown remarkable stasis.
The rate of change would be fairly minor compared to the theoritical rate of change occuring before the 2 suborders appears, assuming such a theoritical rate occurred at all, which imo, the evidence does not seem to substantiate as far as the fossil record.

This message is a reply to:
 Message 192 by wj, posted 08-15-2005 9:51 AM wj has not replied

Replies to this message:
 Message 199 by mick, posted 08-15-2005 12:18 PM randman has replied

  
Percy
Member
Posts: 22480
From: New Hampshire
Joined: 12-23-2000
Member Rating: 4.8


Message 198 of 288 (233398)
08-15-2005 12:08 PM
Reply to: Message 195 by NosyNed
08-15-2005 11:42 AM


Re: Bush and Tree
NosyNed writes:
A tree shrunk down to 3 feet high (.9xx m) would not look like a bush. The reason for the bush analogy is a bush has no main stem.
Hmmm. Okay, we must be thinking about different types of bushes. Almost all my bushes have "main stems", exactly analogous to a tree.
I think the bush analogy is fine if it works for you, but for me in terms of branching structure I see no significant difference. The fact that a tree is big and a bush is small doesn't seem relevant, it's the branching that's significant.
I have no objection to the bush analogy. What I objected to was its characterization as representing "starts, stops and jumps." I don't see how a bush is any better at representing these than a tree, which is to say, not at all.
--Percy

This message is a reply to:
 Message 195 by NosyNed, posted 08-15-2005 11:42 AM NosyNed has not replied

Replies to this message:
 Message 201 by PaulK, posted 08-15-2005 12:27 PM Percy has replied

  
mick
Member (Idle past 5008 days)
Posts: 913
Joined: 02-17-2005


Message 199 of 288 (233403)
08-15-2005 12:18 PM
Reply to: Message 197 by randman
08-15-2005 11:57 AM


Re: Boney species
randman writes:
comparing the changes for the current whale suborders to the changes that would need to have occurred to transition a land mammal to a whale in 10-15 million years, the current whale suborders have shown remarkable stasis
hi randman,
first, the transition from land mammal to aquatic mammal took at least 50 million years, not 10-15 (you are out to a factor of 5, so can we grant archaeocetes five time more "transition" than exists between contemporary species of aquatic mammal?)
second, the radiation of archaeocetes includes all whale-like mammals (i.e. dolphins too) not just true whales. Compare the right whale to the hump-backed dolphin:
right whale
dolphin
That ain't "remarkable stasis".

This message is a reply to:
 Message 197 by randman, posted 08-15-2005 11:57 AM randman has replied

Replies to this message:
 Message 202 by randman, posted 08-15-2005 12:45 PM mick has replied

  
deerbreh
Member (Idle past 2915 days)
Posts: 882
Joined: 06-22-2005


Message 200 of 288 (233405)
08-15-2005 12:22 PM
Reply to: Message 181 by randman
08-15-2005 12:27 AM


Re: Boney species
randman writes:
Maybe someone can provide the evo answer to why whales haven't changed so much for 30-40 million years or something like that, but land mammals were able to evolve into whales im 10-15 million years?
Why are you insisting that this is out of line with the TOE? It is a strawman argument to say that this is a problem. You were correct when you said that evolution does not proceed at a constant rate. The environment does not change at a constant rate so why should organisms evolve at a constant rate? The fact that you don't "think" 10 million years is enough to go from land mammal to whale is not evidence. It is incredulity. Argument from incredulity is not a valid argument.
On edit: I had suspected that your timetables were off here and that the "remarkable stasis" you were claiming was just your own characterization in an attempt to bolster your argument. Mick (msg 197) seems to have provided evidence on both points.
This message has been edited by deerbreh, 08-15-2005 12:28 PM
This message has been edited by deerbreh, 08-15-2005 12:29 PM

This message is a reply to:
 Message 181 by randman, posted 08-15-2005 12:27 AM randman has replied

Replies to this message:
 Message 203 by randman, posted 08-15-2005 12:50 PM deerbreh has replied

  
PaulK
Member
Posts: 17825
Joined: 01-10-2003
Member Rating: 2.2


Message 201 of 288 (233406)
08-15-2005 12:27 PM
Reply to: Message 198 by Percy
08-15-2005 12:08 PM


Re: Bush and Tree
The point of the bush versus tree is the shape. The bush model is broader, featuring more side-branches, while the tree places a heavy emphasis on the trunk. Examples of adaptive radiation would, then, be very "bushy", while phyletic gradualism would be more like a tree.

