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The teeth of Ichthyostega indicate that it ate what?
squid and fish
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 did Ichthyostega eat?
mostly fish, but also mollusks such as ammonites
Which is amphibious with seven fingers on his feet?
Ichthyostega
The teeth of Ichthyostega indicate that it ate what?
squid and fish
Which period did Ichthyostega live in?
they lived in the cretaceous period
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.
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.
How long have amphibians been on earth?
Tetrapods (early amphibians) emerged in the fossil record some time int he lower Carboniferous, around 360 million years ago. Reptiles emerged later in the carboniferous, 320-310 million years ago, and were probably the dominant terrestrial fauna by the start of the Permian, 299 million years ago. If any period in geological history could be described as the age of the amphibians, it would be the lowere-to-middle Carboniferous.
What was the first animal to have a pentadactyl limb?
This is unlikely to ever be definitively known, as the fossil record of early tetrapods is incomplete, and the vast gulf of time that separates us from them (360+ million years) compounds the problem. However, we do have some fossils, and from them it is clear that the earliest tetrapods had more than 5 toes on each foot (they were polydactylous). Acanthostega had 8, Ichthyostega had 7 and Tulerpeton had 6 - there seems to have been a trend of reduction in the number of toes over time in the tetrapod lineage. The early Anthracosaurs seem to have had 5 toes ancestrally, a trait which they might have passed on to their amniote descendants. However, it seems as though even the early tetrapods like Acanthostega were effectively five-toed, as their forward toes were combined into a single flesh-covered digit.
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 are examples Amphibians?
Some amphibians are : frogs, toads, salamanders, and newts.African bullfrog, Pyxicephalus adspersusAlligator NewtAlpine NewtAmerican BullfrogAmerican ToadAustralian Green Tree Frog (Litoria caerulea)AxolotlBlue-tailed Fire-bellied NewtBurrowing Tree FrogCaeciliansCane ToadCommon Dusky SalamanderCouch's SpadefootDumpy (White) Tree FrogDwarf WaterdogEastern ToadEmperor NewtEnsatinaEuropean Fire-bellied Toad (Bombina bombina)European Green ToadEuropean Tree FrogFire-belly ToadFire Salamander (Salamandra salamandra)Fowler's ToadGiant Marine ToadGiant SalamanderGolden MantellaGolden Poison Dart FrogGolden toad, Bufo periglenes, extinct since 1989Goliath FrogGreat crested newt, Triturus cristataGreek Stream Frog, rana graecaGreen-and-black Poison Dart FrogGreen Tree frogGrey Tree FrogHellbenderHorned ToadIberian Ribbed NewtIchthyostega, thought to be one of the earliest amphibians (Devonian)Japanese giant salamander, Andrias japonicusLeopard FrogMarbled Reed FrogMarbled SalamanderMarsh FrogMountain ChickenMudpuppy (Necturus maculosus)PacMan FrogPanamanian Golden FrogPlains Leopard FrogPig FrogPoison arrow/arrow poison frog, Dendrobates azureus, the genus Dendrobates contains very poisonous and very colorful frog species of South AmericaPuerto Rican Crested ToadRana Sylvatica (Alaskan wood frog)Red-belled NewtRed eyed Tree FrogSpring PeeperStrawberry Poison Dart FrogSurinam ToadThree-toed AmphiumaTiger SalamanderTomato FrogVietnamese Moss FrogWaxy Tree FrogWestern Lesser SirenWestern ToadWhite's Tree FrogWood FrogWyoming ToadThere are more amphibians then even humans are aware of. Scientists are still finding new species. There are many species already and depending on the area or type depends where one would find a list.There are over 6000 extant amphibian species. And note the fossil species too (like Ichthyostega).There are three groups of amphibians; frogs (including toads) or Anura, caecilians or Gymnophionaand salamanders or Caudata.
