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RAZD Member Posts: 12010 From: the other end of the sidewalk Registered: Member Rating: 3.8 |
"The fossil record shows variations of all sorts of things but will time turn a dog kind into something that we would say is clearly not a dog?" There are several issues involved in this question. One is just how much change is necessary to convince a creationist that large scale change has occurred. Another is whether macroevolution is defined by large scale change. A final one is determining what you really means by "something that is not a dog" as "something" is not a very well defined scientific term. Do you mean when will a dog become a new species that is not a part of the wolf species (which we take as the basal dog from which all others have descended)? Or that it will become something that is as different from a wolf as say a domestic cat is from a fox? To answer these questions let's do a little comparative anatomy: Red Fox House Cat Where the standard for comparison of features is the extremes of variation within the dog varieties from the wolf, and that have been artificially bred by humans over the last several thousands of years Dog Wolf The question will be whether the difference in the traits between the cat and the red fox is MORE or LESS than the maximum differences found in varieties of dogs from the wolf. We'll call this factor "deltaFactor" with these categories: +3 = much more difference between cat and fox than between dog and wolf Those are most of the visible differences. Feel free to add to the list with whatever comes to mind. In a lot of the -3 cases the needle is pegged at much much less difference between cat and fox than between the extreme varieties of dog and wolf. When we compare the skeletons, we can match bone for bone from cat to fox to dog to wolf, but we see much more variation in size and proportions between dog and wolf than between cat and fox. There are no bones that are special to cats or foxes or dogs. This can be counted as a -3 x number of bones. For additional comparisons see: Cat skeleton When we compare internal organs, we can match organ for organ from cat to fox to dog, but we see much more variation in size and proportions between dog and wolf than between cat and fox. There are no organs that are special to cats or foxes or dogs. This can be counted as a -3 x number of organs. Conclusion: from feature to feature to feature, a cat is more similar to a red fox than some dogs are like wolves. The dog is in the species C. lupus The taxon level where dogs and wolves are related is in the C. lupis species. The dog is in the genus Canis The fox is in the species V. vulpes The taxon level where dogs, wolves and foxes are related is in the Canidae family The cat is in the species F. silvestris The taxon level where cats and foxes (and dogs and wolves) are related is in the Order Carnivora. By biological evolution standards this means that there is greater macroevolutionary 'distance' between cats and foxes than between foxes and dogs and much more macroevolutionary 'distance' between cats and foxes than there is between dogs and wolves, and certainly much more than exists within the dog species, yet not much difference is involved. Conclusion: "large scale change" (amount of difference) is not a measure of macroevolution ... as used by evolutionary biologists. If you want to discuss what macroevolution really is in biology you can go to MACROevolution vs MICROevolution - what is it?. Back to the original quote: "The fossil record shows variations of all sorts of things but will time turn a dog kind into something that we would say is clearly not a dog? " So what would you like this to become? ![]() Would a horse be enough? Would you dispute that a horse is clearly not a dog? So the questions that creationists must answer are: (1) If your definition of macroevolution is different from evolutionary biology what is it? We'll start with those - and see what turns up. Enjoy Edited by RAZD, : changed dog/dog to dog/wolf for clarity Edited by RAZD, : changed dog/dog to dog/wolf for clarity Edited by RAZD, : " & clarity Edited by RAZD, : late night repair work Edited by RAZD, : more corrections Edited by RAZD, : added thread link Edited by RAZD, : clarity. Edited by RAZD, : . by our ability to understand Rebel American Zen Deist ... to learn ... to think ... to live ... to laugh ... to share. • • • Join the effort to solve medical problems, AIDS/HIV, Cancer and more with Team EvC! (click) • • •
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RAZD Member Posts: 12010 From: the other end of the sidewalk Registered: Member Rating: 3.8 |
The point of this thread is to show that the physical characteristics that creationists use to define "large scale change" are not that different from species to species. Compared to the difference between a fox and a domestic cat, which are different "kinds" in any creationist classification I've seen, the changes that we see in dogs represents "large scale change" ... due to evolution under artificial selection. The question has always been what do creationists define as "large scale change" ... other than using it as a smokescreen to hide their denial behind.
