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Remains of gigantic flying reptiles found in Argentina

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  • #16
    I found this tidbit, but it really doesn't answer its own question (unless it's in the video, which I can't access right now)

    https://www.cbc.ca/radio/quirks/july...head-1.4744856

    Why do predatory dinosaurs have eyes on the sides of their head?

    This week's question comes to us from Graham Richard from Haida Gwaii, who asks the following:

    Eye orientation can reveal a lot about the niche terrestrial vertebrates occupy. Eyes of predators like mountain lions and pine martens have forward-facing eyes, whereas herbivores like Sitka deer or chipmunks tend to have eyes that are oriented temporally. This provides predators with greater depth-perception for pouncing on food, and gives prey a wider view of the landscape to survey the many dangers that may lurk just beyond their view.

    Richard wants to know why predatory dinosaurs appear to have eyes on the sides of their head?

    Franç​ois Therrien, the Curator of Dinosaur Palaeoecology at The Royal Tyrrell Museum in Drumheller, Alberta, says that most meat-eating dinosaurs known as theropods, had laterally positioned eyes, but not all of them. Having eyes on the sides of their heads resulted in a limited amount of depth perception, similar to pigeons and crocodiles today. This was not ideal for locating prey. But theropods, including tyranosaurs such as the famous T-rex, had forward-facing eyes. This gave them a high degree of binocular field of view. This means that tyrannosaurs would have had excellent depth perception to estimate the distance to prey and the timing of their attack. Their vision was similar to today's falcon. It also means that T-rex would have been able to detect prey even if it stood still against the background. So Jurassic Park got it wrong! Smaller theropods, like Velociraptor and Troodon, had even better depth perception than T-rex. Their vision was similar to that of modern owls.
    "You should just assume going forward that if I am ever wrong it is a typo" - Backup
    "
    Reality simply does not change based upon consensus or desire." - rogue

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    • #17
      Originally posted by Ronson View Post
      I found this tidbit, but it really doesn't answer its own question (unless it's in the video, which I can't access right now)

      https://www.cbc.ca/radio/quirks/july...head-1.4744856

      Why do predatory dinosaurs have eyes on the sides of their head?

      This week's question comes to us from Graham Richard from Haida Gwaii, who asks the following:

      Eye orientation can reveal a lot about the niche terrestrial vertebrates occupy. Eyes of predators like mountain lions and pine martens have forward-facing eyes, whereas herbivores like Sitka deer or chipmunks tend to have eyes that are oriented temporally. This provides predators with greater depth-perception for pouncing on food, and gives prey a wider view of the landscape to survey the many dangers that may lurk just beyond their view.

      Richard wants to know why predatory dinosaurs appear to have eyes on the sides of their head?

      Franç​ois Therrien, the Curator of Dinosaur Palaeoecology at The Royal Tyrrell Museum in Drumheller, Alberta, says that most meat-eating dinosaurs known as theropods, had laterally positioned eyes, but not all of them. Having eyes on the sides of their heads resulted in a limited amount of depth perception, similar to pigeons and crocodiles today. This was not ideal for locating prey. But theropods, including tyranosaurs such as the famous T-rex, had forward-facing eyes. This gave them a high degree of binocular field of view. This means that tyrannosaurs would have had excellent depth perception to estimate the distance to prey and the timing of their attack. Their vision was similar to today's falcon. It also means that T-rex would have been able to detect prey even if it stood still against the background. So Jurassic Park got it wrong! Smaller theropods, like Velociraptor and Troodon, had even better depth perception than T-rex. Their vision was similar to that of modern owls.
      Looks like confirmation of my previous post

      I'm always still in trouble again

      "You're by far the worst poster on TWeb" and "TWeb's biggest liar" --starlight (the guy who says Stalin was a right-winger)
      "Overall I would rate the withdrawal from Afghanistan as by far the best thing Biden's done" --Starlight
      "Of course, human life begins at fertilization that’s not the argument." --Tassman

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      • #18
        Originally posted by rogue06 View Post
        Looks like confirmation of my previous post
        I think they plagiarized you.
        "You should just assume going forward that if I am ever wrong it is a typo" - Backup
        "
        Reality simply does not change based upon consensus or desire." - rogue

        Comment


        • #19
          Originally posted by Ronson View Post

          I think they plagiarized you.
          I'm sure they wrote it before yesterday.

          It's just that scene is a natural reference in any discussion about dinosaur -- particularly carnivores -- vision.

          I'm always still in trouble again

          "You're by far the worst poster on TWeb" and "TWeb's biggest liar" --starlight (the guy who says Stalin was a right-winger)
          "Overall I would rate the withdrawal from Afghanistan as by far the best thing Biden's done" --Starlight
          "Of course, human life begins at fertilization that’s not the argument." --Tassman

          Comment


          • #20
            Originally posted by Ronson View Post
            I found this tidbit, but it really doesn't answer its own question (unless it's in the video, which I can't access right now)

            https://www.cbc.ca/radio/quirks/july...head-1.4744856

            Why do predatory dinosaurs have eyes on the sides of their head?

            This week's question comes to us from Graham Richard from Haida Gwaii, who asks the following:

            Eye orientation can reveal a lot about the niche terrestrial vertebrates occupy. Eyes of predators like mountain lions and pine martens have forward-facing eyes, whereas herbivores like Sitka deer or chipmunks tend to have eyes that are oriented temporally. This provides predators with greater depth-perception for pouncing on food, and gives prey a wider view of the landscape to survey the many dangers that may lurk just beyond their view.

            Richard wants to know why predatory dinosaurs appear to have eyes on the sides of their head?

