ornitholestes
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Post by ornitholestes on Jul 5, 2014 12:29:21 GMT
I have heard about a discovered T-Rex specimen named UCMP 137538 and it is believed to have been about 15 meters long. This isn't really sure but I kind of believe it. First of all I WANT to believe and second there are extreme cases of humans (for example being 120 years old or being 2,7 meters tall). Why wouldn't this be an extreme case of Tyrannosaurus Rex? Just by fanboys. The actual (maximum) result you get using the phalanx is 14.4m, but that is under the assumption that both the referral is correct and the animal’s feet were proportioned like sue’s. I wouldn’t have much of a problem with the latter assumption, since I think variation in relative foot size is likely ontogenetic. But I have got my doubts regarding the assignment (which does not base on diagnostic characters), possily it’s just very robust, perhaps even pathological, and that’s all… Accordingly, credible sources have not produced those titanic estimates.
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jurassicjohn
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im the next spielberg dont believe me, good
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Post by jurassicjohn on Aug 2, 2014 0:45:20 GMT
Im pretty sure 40-45 feet is as long as your average trex is going to get. But if science has tought me anything its that theres allways a special case. If there are humans over 8 feet tall im sure theres a feq trexes out there that can be as big as 50 feet.
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Post by spinosaurus1 on Aug 2, 2014 4:04:35 GMT
that's way too much of an assumption. our largest specimen, FMNH PR 2081, barely exceeds 12 meters. 50 feet is a huge increase even by freak specimen standards. at most, a particularly large tyrannosaurus would most likely be around 13 meters.
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jurassicjohn
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im the next spielberg dont believe me, good
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Post by jurassicjohn on Aug 2, 2014 4:23:35 GMT
Yeah it most likely doesnt exist but that doesnt mean it absolutely doesnt. When it comes to dinosaurs weve barely scratched the surface. Even when it comes to trex. People are allways finding new things so im pretty sure the possability of a 50 foot super rex is out there.
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Post by spinosaurus1 on Aug 2, 2014 4:43:21 GMT
tyrannosaurus is one of the few theropods that have allowed scientist to make distinctive averaging sizes of their species. their averaging weight is about 6 tons. FMNH PR 2081 was already a very large individual being 7- 8 tons and 12.3 meters long. 15 meters is far too high to say conclusively right now. 13 meters is a lot more likely claim to view an above average tyrannosaurus.
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ornitholestes
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Post by ornitholestes on Aug 2, 2014 21:24:07 GMT
We literally don’t know the slightest bit of any of this.
However, 40-45ft for an average rex is a stretch. Of course, most dinosaurs were still growing at the time of their death, but in quite a bunch of T. rex specimens our largest one is about 40ft long. That’s probably the only one of such old age, meaning had others lived that long they could have reached similar size, but what are we going to do about that, argue that for each and every specimen in each and every dinosaur ever discovered? How large do you guys think Argentinosaurus got if we do that?
The problem inherent to this (in fac tthe point about this thread) is that it reduces the discussion of dinosaur size ad absurdum by leading us to hypothesize about average and maximum sizes in an ontogenic state very rarely reached and even more rarely represented on the fossil record–full osteological maturity, i.e. senescence.
The best thing is arguably to take the average of (ecologically and socially) adult (sexually mature or, differently expressed, non-subadult non-juvenile non-hatchlings) specimens, because that’s a part of the population we usually find represented in our samples. In question, we should always stick to what we have got.
This is different from mammals, which usually only behave adult and fill adult niches once they have reached or closely approached being fully grown (you should have seen my classmates a few years ago…), and tend to more frequently get fully grown too (my classmates are another good example, although one could argue that most didn’t make it to high school…).
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