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Does Eusthenopteron prove Evolution?
Eusthenopteron is a link in a chain of evidence supporting evolution. Transitional forms have been found that are elements of its development from a fish that lived entirely in the ocean to the tetrapods that walked on land. These progressive changes spanned million of years in the late Devonian, from the fish Eusthenopteron, through Tiktaalik, and Acanthostega, to the oldest known tetrapod, Ichthyostega. Eusthenopteron was fish in the ocean, but a portion of that ocean became landlocked and is now part of Pennsylvania. In Darwin's evolution there are mechanisms for development of new genetic information. One of them is described by Ilya Prigogine. Another is Lamarck's evolution (this requires a feedback loop), which is a subset of Darwin's evolution. A third is... well, I'll leave it to you to research on your own.
What was the eusthenopterons environment like?
The eusthenopteron was a prehistoric fish that had limbs. It lived in a warm, tropical environment and liked to live in still water.
What has the author Marius Arsenault written?
Marius Arsenault has written: '- Eusthenopteron foordi, a predator on Homalacanthus concinnus from the Escuminac Formation, Miguasha Quebec.'
There are not fossils of transitional forms or missing links is true or false?
False, there are many transitional forms in the fossil record. Osteolepis Eusthenopteron Panderichthys Tiktaalik Elginerpeton Obruchevichthys Ventastega Acanthostega Ichthyostega Hynerpeton Tulerpeton Pederpes Eryops Pedopenna Anchiornis Archaeopteryx Confuciusornis Ardipithecus ramidus Australopithecus afarensis Australopithecus africanus Australopithecus anamensis Australopithecus garhi Australopithecus aethiopicus Australopithecus boisei Australopithecus robustus Homo habilis Homo rudolfensis To name a few.
What are the three major areas of evidence for evolution?
The 3 major areas of evolution: homologies, fossil evidence and geographical distribution of speciesA. Homology or similarities between and across species is a key evidence for evolution. The theory goes that species that are related to each other share similarities that were derived from a common ancestor. For example, the forelimb of tetrapods: i.e. the arm of a human, flipper of a dolphin, wing of a bat, and the wing of a bird--reveal similar structures. When compared to a common ancestor such as the Eusthenopteron -- one can see that each aforementioned descendants retains some of the same ancestral characteristics.B. Fossil are remnants of organisms fro past geological times that have been encased in rocks. Through radioactive dating, scientist can determine the approximate age of the fossils. In addition, by examining each stratigraphic levels (rock layers)--scientists can make assessments that for example if an when an organism originated and died out. Comparative studies of fossil records with now-living organisms can be used to show how that organism or related ones evolved over time.C. Different species can be found in geographic regions. Some species can also be found in one region. For example, the flightless cormorant can only be found on the Galapagos Island. Other cormorants found in other regions still retain the ability to fly.
Is evolution correct?
The theory of evolution states that most living organisms share common ancestry. Charles Darwin proposed this theory 150 years ago to account for the remarkable diversity of life around the globe, and to explain apparent successions of fossils. Since Darwin's time the theory of evolution has been modified to incorporate discoveries in genetics. We now know the source of the mutations that create change, for example. We have also learned a great deal about earlier stages of life. Multicellular organisms clearly originated in a marine environment. We have fossils of fish that predate any fossils of land plants or animals. Given that fact, evolution would predict the earliest terrestrial vertebrates should be amphibians. It turns out this is what we find. Fossils of amphibious creatures like ichthyostega, eusthenopteron, acanthostega, and eogyrinus all bear remarkable resemblance to sarcopterygian lungfish of that era. One telling find was discovered by paleonotologists who predicted (on the basis of evolutionary theory) that there should be a creature with particular features in specific strata. When they searched that strata they found Tiktaalik roseae. There are hundreds of scholarly papers published in peer reviewed journals on the subject of biological evolution each and every year, and this has been the case for decades. Research into this subject is ongoing and pervasive--it is of keen interest in numerous prestigious universities around the world. Essentially no research has been conducted that casts any serious or substantial doubt on the accuracy of Darwin's theory. On that basis I am led to the conclusion the theory is essentially correct.
What fossils show the evolution of man?
