When Whales Walked The Earth

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Last night I watched a to hour special on the Science Channel.

It talked about how whales were doglike mammals tens of millions of years ago, and how they slowly changed their limbs to flippers, and became aquatic mammals.

It also talked about birds, elephants, and alligators.

Of course, birds are the descendants of dinosaurs. But they explained how feathers were used to regulate heat, and how wings slowly were used for gliding and then flight. And how originally there were only a few species of dinosaur that became birds, and now there are ten thousand species around the world.

Elephants originally were in almost every country, and went from hundreds of species to only three remaining. It showed how poachers killing elephants for their tusks has forced natural selection to produce elephants with much smaller tusks..or none at all.

Alligators and crocodiles used to be much larger and far more species. After the meteor hit 65 million years ago, the only species that survived were the smaller crocodiles that lived a partly aquatic life.

The special explained how genetic testing gave the common ancestors of all these animals, and helped put the fossils found in the correct evolutionary order.

Very enlightening.

If you're interested, the title is When Whales Walked The Earth I'm guessing it's available several places online.
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  • Profile picture of the author Enfusia
    By your title and knowing you I suspected a post about the new obesity levels in America or some such.
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    • Profile picture of the author lanfear63
      Originally Posted by Enfusia View Post

      By your title and knowing you I suspected a post about the new obesity levels in America or some such.
      We all know of one Whale that still walks the Earth.
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  • Profile picture of the author Jeffery
    Originally Posted by Claude Whitacre View Post

    Last night I watched a to hour special on the Science Channel.

    It talked about how whales were doglike mammals tens of millions of years ago, and how they slowly changed their limbs to flippers, and became aquatic mammals.
    One can only imagine the length of the dog leash.

    Originally Posted by Claude Whitacre View Post

    It also talked about birds, elephants, and alligators.

    Of course, birds are the descendants of dinosaurs. But they explained how feathers were used to regulate heat, and how wings slowly were used for gliding and then flight. And how originally there were only a few species of dinosaur that became birds, and now there are ten thousand species around the world.
    Understandably, there were not that many dinosaurs when catastrophes wiped them out. Thus not too many species? Maybe only three species of dinosaurs survived.

    Originally Posted by Claude Whitacre View Post

    Elephants originally were in almost every country, and went from hundreds of species to only three remaining. It showed how poachers killing elephants for their tusks has forced natural selection to produce elephants with much smaller tusks..or none at all.
    The poacher problem will be solved when natural selection finally accepts article two and the elephants arm themselves!

    Originally Posted by Claude Whitacre View Post

    Alligators and crocodiles used to be much larger and far more species. After the meteor hit 65 million years ago, the only species that survived were the smaller crocodiles that lived a partly aquatic life.
    Thank goodness for that otherwise wallets, belts, etc. would not exist.

    Originally Posted by Claude Whitacre View Post

    The special explained how genetic testing gave the common ancestors of all these animals, and helped put the fossils found in the correct evolutionary order.

    Very enlightening.

    If you're interested, the title is When Whales Walked The Earth I'm guessing it's available several places online.
    Yes, thank you Claude, I am interested and will follow it.
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    • Profile picture of the author tagiscom
      Originally Posted by Jeffery View Post


      Yes, thank you Claude, I am interested and will follow it.
      I am waiting for the movie, "When Whales Collide".

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      • Profile picture of the author Dan Riffle
        Originally Posted by tagiscom View Post

        I am waiting for the movie, "When Whales Collide".

        That's just a home video of Claude repeatedly charging into a mirror.
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        • Profile picture of the author tagiscom
          Originally Posted by Dan Riffle View Post

          That's just a home video of Claude repeatedly charging into a mirror.
          Charging into a Magic Mirror!

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  • Profile picture of the author Kurt
    Originally Posted by Claude Whitacre View Post

    Last night I watched a to hour special on the Science Channel.

    It talked about how whales were doglike mammals tens of millions of years ago, and how they slowly changed their limbs to flippers, and became aquatic mammals.

    It also talked about birds, elephants, and alligators.

    Of course, birds are the descendants of dinosaurs. But they explained how feathers were used to regulate heat, and how wings slowly were used for gliding and then flight. And how originally there were only a few species of dinosaur that became birds, and now there are ten thousand species around the world.

    Elephants originally were in almost every country, and went from hundreds of species to only three remaining. It showed how poachers killing elephants for their tusks has forced natural selection to produce elephants with much smaller tusks..or none at all.

    Alligators and crocodiles used to be much larger and far more species. After the meteor hit 65 million years ago, the only species that survived were the smaller crocodiles that lived a partly aquatic life.

    The special explained how genetic testing gave the common ancestors of all these animals, and helped put the fossils found in the correct evolutionary order.

    Very enlightening.

    If you're interested, the title is When Whales Walked The Earth I'm guessing it's available several places online.
    I didn't see the show, but I always found the evolution of whales to be really interesting. First they moved from the ocean to land, then back again.

    On another science documentary, it was shown how some researchers took samples around the skeletons of dinosaurs in fossils and could determine the color of some dinosaur feathers based on the chemical analysis.
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  • Profile picture of the author whateverpedia
    Originally Posted by Claude Whitacre View Post

    It talked about how whales were doglike mammals tens of millions of years ago, and how they slowly changed their limbs to flippers, and became aquatic mammals.
    Hmmm. The general consensus (I thought) was that all life started out as aquatic and when the transition to land was made flippers evolved into legs.
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    • Profile picture of the author Claude Whitacre
      Originally Posted by whateverpedia View Post

      Hmmm. The general consensus (I thought) was that all life started out as aquatic and when the transition to land was made flippers evolved into legs.
      Nope. All life was aquatic, and then amphibians laid their eggs on land. And some adapted to land.

      But some land animals went back to the water. You can tell because the flippers have all the bones of arms and legs...even the finger bones. Flippers evolved from legs.

      Mammals all evolved on land..and some went back into the water. If they have lungs, they used to be on land.
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  • Profile picture of the author Odahh
    I watched the program a few days ago very interesting but also confirms why I am not worried about global warming nor do I think the human race will get to 9 or 10 billion people

    What fifty percent of the earth species have been lost in the last. Hundred years destruction and restructuring of the environment on every continent with heavy fishing of the oceans .

    Most humans are alive right now because we are very good at turning oil into food but that has deminishing returns

    How long before the earth cannot support human civilization or the cancer that human civilization acts like
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    • Profile picture of the author CottonC
      Just humanity destroys other species to fill all the empty places by itself.
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