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Post by Hatzegopteryx on Feb 16, 2014 16:25:09 GMT
Tyrannotitan chubutensis is a bit controversial when it comes to its size, so I made this thread for you guys to debate. At the upper part, FMNH PR2081 and MPEF-PV 1157 have their femurs compared. MPEF-PV 1157 has a ~140cm femur, while the Giganotosaurus carolinii holotype specimen, MUCPv-Ch1, has a ~143cm femur. MUCPv-Ch1 has a ~2% larger femur in axial length, and according to Novas et. al., 2013, both are very related. Having this in mind, we scale MPEF-PV 1157 down, having in mind that MUCPv-Ch1 is ~12.4 metres in axial length. So from scaling it, MPEF-PV 1157 is ~12.1 metres in axial length. Considering MUCPv-Ch1 is ~6800kg; 6800*(12.1/12.4)³ = 6318.296 So seeing as we got ~6.3 tonnes, we can guess it would be a bit larger than that based on the fact that Tyrannotitan chubutensis is more robust. So, in my opinion, that would give it some extra ~200kg. I say ~12.1 metres and ~6.5 tonnes for the MPEF-PV 1157 specimen, and ~6-8 tonnes for a general range for the whole species. What do you guys think?
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Post by themechabaryonyx789 on Feb 16, 2014 19:01:25 GMT
6-8 tons seems about right for a 12.2 metre long Tyrannotitan considering it is unusually bulky for Carcharodontosauridae.
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Post by Hatzegopteryx on Feb 16, 2014 19:37:56 GMT
Yeah, and ~7.5 should be a fair average.
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Post by thesporerex on Feb 16, 2014 19:51:28 GMT
We should just use a range, we can only use specific estimates for specimens. This thread is sort of pointless since we know Tyrannotitan is more than 40 feet long and will obviously weigh 6 tons at a minimum.
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Post by Hatzegopteryx on Feb 16, 2014 21:36:13 GMT
Sort of, but Tyrannotitan chubutensis is quite controverial in size. My analysis on MPEF-PV 1157 gave ~6500kg, which I thought would be interesting to share.
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Post by thesporerex on Feb 17, 2014 9:15:36 GMT
I would say this thread is more useful for estimating specimen size than the specie
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Post by Hatzegopteryx on Feb 17, 2014 16:00:52 GMT
Mostly yes, MPEF-PV 1157 (Tyrannotitan chubutensis paratype) has been shown with a scalebar and a ~140cm femur, so I just calculated its length and mass based on its relative's holotype, MUCPv-Ch1.
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