            Franç​ois Therrien, the Curator of Dinosaur Palaeoecology at The Royal Tyrrell Museum in Drumheller, Alberta, says that most meat-eating dinosaurs known as theropods, had laterally positioned eyes, but not all of them. Having eyes on the sides of their heads resulted in a limited amount of depth perception, similar to pigeons and crocodiles today. This was not ideal for locating prey. But theropods, including tyranosaurs such as the famous T-rex, had forward-facing eyes. This gave them a high degree of binocular field of view. This means that tyrannosaurs would have had excellent depth perception to estimate the distance to prey and the timing of their attack. Their vision was similar to today's falcon. It also means that T-rex would have been able to detect prey even if it stood still against the background. So Jurassic Park got it wrong! Smaller theropods, like Velociraptor and Troodon, had even better depth perception than T-rex. Their vision was similar to that of modern owls.
            Near as I can tell, birds (for the most part) don't get as much advantage from a broad 3D field as they do from their most common 320 degree field of sight. If anything of interest shows, they can turn their heads to isolate it properly for 3D viewing, and usually tracking is done by turning the head to keep the object in centre field anyway. It doesn't seem that dinosaurs would be disadvantaged overly by eyes on the sides.
            I'd hate to think how much extra processing power needs to be devoted to keeping all the input properly sorted though,
            1Cor 15:34 εκνηψατε δικαιως και μη αμαρτανετε αγνωσιαν γαρ θεου τινες εχουσιν προς εντροπην υμιν λεγω
            Come to your senses as you ought and stop sinning; for I say to your shame, there are some who know not God.
            .
            "It is not divine truth that makes the man seem more innocent in what is equally sinful, but human wrong-headedness." AUGUSTINE: re adultery

            "The synoptic gospels claim that Jesus was crucified on the 15th day of Nisan and buried on the 14th day of Nisan:" Majority Consensus

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            • #21
              Still looks like a giant chicken with overly long wings. Maybe Tyrannosaurus rex was actually a chicken farmer...


              On a slightly more serious note, that graphic in the OP looks like a chicken skull - yes, really. (look it up - this computer hates downloading anything).

              I are confuzelled - the velociraptors have feathers but the pterosaurs have bat wings and bird skulls?
              "He is no fool who gives what he cannot keep to gain that which he cannot lose." - Jim Elliot

              "Forgiveness is the way of love." Gary Chapman

              My Personal Blog

              My Novella blog (Current Novella Begins on 7/25/14)

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              • #22
                Originally posted by tabibito View Post

                Near as I can tell, birds (for the most part) don't get as much advantage from a broad 3D field as they do from their most common 320 degree field of sight. If anything of interest shows, they can turn their heads to isolate it properly for 3D viewing, and usually tracking is done by turning the head to keep the object in centre field anyway. It doesn't seem that dinosaurs would be disadvantaged overly by eyes on the sides.
                I'd hate to think how much extra processing power needs to be devoted to keeping all the input properly sorted though,
                Well, if they aren't overly social, they'd have room left over from the communications side. That and being a glider lessens the 'figuring out how to stay airborn' part.
                "He is no fool who gives what he cannot keep to gain that which he cannot lose." - Jim Elliot

                "Forgiveness is the way of love." Gary Chapman

                My Personal Blog

                My Novella blog (Current Novella Begins on 7/25/14)

                Quill Sword

                Comment


                • #23
                  Originally posted by Teallaura View Post
                  Still looks like a giant chicken with overly long wings. Maybe Tyrannosaurus rex was actually a chicken farmer...


                  On a slightly more serious note, that graphic in the OP looks like a chicken skull - yes, really. (look it up - this computer hates downloading anything).

                  I are confuzelled - the velociraptors have feathers but the pterosaurs have bat wings and bird skulls?
                  Chicken eyes, however, are substantial in relation to its head.
                  "You should just assume going forward that if I am ever wrong it is a typo" - Backup
                  "
                  Reality simply does not change based upon consensus or desire." - rogue

                  Comment


                  • #24
                    Originally posted by Teallaura View Post
                    Still looks like a giant chicken with overly long wings. Maybe Tyrannosaurus rex was actually a chicken farmer...


                    On a slightly more serious note, that graphic in the OP looks like a chicken skull - yes, really. (look it up - this computer hates downloading anything).

                    I are confuzelled - the velociraptors have feathers but the pterosaurs have bat wings and bird skulls?
                    There are a few differences, of course, as well as the wing membrane being structurally very different than that of a bat.

                    I'm always still in trouble again

                    "You're by far the worst poster on TWeb" and "TWeb's biggest liar" --starlight (the guy who says Stalin was a right-winger)
                    "Overall I would rate the withdrawal from Afghanistan as by far the best thing Biden's done" --Starlight
                    "Of course, human life begins at fertilization that’s not the argument." --Tassman

                    Comment


                    • #25
                      Originally posted by tabibito View Post

                      Near as I can tell, birds (for the most part) don't get as much advantage from a broad 3D field as they do from their most common 320 degree field of sight. If anything of interest shows, they can turn their heads to isolate it properly for 3D viewing, and usually tracking is done by turning the head to keep the object in centre field anyway. It doesn't seem that dinosaurs would be disadvantaged overly by eyes on the sides.
                      I'd hate to think how much extra processing power needs to be devoted to keeping all the input properly sorted though,
                      My objection is how something depicted above (assuming it to be a predator) would evolve. Small eyes, placement more for optimal peripheral vision, is not something I would expect from this large of a predator. Perhaps if it was slow and spent most of its time clomping around on the ground scavenging, then it needed to keep an eye out for fast predators. Maybe.
                      "You should just assume going forward that if I am ever wrong it is a typo" - Backup
                      "
                      Reality simply does not change based upon consensus or desire." - rogue

                      Comment

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