This message is a reply to:
 Message 198 by Percy, posted 08-15-2005 12:08 PM Percy has replied

Replies to this message:
 Message 214 by Percy, posted 08-15-2005 3:17 PM PaulK has not replied

  
randman 
Suspended Member (Idle past 4921 days)
Posts: 6367
Joined: 05-26-2005


Message 202 of 288 (233410)
08-15-2005 12:45 PM
Reply to: Message 199 by mick
08-15-2005 12:18 PM


Re: Boney species
first, the transition from land mammal to aquatic mammal took at least 50 million years, not 10-15
Mick, can you substantiate that? The reason I ask is that Pakicetus is a fully and solely land mammal dated to 52 million years ago, and it's hard to tell since evos call a lot of things whales that are not of the 2 current suborders and don't look like whales, but certainly there were aquatic mammals that supposedly derived from either Pakicetus or other land mammals dated 40 million years, and regular whales dated back 35 million years ago.
So the transtition happened from land mammal to aquatic mammals theoritically occurred within 12 million years, or less.

This message is a reply to:
 Message 199 by mick, posted 08-15-2005 12:18 PM mick has replied

Replies to this message:
 Message 224 by mick, posted 08-15-2005 8:15 PM randman has replied

  
randman 
Suspended Member (Idle past 4921 days)
Posts: 6367
Joined: 05-26-2005


Message 203 of 288 (233411)
08-15-2005 12:50 PM
Reply to: Message 200 by deerbreh
08-15-2005 12:22 PM


Re: Boney species
Grow up deerbreh. Mick's answer is wrong, and the point of whale changes not being so massive is to illustrate basing rates of change over, as Ned did, is not going to necessarily work, and to also just bring the facts into play, something sorely missing in your post.
The simple truth is there is probably no fossil evidence that can discredit ToE in your mind.

This message is a reply to:
 Message 200 by deerbreh, posted 08-15-2005 12:22 PM deerbreh has replied

Replies to this message:
 Message 204 by deerbreh, posted 08-15-2005 1:13 PM randman has replied

  
deerbreh
Member (Idle past 2915 days)
Posts: 882
Joined: 06-22-2005


Message 204 of 288 (233419)
08-15-2005 1:13 PM
Reply to: Message 203 by randman
08-15-2005 12:50 PM


Re: Boney species
randman writes:
Grow up deerbreh.
Ok this is uncalled for. This is not debate. My main point was that you were setting up a strawman argument as well as arguing from incredulity, a logical fallacy. Instead of addressing those points you chose to resort to an ad hominum attack, which is against the rules of the board.
As for there being no fossil evidence that could discredit TOE in my mind - well now that would be difficult since all of the fossil evidence thus far has verified the TOE which is not surprising since the TOE is based on fossil evidence as well as evidence from extant organisms. So I guess you've got me there. Sort of, anyway. So maybe I should throw it back to you. Is there any fossil evidence that would confirm the evolution of whales from land mammals (to get back on topic as well) in your mind?

This message is a reply to:
 Message 203 by randman, posted 08-15-2005 12:50 PM randman has replied

Replies to this message:
 Message 205 by jar, posted 08-15-2005 1:17 PM deerbreh has replied
 Message 206 by randman, posted 08-15-2005 1:21 PM deerbreh has replied

  
jar
Member (Idle past 416 days)
Posts: 34026
From: Texas!!
Joined: 04-20-2004


Message 205 of 288 (233422)
08-15-2005 1:17 PM
Reply to: Message 204 by deerbreh
08-15-2005 1:13 PM


Fossil evidence to refute the TOE?
Of course there is the possibility of such evidence. If, for example, we found a modern whale fossil in an undisturbed Cambrian layer, I think that would certainly cause a stir.

Aslan is not a Tame Lion

This message is a reply to:
 Message 204 by deerbreh, posted 08-15-2005 1:13 PM deerbreh has replied

Replies to this message:
 Message 208 by deerbreh, posted 08-15-2005 2:11 PM jar has not replied
 Message 209 by Chiroptera, posted 08-15-2005 2:13 PM jar has not replied

  
randman 
Suspended Member (Idle past 4921 days)
Posts: 6367
Joined: 05-26-2005


Message 206 of 288 (233424)
08-15-2005 1:21 PM
Reply to: Message 204 by deerbreh
08-15-2005 1:13 PM