The creationist will just say that is microevolution, and that what they want is evidence that macroevolution occurs. When you show them macroevolution occurring (in say the foram fossil record) they just say that doesn't show "real" macroevolution because it doesn't show "large scale change" occurring in species. This thread is to define what "large scale change" means in reality and then see how it is shown in the fossil record. It's for Beretta, TheWay, SomeoneWhoCares, and any creationist in denial of reality. Enjoy. Edited by RAZD, : . by our ability to understand Rebel American Zen Deist ... to learn ... to think ... to live ... to laugh ... to share. • • • Join the effort to solve medical problems, AIDS/HIV, Cancer and more with Team EvC! (click) • • •
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RAZD Member Posts: 12010 From: the other end of the sidewalk Registered: Member Rating: 3.8 |
From Beretta again (Message 199):
Notwithstanding the fact that the study in question only looked at foraminifera, and so it would exclude any evidence of forams that became non-forams, the problem for Beretta and others is that this does represent macroevolution as used in evolutionary biology by evolutionary biologists. Here's the excerpt from my post in question (Message 181):
You notice that Beretta did not argue with the record of change in hereditary traits in the population from generation to generation, nor with the evidence that speciation had occurred numerous times, nor with the evidence that branching above the level of speciation was also recorded in the foram fossil record. No, what Beretta did was to say that it is not enough change to satisfy him, or words to that effect. The fact that the change shown meets the criteria of macroevolution used by evolutionary biologists is irrelevant, for they just pull out the half-truth mixed with lie - that dogs will always be dogs, and forams will always be forams, and they will never become "something else" (which is undefined). So the question for creationists is: how much change is needed to satisfy you? If there is less "large scale change" between a cat and a red fox than there is between breeds of dog and a wolf, then how can "large scale change" be used to measure whether macroevolution has or has not occurred? Denial of every piece of evidence only goes so far. "Something else" is not a scientific metric. Enjoy. Edited by RAZD, : added another quote
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RAZD Member Posts: 12010 From: the other end of the sidewalk Registered: Member Rating: 3.8 |
First of it is not a matter of "surviving better" but just of surviving and breeding. The evidence shows a clear development of increasingly bird like characteristics in one branch of dinosaurs, dinosaurs that have feathers covering their bodies even though they have no long feathers on their arms, and then dinosaurs with longer and longer feathers on their arms (and legs) until the point is reached where the dinosaur can fly. Plenty of intermediate fossils are now known that demonstrate this transition from non-flight to flight. In each case they also show fully formed individuals capable of surviving and reproducing with other members of their species (the other intermediates that are similarly developed for increasing ability to jump, glide, fly. Just as "fully formed" as archaeopteryx is even thought "archy" shows clear differences to modern birds, birds that show further development by the same process of change in hereditary traits in populations from generation to generation. See the list of similarities of features for non-flight dinosaur ancestors to "archy" provided by JB1740 in Message 9.
Because what you think happened is not what happened. The difference between non-flight wing and flight wing is very little. The non-flight wing only need provide a minor net advantage to the individuals for survival and reproduction, and being able to make a "glide/jump" a little further to catch prey or escape a predator is that advantage.
Forams are a Phylum in taxonomy. http://www.msu.edu/%7Enixonjos/armadillo/taxonomy.html quote: "Macroevolution" - as defined and used in the science of evolutionary biology - is the accumulation of differences between groups above the level of species, differences that result from evolution within each species ("microevolution") in a different direction from other species. That means there is a lot of room for macroevolution between species and phylum and still be within foraminifera. For example, humans are in the phylum Chordata the group of animals that have a spinal chord, and which includes fish, but not worms.