Here is a short list of transitional fossils: Cladoselache tristychius ctenacanthus paleospinax spathobatis Protospinax Acanthodians cheirolepis mimia Canobius Aeduella Parasemionotus Oreochima leptolepis Osteolepis Eusthenopteron Sterropterygion tiktaalik panderichthys Elpistostege Obruchevichthys Hynerpeton Acanthostega Ichthyostega Pholidogaster Pteroplax Dendrerpeton acadianum Archegosaurus decheni Eryops megacephalus Trematops Amphibamus lyelli Doleserpeton annectens vieraella Proterogyrinus Limnosclis Tseajaia Solenodonsaurus Hylonomus Paleothyris Captorhinus Petrolacosaurus Araeoscelis Apsisaurus Claudiosaurus Planocephalosaurus Protorosaurus Prolacerta Proterosuchus Hyperodapedon Trilophosaurus Coelophysis Deinonychus Oviraptor Lisboasaurus Archeopteryx Sinornis Ambiortus Hesperornis Ichthyornis Paleothyris Protoclersydrops Clepsydrops Archaeothyris Varanops Haptodus Dimetrodon Sphenacodon Biarmosuchia Procynosuchus Dvinia Thrinaxodon Cynognathus Diademodon Proelesodon Probainognathus Exaeretodon Oligokyphus Kayentatherium Pachygenelus Diarthrognathus Adelobasileus Sinoconodon Kuehneotherium Eozostrodon Morganucodon Haldanodon Peramus Endotherium Kielantherium Aegialodon Steropodon Vincelestes Pariadens Kennalestes Cimolestes Procerberus Gypsonictops Palaechthon Purgatorius Cantius Pelycodus Amphipithecus Pondaungia Parapithecus Propliopithecus Aegyptopithecus Proconsul Limnopithecus Dryopithecus Pakicetus Nalacetus Ichthyolestes Gandakasia Ambulocetus Himalayacetus Attockicetus Remingtonocetus Dalanistes Kutchicetus Andrewsiphius Indocetus Qaisracetus Takreacetus Artiocetus Babiacetus Protocetus Pappocetus Eocetus Georgiacetus Natchitochia Dorudon Ancalacetus Zygorhiza Saghacetus Chrysocetus Gaviacetus Pontogeneus Basilosaurus Basiloterus Sahelanthropus tchadensis Orrorin tugenensis Ardipthecus ramidus Ardipithecus kadabba Australopithecus afarensis Australopithecus africanus Australopithecus anamensis Australopithecus garhi Australopithecus aethiopicus Australopithecus boisei Australopithecus robustus Australopithecus bahreghazali Homo habilis Homo rudolfensis Homo erectus.
The lack of transitional forms of organisms in the fossil record would be?
This question makes no sense, because there are plenty of transitonal fossils. So I'm just going to list some. Cladoselache tristychius ctenacanthus paleospinax spathobatis Protospinax Acanthodians cheirolepis mimia Canobius Aeduella Parasemionotus Oreochima leptolepis Osteolepis Eusthenopteron Sterropterygion tiktaalik panderichthys Elpistostege Obruchevichthys Hynerpeton Acanthostega Ichthyostega Pholidogaster Pteroplax Dendrerpeton acadianum Archegosaurus decheni Eryops megacephalus Trematops Amphibamus lyelli Doleserpeton annectens vieraella Proterogyrinus Limnosclis Tseajaia Solenodonsaurus Hylonomus Paleothyris Captorhinus Petrolacosaurus Araeoscelis Apsisaurus Claudiosaurus Planocephalosaurus Protorosaurus Prolacerta Proterosuchus Hyperodapedon Trilophosaurus Coelophysis Deinonychus Oviraptor Lisboasaurus Archeopteryx Sinornis Ambiortus Hesperornis Ichthyornis Paleothyris Protoclersydrops Clepsydrops Archaeothyris Varanops Haptodus Dimetrodon Sphenacodon Biarmosuchia Procynosuchus Dvinia Thrinaxodon Cynognathus Diademodon Proelesodon Probainognathus Exaeretodon Oligokyphus Kayentatherium Pachygenelus Diarthrognathus Adelobasileus Sinoconodon Kuehneotherium Eozostrodon Morganucodon Haldanodon Peramus Endotherium Kielantherium Aegialodon Steropodon Vincelestes Pariadens Kennalestes Cimolestes Procerberus Gypsonictops Palaechthon Purgatorius Cantius Pelycodus Amphipithecus Pondaungia Parapithecus Propliopithecus Aegyptopithecus Proconsul Limnopithecus Dryopithecus Pakicetus Nalacetus Ichthyolestes Gandakasia Ambulocetus Himalayacetus Attockicetus Remingtonocetus Dalanistes Kutchicetus Andrewsiphius Indocetus Qaisracetus Takreacetus Artiocetus Babiacetus Protocetus Pappocetus Eocetus Georgiacetus Natchitochia Dorudon Ancalacetus Zygorhiza Saghacetus Chrysocetus Gaviacetus Pontogeneus Basilosaurus Basiloterus Sahelanthropus tchadensis Orrorin tugenensis Ardipthecus ramidus Ardipithecus kadabba Australopithecus afarensis Australopithecus africanus Australopithecus anamensis Australopithecus garhi Australopithecus aethiopicus Australopithecus boisei Australopithecus robustus Australopithecus bahreghazali Homo habilis Homo rudolfensis Homo erectus Just to name a few :) (I might have spelled one or two incorrectly)
What is an evolutionary innovation associated with amphibians?
