Some long spine remains of Spino belongs to a subadult....A SUBADULT. The actual adult spinosaurus fossil we discovered was a lower jaw.
Whats wrong with dinosaur reconstruction?
- Thread starter DariusAmurdarja
- Start date
i would change my opinion if the other arguments are good enough. For me...they are not. So why should i change it? It looks similar to a Bison.
I thought one of the theories behind the sail on the spino and things like the stego's plates was thermoregulation. A way of regulating heat absorption and dissipation, a way to help them thermo-regulate their metabolism. Unless that's an old theory and Dino's are now being considered definitely warm blooded. Currently my understanding is with the exception of birds the only thing that could be remotely related to Dino's are reptiles and as far as I know there's only one that is considered warm blooded in the true sense of the word that's the leather backed sea turtle. So can anyone tell me if scientists have gone in another direction and Dino's are considered warm blooded? I'm genuinely asking as I wasn't aware of a change like that and enjoy learning new things.
Also back to the point that Darius made as far as an animal breaking it's back by rolling over, I don't think that's necessarily true. The spines are extensions of their spine, but wouldn't house their primary nervous system. Sure there's nerves in there and blood flow, but their structure is less sound than the actual spine. So if an animal did fall the spines would give way before the spine did under it's own weight in my opinion. It's the same principal behind any structure the weakest part would break first. Now if the Spino was lifted and dropped flat on it's back, then perhaps the back would break due to the tensile strength of bones under different pressures. For instance human bones have the tensile strength of steel, but shatter under impact. Meaning it's as hard to crush healthy bone as it is to crush steel, but an impact to a human bone causes it shatter under considerable less force than steel. If what I'm hypothesizing is true that their bones are similar to ours than the spines would give rather than the spine itself. Also under the same conditions a human would break his back(being lifted a considerable height and being dropped flat on his back) as what I'm proposing for the Spino. So it's not so far off as a natural defect as your claiming, it's a common weakness in animals with vertebrates.
I'm no expert on the subject, but have a passing interest in Dino's and read what I can. I was hesitant to get involved in this thread as I thought perhaps it would be beyond my level of understanding in this area. Reading through this thread though the conjecture here seems to be more theoretical than based on published finding or theories, so I figured why not throw my own novice theory out there. Feel free to counter my points, I'm very open to being educated. I always look to broaden my horizons and would appreciate the feed back.
Also back to the point that Darius made as far as an animal breaking it's back by rolling over, I don't think that's necessarily true. The spines are extensions of their spine, but wouldn't house their primary nervous system. Sure there's nerves in there and blood flow, but their structure is less sound than the actual spine. So if an animal did fall the spines would give way before the spine did under it's own weight in my opinion. It's the same principal behind any structure the weakest part would break first. Now if the Spino was lifted and dropped flat on it's back, then perhaps the back would break due to the tensile strength of bones under different pressures. For instance human bones have the tensile strength of steel, but shatter under impact. Meaning it's as hard to crush healthy bone as it is to crush steel, but an impact to a human bone causes it shatter under considerable less force than steel. If what I'm hypothesizing is true that their bones are similar to ours than the spines would give rather than the spine itself. Also under the same conditions a human would break his back(being lifted a considerable height and being dropped flat on his back) as what I'm proposing for the Spino. So it's not so far off as a natural defect as your claiming, it's a common weakness in animals with vertebrates.
I'm no expert on the subject, but have a passing interest in Dino's and read what I can. I was hesitant to get involved in this thread as I thought perhaps it would be beyond my level of understanding in this area. Reading through this thread though the conjecture here seems to be more theoretical than based on published finding or theories, so I figured why not throw my own novice theory out there. Feel free to counter my points, I'm very open to being educated. I always look to broaden my horizons and would appreciate the feed back.
Not joining any one here, just pointing out some stuff. Not one peer reviewed article/journal or any citing has been done, first major flaw of a scientific conversation. Secondly the only facts I've seen is it slightly resembles a bison spine, so it must have the same structure of a herbivorous mammal(lol), all predators scavenge(not true, cheetah only eats what it kills, and I'm sure many others do this) camels hold water in their hump(unless this is a recent change I'm almost positive camels only have fatty storage inside their humps which allows them to survive in the dry condition they live in with the lack of plants). Once again I have only seen opinion/theory and each one of you completely rejects the others just because you don't like their theory, but other then comparing modern MAMMALS to ancient reptiles, not one fact or source has been cited.
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I can site the most recent one I know of supporting my theory on thermo-regulation and possible display purposes. Main et al had his findings published in the April 2005 issue of Paleobiology as well as James Farlow's paper in the 1970's. He supported the idea of it being used for thermo-regulation and for display purposes. The scientific community is divided on this due to not all Stego's having these plates? So the conjecture is if it was necessary for thermo-regulation, why don't all stego's have the plates? It is how ever still considered a reasonable theory that they did use them for some form of thermo-regulation because they found evidence that large blood vessels ran through the plates, giving rise to the speculation of thermo-regulation to cool or heat the body. Similar theories also are present for the spino as well and for just about the same reasons.
Then I really dont see why you started this thread. I'm not trying to be a douche, I really cant figure it out. To ask a question? No. To start a discussion? Apparently not.
in defence of my theory that sub adult could be a male. With only fragments aside from 1 or 2 individuals we have nothing on these dinosaurs, who is to say we have not found any female specimens. my african cichlids are showing dimorphism already and some of them are only 1/3 or 1/4th grown. male deer also get their antlers as sub-adults, not big antlers but antlers nonetheless.
As long as you got the message. I will have a mod delete my comment. Glad to see you back on track
And I am glad you made a mod delete your comment. Honestly, on this forum I always try to stay calm, not insult other people or swear etc. But it really, really, pisses me off when someone says things like " All Germans are nazis" or " living in Germany and not looking german is hard. Seriously, what is wrong in the brains of people who say that? How about you stick your nose into an effing book about Germany, or come here yourself( be careful though, I'm not sure if my turkish, italian, dutch, french, croatian, albanian, macedonian etc. And german Friends would beat your behind up so hard you'd land right back in America if you talk such bs. ) and look how things really hard here before you talk such utter bs on a public forum?!
Sorry for the rant, but this is really getting on my nerves.
if you want to, just trying to educate people 
Way to derail the thread and sound oversensitive at the same time. Should've private messaged egon as we've moved on from that topic
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