Then there would be no ancestors of forams.
Ignorance of how evolution works does not make their opinion valid. Ignorance of what macroevolution really is and how it occurs does not make creationist or ID concepts valid, real or even worth considering. If they are using a definition that is different from the one above then they are not talking about the same macroevolution, they are discussing macroevolutionC and not macroevolutionE.
But whales are still mammals.
And birds are still dinosaurs.
What we have with the evolution of birds is the forelimb evolving into a feather covered forelimb and then into a wing that develops further once flight is achieved, but it is still a forelimb, it still has the bones, muscles and ligaments etc of forelimbs.
That would be because you are neglecting natural selection, a mechanism that is not random. Would you care to walk through an example of such a transition? One that shows the development of a unique feature that did not exist before? Enjoy. Edited by RAZD, : . Edited by RAZD, : “ = " by our ability to understand Rebel American Zen Deist ... to learn ... to think ... to live ... to laugh ... to share. • • • Join the effort to solve medical problems, AIDS/HIV, Cancer and more with Team EvC! (click) • • •
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RAZD Member Posts: 12010 From: the other end of the sidewalk Registered: Member Rating: 3.8 |
The starting point is a comparison of these two skeletons} http://www.wsu.edu:8000/~crd/skeldog.html quote: and (sorry it's so dark, but I wanted the same general "pose" for the skeletons) http://www.britannica.com/eb/article-9029542/dawn-horse quote: This establishes the basis for showing an example of the development of a unique feature that did not exist before. We have to start before the feature existed eh? We don't need to worry about the skull and some other minor differences, because what I want to focus on is the legs and feet and how similar they are in size, proportion and position, with the foot showing splayed toes in the formation of a "paw" in both cases. These animals wold be about the same size and weight and they would have similar walking, running and jumping ability, based on their similar skeletons. Would you agree that these skeletons are similar in those features. Enjoy. Edited by RAZD, : . Edited by RAZD, : changed links, flipped eohippus Edited by RAZD, : sp subtitle Edited by RAZD, : . by our ability to understand Rebel American Zen Deist ... to learn ... to think ... to live ... to laugh ... to share. • • • Join the effort to solve medical problems, AIDS/HIV, Cancer and more with Team EvC! (click) • • •
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RAZD Member Posts: 12010 From: the other end of the sidewalk Registered: Member Rating: 3.8 |
Yes, but only the general similarities we can see from these pictures are needed here -- size, general pose and proportions of bones, shape of the legs, shape of the feet. There are a lot of differences that scientist studying the actual skeletons of the fossils would see that we can't, like the teeth or the claws: http://www.talkorigins.org/faqs/horses/horse_evol.html quote: So there were differences as well as similarities.
We still call them homologies, and having a common ancestor also means they have a common archetype or design - the ancestor. Concepts are not necessarily contradictory. Enjoy. Edited by RAZD, : sp Edited by RAZD, : No reason given. Edited by RAZD, : . by our ability to understand Rebel American Zen Deist ... to learn ... to think ... to live ... to laugh ... to share. • • • Join the effort to solve medical problems, AIDS/HIV, Cancer and more with Team EvC! (click) • • •
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RAZD Member Posts: 12010 From: the other end of the sidewalk Registered: Member Rating: 3.8 |
We can come back to this later, for now we can assume that dog and eohippus may or may not be related, but their past is not the question. We know there are some differences between them - one is carnivorous (meat eater) and the other is omnivorous (meat & vegetable eater}, so the teeth are different. We can also see differences in the skulls. But the question originally was what could dogs hypothetically become given enough time - and to answer that we start with an animal with similar size, shape, posture and feet from the fossil record, one ancient enough to show some "macroevolution" in later descendants. So we just need to look at the similarities of bones and their sizes and proportions, and at the shapes and posture of the legs and feet. We don't need to claim identity, just similarity.
