Jdangerousdinosaur In reply to Ryanvenator [2020-04-27 13:07:51 +0000 UTC]

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mark0731 In reply to TheLizard721 [2019-03-15 18:12:13 +0000 UTC]

Rajasaurus probably wasn't that tall and heavy actually, as it was about 6.6 meters long.

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Franoys In reply to tarbano [2019-01-04 17:55:31 +0000 UTC]

Hi; Tarbosaurus specimens in general are poorly documented, keep in mind over 30 of them exist (Hurum and Sabath estimated that the number could potentially be tripled) but only a few have been partially described.

A list of some of them with very basic information exists in Hurum & Sabath 2003 (but you will only see roughly which parts of the skeleton are preserved in each individual and a vague description on their size in some cases), and Maleev 1974 described what at the time were considered different species of Tyrannosaurid, but are now considered Tarbosaurus synonims representing different ontogenic stages. From the specimens described in Maleev 1974, a body length of roughly 6 m seems to be just in between of "Gorgosaurus novojilovi" (PIN 552-2) and "Gorgosaurus lancinator" (PIN 553-1). Therefore it could be many specimens considering the amount that have been uncovered (and very likely a undescribed one), maybe if you told me what your local museum is or provided images of the specimen I would be able to help better but I'm not sure.

The largest femur reported so far is 112 cm, belonging to ZPAL MgD 107/2, the specimen is not properly described but scaling from other complete skeletons like PIN 551-2 gets you a body length of 10 m. The largest individual however seems to be known by skull remains ( PIN 551-1, the holotype of the taxon ) which has a longer skull tan that of ZPAL MgD 107/2 when reconstructed,and scaling from the more complete and better described specimens yielded a body length of 10.6 m for me. The body mass according to GDI analysis is 4.9 t (you can round it to 5 without problem). You can see the restorations of the larger specimens here: Tarbosaurus bataar adults skeletal diagrams .

Here are the links to the publications I mentioned:

Hurum & Sabbath 2003: www.app.pan.pl/archive/publish…
Maleev 1974 (original): drive.google.com/open?id=1ILuj…
Maleev 1974 (translated to english,without figures): drive.google.com/open?id=1GeBg…

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tarbano In reply to Franoys [2019-01-05 01:43:52 +0000 UTC]

Using phone, will reply soon. The cast is housed at the Museum of Dinosaurs and Ancient Cultures in Cocoa Beach, Florida, USA. Though it used to travel around as most of the museum pieces once we're traveling exhibits the owner recalled all back home. Here is an image, though is suspect it's a chimera cast.

www.thefossilforum.com/uploads…

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Franoys In reply to tarbano [2019-01-05 09:43:27 +0000 UTC]

Hello; I don't think I can tell the specimen from the picture specially considering all that was said previously, but you are likely correct. I wish you the best in your field trip. 

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kirkseven In reply to kirkseven [2018-02-19 07:43:31 +0000 UTC]

Thanks for everything!

Good luck on your future projects!

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Franoys In reply to malevouvenator [2018-02-21 10:20:34 +0000 UTC]

Muchas gracias! Me alegro de que los encuentres útiles.

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malevouvenator In reply to Franoys [2018-02-22 03:05:15 +0000 UTC]

No hay de que compa!

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Franoys In reply to Majestic-Colossus [2018-01-14 06:44:45 +0000 UTC]

My priority right now are the finals, however, I'll finish them in 10 days or so and then I'll try to upload a bunch of stuff, I really need to get to work on the Titanosaur chart now that you mentioned it.

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Franoys In reply to Dinopithecus [2017-12-02 22:23:16 +0000 UTC]

Hi Dinopithecus; the equation is from his book about Theropod dinosaurs; which is announced in the Eofauna page "Récords y curiosidades de los dinosaurios terópodos y otros dinosauromorfos".

To make use of the equation as is in the book, you need to make use of a few tables that I would need to screenshot or photograh pages of the book to share; and I'm not sure if that is a right thing to do, that's why I didn't share it in the Chilantaisaurus deviation.

He estimated the speed of Sue at 23 km/h, and that of T.rexes under 8 t in mass at around 34-35 km/h; depending on the leg length of the specimen.  I could try to build a regression from the sources listed and post it in the future for those of you that are interested.

