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Post by dinosauria101 on Nov 22, 2019 21:36:26 GMT 5
Straight-tusked Elephant - Palaeoloxodon antiquus  prehistoric-fauna.com/image/cache/data/Palaeoloxodon-2013-738x591.jpgOrder: Proboscidea Family: Elephantidae Height: Up to 4.2 meters Mass: 11-13 tonnes, possibly up to 15 tonnes Diet: Plants and foliage Age and Location: 781,000-50,000 years ago, Pleistocene epoch, Europe Killing apparatus: Tusks One of the largest elephant species ever. Thought to be closely related to modern elephants. Giraffatitan brancai  vignette.wikia.nocookie.net/dinosaurs/images/a/ad/Giraffatitan.jpg/revision/latest?cb=20130217162515Order: Sauropoda Family: Brachiosauridae Length: 26 meters Mass: 30-35 tonnes Diet: Plants Age and Location: 150 million years ago, Late Jurassic, Tanzania Killing apparatus: Manual claws, tail slapping Very closely related to Brachiosaurus and is probably a species of it. A skeleton of this dinosaur mounted in Berlin is the tallest dinosaur skeleton in the world. |
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Post by 6f5e4d on Nov 22, 2019 21:58:14 GMT 5
Giraffatitan wins this one, as its longer and heavier than the straight-tusked elephant, and able to use its neck and tail in combat.
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Post by Infinity Blade on Nov 22, 2019 22:34:28 GMT 5
HM SII isn't the largest specimen of Giraffatitan, right?
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Post by theropod on Nov 22, 2019 23:11:02 GMT 5
No, it’s not even an adult. HM XV2 is a fibula 12.6% longer. If HM SII is 22.46 m long and 23.337 t, then XV2 is at least 25 m and 33 t
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Post by dinosauria101 on Nov 23, 2019 1:37:56 GMT 5
Well I don't know too much on Giraffatitan, but the Berlin animal is immature?
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Post by theropod on Nov 23, 2019 1:50:02 GMT 5
Of course the Berlin mount is a composite of several similar-sized skeletons, but they appear to be immature, yes. Unfused scapulocoracoids.
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denis
Junior Member
Posts: 195
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Post by denis on Nov 23, 2019 2:20:22 GMT 5
Giraffatitan would win most of the time. It will probably just stomp on Palaeoloxodon Namadicus and game over.
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Post by dinosauria101 on Nov 23, 2019 2:29:37 GMT 5
Alright, so here's a size chart I made. Elephant is very maximum of 15 tonnes and 4.2 meters shoulder height, while the Giraffatitan is the immature Berlin specimen, 23 meters total length and 30-35 tonnes. Both skeletals by Larramendi.  Yeah my money's definitely on the dinosaur here. |
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Post by Infinity Blade on Nov 23, 2019 3:01:08 GMT 5
It wouldn’t be 30-30 tonnes at 23 meters. Isometrically scaling from the Berlin specimen’s actual dimensions would give you an animal ~25 tonnes.
Although, that is an interesting size comparison if accurate.
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Post by dinosauria101 on Nov 23, 2019 3:04:19 GMT 5
Well, that's what Larramendi got with a GDI - what did you scale from?
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Post by Infinity Blade on Nov 23, 2019 3:06:10 GMT 5
The dimensions theropod gave me above. I’m interested in seeing what Asier Larramendi exactly did with his GDI.
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Post by dinosauria101 on Nov 23, 2019 3:24:16 GMT 5
From what I can tell they must've found the cubed volume then multiplied for the mass
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Post by creature386 on Nov 23, 2019 4:01:38 GMT 5
He did it the way most estimates for Giraffatitan are obtained, by first calculating a volume and then masses assuming various densities (here, he assumed 0.8-0.9 g/cm^3). Even with such a seemingly rigorous and straightforward approach (seeing how complete the specimen is), volume estimates vary, as the Wikipedia article shows. Isometric scaling from smaller length estimates to larger ones won't help us here: It's the same specimen we are talking about, so different length estimates are guaranteed to yield different proportions. And a little nitpick, the 22.46 m figure seems to be wrong: en.wikipedia.org/wiki/Giraffatitan |
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Post by dinosauria101 on Nov 23, 2019 4:12:53 GMT 5
It's 30 cm difference, not gonna make all that much of a mass difference.
On another note, anyone know the degree to which the fibula was immature? I'll make another chart with it scaled up
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Post by creature386 on Nov 23, 2019 4:18:56 GMT 5
Probably won't make a mass difference at all, as it was just a counting error. Just wanted to point it out.
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