That would make an interesting topic. For now the question is: can we use eohippus and what it evolves into as an analogy to a dog and what can hypothetically happen in the future. Do the skeletons show overall general similarity in size, shape and posture, and do the feet in particular look similar, with toes and a "pad-footed paw" configuration, including "toenails"? They don't have to be identical, just similar enough to be analogous. If the answer is yes, then we can move on to the evolution from eohippus to later animals. Enjoy. Edited by RAZD, : found eohippus was omnivorous not vegetarian (like horse) Edited by RAZD, : . Edited by RAZD, : subtitle sp Edited by RAZD, : . by our ability to understand Rebel American Zen Deist ... to learn ... to think ... to live ... to laugh ... to share. • • • Join the effort to solve medical problems, AIDS/HIV, Cancer and more with Team EvC! (click) • • •
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RAZD Member Posts: 12010 From: the other end of the sidewalk Registered: Member Rating: 3.8 |
Yes "something" ... Something that - 55 million years ago, at a macro level ... Something that - over a period of 55 million years ... Becomes something that - today, at a macro level ... Becomes something that - today, at a micro\genetic level ... Clearly in the present day forming 7 living out of 8 known daughter species of a common parent species, present day species that are the descendants of this general pattern of evolution, as shown by: quote: Where we see the usual "family tree" representation of the fossil record for the evolution of horses, from our eohippus (Hyracotherium) where we started to Mesohippus, to Pliohippus, to Equus, complete with side branches and cousins. Note that the species shown are the "type" species for a whole genus of related (sibling) species, and that the fossil record contains many more species than are shown (Equus includes horses (1 wild species), zebras (3 wild species), asses (3 wild species) and quaggas (and other extinct species, some in N.America) ... at least 8 species known in historical times). That's the usual "party line" of evolutionary biology based on the evidence of the fossil record. Now, if cognitive dissonance hasn't already disrupted comprehension of the evidence of reality, the final steps are easy: Differences vs Similarities Step 1: We start with the dog skeleton, the eohippus skeleton and a modern horse skeleton, and we start measuring every bone (length, diameter), joint (angle, movement), tooth (size, location, number), everything we can measure about eohippus and find analogous on dog and horse ... And catalog the relative similarities\differences: notes 0 ≤ "%D" ≤ 100 where 0% would be identical and 100% would be entirely different (nothing matches). Notice that we have hundreds of bones to compare, plus joint angles, plus proportions of one bone to the next, plus teeth, jaw, skull elements ... and we can easily end up with thousands of metrics to measure and compare. This kind of thing has always been done, though it may have just been rudimentary comparisons of bone types and dimensions with a subjective conclusion. Now, with the aid of computers and digital scanning equipment we can process the data directly and objectively. Now we can calculate the "%D" for eohippus to dog and for eohippus to horse, and the lower result will mean that the eohippus is closer in average characteristics to that species. For eohippus to dog and horse comparisons, the results will clearly be that eohippus is much closer in average characteristics to dog than to horse. Step 2: We add another species to the mix: Orohippus And catalog the relative similarities\differences: Now we can calculate the "%D" for eohippus to dog and for eohippus to horse and for eohippus to orohippus, and the lower result will mean that the eohippus is closer in average characteristics to that species. For eohippus to dog, horse and orohippus comparisons, Step 3: We switch to orohippus from eohippus and add Mesohippus in place of orohippus and repeat: And catalog the relative similarities\differences: Now we can calculate the "%D" for orohippus to dog and for orohippus to horse and for orohippus to mesohippus, and the lower result will mean that the orohippus is closer in average characteristics to that species. For orohippus to dog, horse and mesohippus comparisons, Steps 4, 5, 6, 7, 8 and 9 ...: Repeat for Miohippus, Parahippus, Merychippus, Pliohippus, Dinohippus