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Dinopithecus In reply to Franoys [2017-12-04 02:00:19 +0000 UTC]

Interesting. 34-35 km/h may be plausible for a <8 tonne tyrannosaur, but going further would be pushing it. That, of course, is just my opinion.

The threshold I use for how "fishy" a Tyrannosaurus speed estimate is is the maximum speed an equivalent sized elephant can achieve. If it's faster than that speed by even a small amount, then I can roll with it. Of course, there's also a threshold where the speed estimate becomes unreasonably high). Tyrannosaurus and all other terrestrial predatory theropods were clearly far more adapted for speed than an elephant; this was something paleontologists like Greg Paul nailed back in the '80s and it could not be emphasized more. And while I know that going "it cannot possibly be true" isn't really the right way to do science, finding out that an elephant could run faster than an equal sized tyrannosaur would honestly be like finding out a carcharodontosaurid could bite harder than an equal sized tyrannosaurid; from a functional anatomical standpoint, that just wouldn't make any sense, and you'd have to put up a damn good argument for how that could be possible.

Thing is, though, I don't know how fast an adult T. rex-sized elephant would run anymore. The fastest reliably recorded speed for modern elephants is ~15 mph, but this was for an Asian elephant bull that weighed <3 tonnes (and evidently was not an adult) and was specifically selected (alongside others) for its outstanding speed. I can only imagine how much slower a mature bush elephant bull that weighs 6 tonnes, or even 8 tonnes, would be.

I digress a bit, but yeah, now you know how I feel about the whole Tyrannosaurus speed thing.

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Franoys In reply to JonaGold2000 [2017-10-16 18:26:07 +0000 UTC]

I think they are sexy.

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JonaGold2000 In reply to Franoys [2017-10-16 20:58:14 +0000 UTC]

Do they give you a bone-r? :^)

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kirkseven In reply to Phillip2001 [2017-10-09 21:34:35 +0000 UTC]

ew.

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Phillip2001 In reply to kirkseven [2017-10-10 18:25:17 +0000 UTC]

Shut up or I will take down your page using the new internet law.

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kirkseven In reply to Phillip2001 [2017-10-11 05:09:32 +0000 UTC]

Do it. I dare you.

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Phillip2001 In reply to kirkseven [2017-10-11 17:27:35 +0000 UTC]

Sure. Enjoy the lack of your deviantart page soon!!!!

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kirkseven In reply to Phillip2001 [2017-10-11 18:24:27 +0000 UTC]

I will enjoy seeing you try.

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kirkseven In reply to kirkseven [2017-10-12 18:43:29 +0000 UTC]

I see you blocked me you little fucker ⇩

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Phillip2001 In reply to kirkseven [2017-10-12 15:58:13 +0000 UTC]

Sure!! I will get your account deleted as soon as possible. Enjoy the lack of your Deviantart- account!!!!

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Franoys In reply to Phillip2001 [2017-10-09 17:18:03 +0000 UTC]

Thank you!

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Phillip2001 In reply to Franoys [2017-10-09 18:10:37 +0000 UTC]

You're very welcome dude!!!

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Franoys In reply to vasix [2017-10-07 23:24:12 +0000 UTC]

Hi, I asked Royo Torres about it in an e mail and it is under study and awaiting publication, so the information is under embargo and he couldn't tell me anything about it yet. Hopefully we will hear about it soon!

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vasix In reply to Franoys [2017-10-10 02:31:45 +0000 UTC]

Lovely, thank you!

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Franoys In reply to PaleoJoe [2017-09-05 12:22:07 +0000 UTC]

My skeletal alredy features most of the corrections they will do, the ribs are more angled backwards both in lateral and dorsal view, the scapulocoracoid is lower and more angled downwards, the knees are less flexed so the animal is alredy not sleeking/ crouching (which would be very painful for a Tyrannosaurus and not a normal posture you would see it carrying) but kind of troting, and it shows the gastralia, although I represented it very schematically and very probably made the gastral ribs too small, so perhaps I will update them to reflect their real humungous size. It won't have a big impact in the overall appereance of the animal and the size of it and it's torso, but it will be more accurate. 

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PaleoJoe In reply to Franoys [2017-09-06 00:38:04 +0000 UTC]

Sounds good.

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Franoys In reply to Majestic-Colossus [2017-08-10 22:58:52 +0000 UTC]

Perhaps

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