Tetrapod Evolution 1of5

Tetrapods are vertebrate animals having four feet, legs or leglike appendages. Amphibians, reptiles, dinosaurs/birds, and mammals are all tetrapods, and even the limbless snakes and whales are tetrapods by descent. The earliest tetrapods radiated from the Sarcopterygii, or lobe-finned fish, into air-breathing amphibians. The first tetrapods are now thought to have evolved in shallow and swampy freshwater habitats, towards the end of the Devonian, a little more than 365 million years ago.

This documentary walks through our early understanding and discoveries regarding the evolution of tetrapods. The list of known fossils possessing transitional features continues to grow.

Osteolepis, Eusthenopteron, Sterropterygion, Panderichthys, Elpistostega, Tiktaalik, Elginerpeton, Densignathus, Ventastega, Metaxygnathus, Obruchevichthys, Hynerpeton, Acanthostega, Ichthyostega, Whatcheeria, Tulerpeton, Pederpes, Greerepton, Crassigyrinus, Pholidogaster, Pteroplax, Baphetes, Balnerpeton, Dendrepton, Silvanerpeton, Proteogryinus, Eoherpeton

Every home should have the Animal Planet channel




http://www.youtube.com/view_play_list?p=05E9C5F10C1EB2B4

Category:

Education

Tags:

• evolution
• creation
• intelligent
• design
• tetrapod
• tiktaalik
• panderichthys
• acanthostega
• transitional
• fossil

[bonoboperson]

mammals are not tetrapods. we may have four limbs, but that is not the entire definition. i found on wikipedia that tetrapods are four limbed animals who LAY EGGS ADAPTED FOR LAND. since we do not lay any kind of egg, we can't lay eggs adapted for land, therefor, we are not tetrapods. we are mammals.

[djarm67]

@bonoboperson This is an inaccurate description of a tetrapod. In addition, the platypus and echidna (who are both monotremes, a subset of mammals) do lay eggs. Other mammals eggs are retained to live birth either through early development in the case of marsupial mammals or until later development in placental mammals.

[bonoboperson]

@djarm67 oops i think i got that wrong, i was refering to amniotic tetrapods. i've got this arguement with some guy about whether we evolved from amphibians. he said we evolved from amniotic tetrapods and not amphibians. while it is true that we are amniotic tetrapods, but amniotic tetrapods had to evolve from non amniotic tetrapods, right?

[djarm67]

@bonoboperson Whilst it is true that we did not evolve from "modern" amphibians, our ancestoral tetrapod line did include amphibians. Review the species with transitional features such as Tiktaalik, Acanthostega, Ichthyostega, Whatcheeria and Tulerpeton.

[webbess1]

@DarthHater100 Explore this channel more. There is a ton of evidence for evolution on it.

No one is saying humans came from monkeys. We share a common ancestor with monkeys, just like we share a common ancestor with all living things. Our common ancestor with monkeys was just relatively recent.

[DarthHater100]

@BlueBuzzards Ah, like a typical atheist, you can`t get your point across without using vulgarities. Why are you so angry? Nobody is forcing you to believe the Bible, nor does anybody force you to pay for it to be indoctrinated into your children. But evolutionists DO force their crazy beliefs to be taught to children, at tax payer expense. No one has ever seen people come from monkeys, evolution is not even science. Please give me you best piece of evidence for evolution.

[BlueBuzzards]

@DarthHater100 i wish i was as simple minded as you, but sorry, some of us arent fucking retarded and actually want to learn about the world. go back to your pretty little nursery book with the funny stories and characters and leave intelligent conversation to us big boys :)

[jerubaal3333]

Funny!!!! allmost religion revelation - one piece of stone and Vast Imagination Mutter

[rahoolbhimani]

ap bio swaggggggg

[Naturegirlishere]

yeah original tetrapods eventually evolved to lay amniotic eggs which were eggs seen in modern reptiles and amphibians. This then allowed the evolutation of dinosaurs

[alltiedup217]

@DarthHater100 darthhater100 aka shockofgod this is his troll name

[DarthHater100]

Evolution is stupid. Atheists will believe the most absurd things no matter how crazy, as long as they don't have to concede there is a God. Design is OBVIOUS, and non-believers have to keep telling themselves "there is no design, there is no design" LOL and concoct elaborate drawings and imagine wild scenarios, ALL make-believe. If you want to BELIEVE that a fish crawled out of the mud and grew legs and was the ancestor humans, that's fine, but don't call it science. Admit it's RELIGION.

[00CaptainDan00]

Highly dramatized, and somewhat missleading in its implication that evolution would be a concious act rather than a refinement by unconcious filtering.

Otherwise not bad.