and finally Equus Results We start with eohippus and compared it to dog and horse skeletons and determine that eohippus is clearly closer in average characteristics to dog than to horse. We then compare eohippus to orohippus and find that eohippus is about as different from orohippus as from dog. When we move to orohippus and then mesohippus we find that they are closer to each other than to dog and not as different as eohippus was from horse. This trend continues till we get to the end, where horse is similar to Equus (all 8 known species). In general, the differences between each step in the lineage is less than the difference between eohippus and dog, and this demonstrates that "something" like a dog 55 million years ago can, step by step, by the dual process of • changes in hereditary traits in populations from generation to generation ... ... become something very like a horse ... or any one of the other branches of this lineage ... or it could have stayed an eohippus. Of course I expect cognitive dissonance to have taken over before reaching this conclusion, and the responses will either be strong denial of reality, with attempts to change the subject, or an absolute silence from creationists. Enjoy. Edited by RAZD, : simplified (honest) Edited by RAZD, : ... Edited by RAZD, : clarity Edited by RAZD, : time for bed Edited by RAZD, : revised end comparison metric to be %difference Edited by RAZD, : fixed repetiton Edited by RAZD, : . by our ability to understand Rebel American Zen Deist ... to learn ... to think ... to live ... to laugh ... to share. • • • Join the effort to solve medical problems, AIDS/HIV, Cancer and more with Team EvC! (click) • • •
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RAZD Member Posts: 12010 From: the other end of the sidewalk Registered: Member Rating: 3.8 |
From Transitional Fossils FAQ by Kathleen Hunt: quote:(Nice list of transitional fossils btw) That gives us four (4) more (transitional\intermediate) fossils to work with and even more archaic traits to include in teeth, nails and bones. In Message 169 on the "scientific theories taught as factual" thread ICANT complains about the artist rendering of phenacodus on the OP (Message 1):
Even the best renderings are, of course, based on some guesses, as well as on the actual skeleton and known muscle\tendon\etc patterns (to be as accurate as possible), while coloration is based wholly on the artists imagination. They are not intended to deceive but to exemplify, act as an analogy if you will. I chose the rendering shown (from several different ones) that I thought looked most horse-like and plain to minimize this effect. We do know what the skeletons look like, and we can compare those skeletons to the skeletons of modern animals and other fossils, we can see the hereditary traits that are common from one to another. This is what the skeleton of phenocodus (Phenacodus resartus)looks like:
Just for reference, here are the dog and eohippus again:
Dog Skeleton, by Cheryl R. Dhein, Washington State University
Now, are these critters similar or not? This is what a horse skeleton looks like:
(Also see Horse skeleton from the same source as the cat, fox, dog and wolf in the OP.) Does that look like any of the critters above? Again from Message 1: quote: We still don't have any answers from the creo-crowd. We can easily add to the list: (5) or the difference between chimp and human? If a tree falls in the forest is it evidence for evolution? Enjoy. Edited by RAZD, : format Edited by RAZD, : added horse skeleton url Edited by RAZD, : . by our ability to understand Rebel American Zen Deist ... to learn ... to think ... to live ... to laugh ... to share. • • • Join the effort to solve medical problems, AIDS/HIV, Cancer and more with Team EvC! (click) • • •
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RAZD Member Posts: 12010 From: the other end of the sidewalk Registered: Member Rating: 3.8 |
You mean from an agnostic skeptic point of view? Or based on scientific theory\evidence point of view? On way to find out is to ask your questions or state your objections. Note that my point of view is based on my personal interpretation of evolution as laid out on Evolution and the BIG LIE, summarized in Message 89 of that thread: quote: So if you want to discuss those aspects of my point of view, please reply on that topic, so this one can address macroevolution issues - specifically on what happens after speciation has occurred.
