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Comments by "" (@jmitterii2) on "Five fingers of evolution - Paul Andersen" video.
When Brazeau and Ahlberg measured this bone in Panderichthys, they discovered it was much shorter than in earlier fish. It also was not directly connected to the jaw joint. It appeared to be in the middle of moving to a different part of the skull where it would become an ear bone -- a migration that would take tens of millions of years to complete.
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Ya, I'm going to far back to where the odd jaw bone in amphibians and reptiles originally came from. I'm skipping too many steps in the process. The paper from the two I mentioned go way back from fish to tetrapod transition-- then they align with what you're saying and has much more papers forming a consensus. I didn't realize the paper I described has no really follow up either way. I just googled it LOL! Because I was curious about the person's question too and reported what I googled LOL!
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Really you should look this up online. This subject goes into lots of stuff like laws, hypotheses, various types theories, theorems, models, etc. Theories can be much more useful than a simple law which is used in theories often called postulates.It is a series of postulates (laws) to provide an explanation of the observed laws-- useful in prediction making with variable conditions. A law can't cope with varying conditions or attempt to explain how the condition causes the observation.
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"This stage sets up the skull and makes it possible for this region to be modified into a middle ear. The interesting thing is that at this point it appears to have nothing to do with hearing"
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First one is a mystery. Only ideas and some hypotheses being tested. Some have show promising, meaning evidence is showing some hypotheses to be correct, but still need more testing. As for coincidental perfect conditions on earth is an illusion. Earth isn't perfect, in fact some of the non-ideal conditions on earth triggers evolution for even better species-- species become better "perfect" for their environment. But not perfect. Even you're "good" book says we're not perfect.
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Paleontologists Martin Brazeau and Per Ahlberg of Uppsala University in Sweden. I found an online information from Discover Magazine with title Origin of the Origin Of The Ear Once, it was more of a nose. It's the jaw near the gills, but the soon to to be our ear middle ear canal was used in an area for gills in the the Panderichthys because it had both lungs and gills and has other transition fossils that grew limbs. Google gill to ear. Lots of more info on their work.
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Scientific law is DESCRIPTION some phenomena provided certain conditions are met the description will not be different. Example: No relative motion, no outside force such as wind etc you drop a pencil w/ no aerodynamic lifting capabilities it will always fall down. A theory explains what is occurring. Models can be used with theories, but not always. Models provide usable abstract logic media to utilize a theory in predicting outcomes. Theories may be modified over time by evidence.
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Review : Brazea M. D.& Ahlberg P. E.Nature, 439. 318 - 321 (2006). They present the case in which the Panderichthys. And Washington post article 2006: "Paleontologists have known for a long time that the hyomandibula -- which helps suspend the jaw in fish -- evolved into the stapes, or "stirrup bone," that helps transmit sound vibrations in the middle ear in reptiles, birds and mammals.
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Gills didn't evolve into lungs. Gills mutated into the middle ear bones-- transition fossil Panderichthys. The lung evolved from the esophagus and other digestive track of fish later evolving swim bladders, then adding complex lungs. Amphibians and other species developed thin skin to use in absorbing gases- respiration of bull frog via skin is 80% and 20% lung. Human its 98% lung and 2% skin respiration.
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Its 2006 new in that I couldn't find for or against papers. Just some evidence to what happened to gills and transition from water to land animal. This information is available. It was pulled out of my behind its widely publicized. You keep bringing up the mammal formation. This goes back to earliest tetrapods 300 million years ago going back in evolution further than reptiles to mammal transition. It explains where the extra bones in the jaw of reptiles came from and middle ear canal came from.
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