The earliest forms of amphibians evolved from lobe-finned fish in the Devonian Period, around 350 million years ago. These fish had strong, bony fins that allowed them to drag themselves on land, and some of them developed lungs for breathing air. These two adaptations were very helpful in their freshwater environments that were often stagnant and dried out. Eventually the bony fins of these fish evolved into limbs that became better suited for terrestrial locomotion over time. Early amphibians still spent most of their lives in water and always had to lay their soft eggs in water.One of the earliest and most well known ancestors of amphibians (and all tetrapods in general) is a lobe-finned fish called Eusthenopteron. Although it never actually went on land, it still had four fins with bone structures homologous to all modern tetrapods, and also had internal nostrils and enfolded enamel found on primitive labyrinthodont amphibians.Another important transitional form is Tiktaalik, who is an important link in the transition between lobe-finned fish and tetrapods. By the structure of its jointed fins, which contain wrist bones, it was probably one of the first fish to crawl on land. However, it only did so under certain circumstances and still spent almost all of its time in water. It had both gills and primitive lungs, and had a flattened head shaped like that of an amphibian's.The earliest amphibians include Acanthostega and Icthyostega. Their primitive limbs contained digits, but were still poorly adapted for moving efficiently on land. Yet it was a good start, and they would be succeeded by labyrinthodonts such as Hynerpeton and Eryops, who are the ancestors of true amphibians.The first modern amphibians emerged in the Carboniferous Period and had all the adaptations necessary to make them suitable for living both in water and on land. Amphibians became the dominant terrestrial vertebrates through most of the Carboniferous until they are replaced by their descendants, the reptiles.
What problem caused biologists to believe amphibians evolved from certain fish?
The earliest forms of amphibians evolved from lobe-finned fish in the Devonian Period, around 350 million years ago. These fish had strong, bony fins that allowed them to drag themselves on land, and some of them developed lungs for breathing air. These two adaptations were very helpful in their freshwater environments that were often stagnant and dried out. Eventually the bony fins of these fish evolved into limbs that became better suited for terrestrial locomotion over time. Early amphibians still spent most of their lives in water and always had to lay their soft eggs in water.One of the earliest and most well known ancestors of amphibians (and all tetrapods in general) is a lobe-finned fish called Eusthenopteron. Although it never actually went on land, it still had four fins with bone structures homologous to all modern tetrapods, and also had internal nostrils and enfolded enamel found on primitive labyrinthodont amphibians.Another important transitional form is Tiktaalik, who is an important link in the transition between lobe-finned fish and tetrapods. By the structure of its jointed fins, which contain wrist bones, it was probably one of the first fish to crawl on land. However, it only did so under certain circumstances and still spent almost all of its time in water. It had both gills and primitive lungs, and had a flattened head shaped like that of an amphibian's.The earliest amphibians include Acanthostega and Icthyostega. Their primitive limbs contained digits, but were still poorly adapted for moving efficiently on land. Yet it was a good start, and they would be succeeded by labyrinthodonts such as Tulerpeton and Eryops, who are the ancestors of true amphibians.The first modern amphibians emerged in the Carboniferous Period and had all the adaptations necessary to make them suitable for living both in water and on land. Amphibians became the dominant terrestrial vertebrates through most of the Carboniferous until they are replaced by their descendants, the reptiles.
What are two pieces of evidence for evolution?
1.) How gasses in space diffuse, and are not affected by gravity unless there is a big chunk of matter there, or a supernova compresses the gas (never been observed). This obviouslyproves that it is likely that the 10,000,000,000,000,000,000,000 stars out there were made by random processes and chance events.2.) That (even though) mutations have only been observed being limited to small changes within a species, they somehowcreated new organs.P.S. EVERY mutation must have happened within 10,000 years, because the sun is shrinking at about 5ft. (in diameter) every minute, and anywhere above 10,000 years, and the sun would be so big, it would fry every form of life on earth. (even though scientists insist it took millions of years)