It is designed for creationists to explain the problems they have with "macro"evolution in general and to get some working definition of the amount of change needed to qualify. In that regard it is designed for people that don't have a clear concept of what macroevolution is and think there is something else to the process of evolution than the change in hereditary traits in populations from generation to generation. Do you have a process that you want to discuss for macroevolutionary change that occurs after speciation? Enjoy ps - as you are new, some tips (in case you haven't already figured it out): type [qs]quotes are easy[/qs] and it becomes:
or type [quote]quotes are easy[/quote] and it becomes: quote: also check out (help) links on any formating questions when in the reply window. Go to Forum Proposed New Topics to post new topics. You can also set that cute smiley as your icon :D. Edited by RAZD, : . by our ability to understand Rebel American Zen Deist ... to learn ... to think ... to live ... to laugh ... to share. • • • Join the effort to solve medical problems, AIDS/HIV, Cancer and more with Team EvC! (click) • • •
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RAZD Member Posts: 12010 From: the other end of the sidewalk Registered: Member Rating: 3.8 |
So what are they?
So you are done wasting time and bandwidth on this thread then? Excellent, the rest of us can get back to the topic then, the questions that creationists need to answer: (1) If your definition of macroevolution is different from evolutionary biology what is it? Enjoy. Edited by RAZD, : yellow text Edited by RAZD, : use peek to see hidden comments. Edited by RAZD, : . Edited by RAZD, : . by our ability to understand Rebel American Zen Deist ... to learn ... to think ... to live ... to laugh ... to share. • • • Join the effort to solve medical problems, AIDS/HIV, Cancer and more with Team EvC! (click) • • •
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RAZD Member Posts: 12010 From: the other end of the sidewalk Registered: Member Rating: 3.8 |
:eek: Now you have a choice:
Personally I hope you take the first alternative. If you take the second, please don't blame me if I just don't see any need to respond further to anything that does not address the topic. Enjoy. Edited by RAZD, : empty victory Edited by RAZD, : . by our ability to understand Rebel American Zen Deist ... to learn ... to think ... to live ... to laugh ... to share. • • • Join the effort to solve medical problems, AIDS/HIV, Cancer and more with Team EvC! (click) • • •
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RAZD Member Posts: 12010 From: the other end of the sidewalk Registered: Member Rating: 3.8 |
Do you mean this: cancer survivers? Pretty sad way to make an argument. It amazes me the depths some people will sink to in order to avoid discussing the topic.
Actually I would prefer ThreeDogs would attack the topic with as much as he\she can throw at it, rather than hide behind implications of some hidden agenda.
Maybe it's a problem with facing reality, something I do not have a problem with, however much you would like to imply otherwise. Now that we have reached a nadir in personal attacks, anyone care to try addressing the topic? Enjoy. Edited by RAZD, : . by our ability to understand Rebel American Zen Deist ... to learn ... to think ... to live ... to laugh ... to share. • • • Join the effort to solve medical problems, AIDS/HIV, Cancer and more with Team EvC! (click) • • •
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RAZD Member Posts: 12010 From: the other end of the sidewalk Registered: Member Rating: 3.8 |
When you reach two conclusions from the same information that are contradictory, then it is your understanding that is faulty. Perhaps the reality is that I fully expect creationists to be able to discuss the topic intelligently. Care to find out? Enjoy. Edited by RAZD, : . by our ability to understand Rebel American Zen Deist ... to learn ... to think ... to live ... to laugh ... to share. • • • Join the effort to solve medical problems, AIDS/HIV, Cancer and more with Team EvC! (click) • • •
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RAZD Member Posts: 12010 From: the other end of the sidewalk Registered: Member Rating: 3.8 |
Last post by someone else that addressed the topic was Message 13 by Beretta. Enjoy. Edited by RAZD, : last Edited by RAZD, : . by our ability to understand Rebel American Zen Deist ... to learn ... to think ... to live ... to laugh ... to share. • • • Join the effort to solve medical problems, AIDS/HIV, Cancer and more with Team EvC! (click) • • •
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