Re: Boney species
My main point was that you were setting up a strawman argument as well as arguing from incredulity, a logical fallacy.
And my point is your accusation is unfounded, inaccurate, and totally asinine. It's not a staw man to explore the data, nor is the argument one of incredulity alone, nor a logical fallacy.
We are looking at the fossils available, and seeing if they properly represent, overall, the numbers of fossils that should be seen based on the massive transitions evos claim.
Unfortunately, you offer nothing to the conversation except false accusations.
Is there any fossil evidence that would confirm the evolution of whales from land mammals (to get back on topic as well) in your mind?
If a reasonable estimate of the numbers of transitionals that would need to have occurred can be made, and then a reasonable percentage of those seen in the fossil record analogous to numbers seen of whales and possibly other mammals that can reasonably be inferred to be analogous or just relevant to a degree, then I could accept the transition occurred.
To be more specific, both suborders of whales are fairly close in similarity in a lot of ways, and both are very well-represented in the fossil record. I would guess there should be many other suborders based on the massive range of differences, and within those suborders, many families of species.
We don't see them in the fossil record.
Likewise, if we don't see it, and we don't currently, I feel the most reasonable conclusion is that evolutionists are wrong in making the claim of land mammal to whale evolution.
This message has been edited by randman, 08-15-2005 01:23 PM

This message is a reply to:
 Message 204 by deerbreh, posted 08-15-2005 1:13 PM deerbreh has replied

Replies to this message:
 Message 207 by deerbreh, posted 08-15-2005 2:05 PM randman has replied

  
deerbreh
Member (Idle past 2915 days)
Posts: 882
Joined: 06-22-2005


Message 207 of 288 (233438)
08-15-2005 2:05 PM
Reply to: Message 206 by randman
08-15-2005 1:21 PM


Re: Boney species
More insults. Again, read the rules of the board.
The strawman is that you are basing your disbelief upon the assumption the TOE says that it should take more time for whales to evolve from land mammals than for radiation to occur once whales have appeared on the scene. The TOE does not say that. That is why it is a strawman argument.
You are also setting up another strawman argument in the number of transitionals that would be predicted. This one is a particularly specious argument in that you don't say how many there should be, just that we don't have a "reasonable percentage" (also undefined) of transitional fossils for the change to have occured.

This message is a reply to:
 Message 206 by randman, posted 08-15-2005 1:21 PM randman has replied

Replies to this message:
 Message 210 by randman, posted 08-15-2005 2:32 PM deerbreh has replied

  
deerbreh
Member (Idle past 2915 days)
Posts: 882
Joined: 06-22-2005


Message 208 of 288 (233441)
08-15-2005 2:11 PM
Reply to: Message 205 by jar
08-15-2005 1:17 PM


Re: Fossil evidence to refute the TOE?
jar writes:
Of course there is the possibility of such evidence. If, for example, we found a modern whale fossil in an undisturbed Cambrian layer, I think that would certainly cause a stir.
Yes it would. Good point. Also I guess if Carl Baugh really had found dino footprings and footprints of man together in the same layer of sediment that would do it as well.

This message is a reply to:
 Message 205 by jar, posted 08-15-2005 1:17 PM jar has not replied

  
Chiroptera
Inactive Member


Message 209 of 288 (233443)
08-15-2005 2:13 PM
Reply to: Message 205 by jar
08-15-2005 1:17 PM


Re: Fossil evidence to refute the TOE?
I still say that a nice line of fish-direct-to-whale transitionals would also be a big, big problem.

This message is a reply to:
 Message 205 by jar, posted 08-15-2005 1:17 PM jar has not replied

  
randman 
Suspended Member (Idle past 4921 days)
Posts: 6367
Joined: 05-26-2005


Message 210 of 288 (233447)
08-15-2005 2:32 PM
Reply to: Message 207 by deerbreh
08-15-2005 2:05 PM


Re: Boney species
I'm not making that argument as fundamental to my case here. It is problematic and evos have proposed a solution. I'm not really debating that rates can differ, but it's important in assessing the process to get a handle on the facts, and the fact rapid evolution would have to had occurred is one of those facts.
In terms of transitionals, I have given some ways to estimate that, and some ball-park estimates. So at least I have offerred something.
You are offering nothing. If you have other estimates and reasons for those estimates of the numbers of transitionals, by all means please post your estimates. Otherwise, you are not engaging in the data and argument but sitting on the side-lines making false accusations, imo, towards what I am trying to do here.

This message is a reply to:
 Message 207 by deerbreh, posted 08-15-2005 2:05 PM deerbreh has replied

Replies to this message:
 Message 213 by deerbreh, posted 08-15-2005 3:13 PM randman has replied

  
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