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Post by dinosauria101 on Aug 9, 2019 10:40:03 GMT 5
Large estimate of Purussaurus vs Sue the Tyrannosaurus rex  |
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Post by dinosauria101 on Aug 9, 2019 11:27:42 GMT 5
Purussaurus vs Dunkleosteus - max vs max  |
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Post by dinosauria101 on Aug 9, 2019 13:17:24 GMT 5
Tyrannosaurus rex vs Columbian mammoth - average vs average  |
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Post by jdangerousdinosaur on Aug 9, 2019 16:00:18 GMT 5
Some big theropods and the African bush elephant  Isn't the Mapusaurus somewhat undersized? From what I know, 12-12.5 meters and 7 tons is the average, while the max is 13.6 meters and 8.5 tons as per specimen MCF-PVPH-108.145 (pubic shaft fragment) NOTE: That is not MCF on the chart. It's undersized as the pubic shaft is 10 percent larger than the Giganotosaurus holotype Franoys created the Mapusaurus for that size comparison I'm pretty sure the 13 meter long estimations for Mapusaurus are outdated. But it's best if you ask Franoys how he got his result just leave a message on his page and he should get back to you. il do more research later after work. |
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Post by dinosauria101 on Aug 9, 2019 17:58:40 GMT 5
Isn't the Mapusaurus somewhat undersized? From what I know, 12-12.5 meters and 7 tons is the average, while the max is 13.6 meters and 8.5 tons as per specimen MCF-PVPH-108.145 (pubic shaft fragment) NOTE: That is not MCF on the chart. It's undersized as the pubic shaft is 10 percent larger than the Giganotosaurus holotype Franoys created the Mapusaurus for that size comparison I'm pretty sure the 13 meter long estimations for Mapusaurus are outdated. But it's best if you ask Franoys how he got his result just leave a message on his page and he should get back to you. il do more research later after work. Rather, I got it from here: www.deviantart.com/namdaotetanurae/art/Mapusaurus-roseae-499382857And here: theworldofanimals.proboards.com/thread/1090 |
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Post by jdangerousdinosaur on Aug 10, 2019 1:22:47 GMT 5
Right im back from work (hate the place) and looking at that Mapusaurus diagram you posted from earlier and it is an out of date one it seems to have been created around 2014 and that might not seem that long ago but when it comes to these animals it is. The most up to date diagram is the one from Franoys someone posted a comment asking Franoys if this was the largest specimen for Mapusaurus or a more average sized one and Franoys stated It is an individual based on the largest bones of the bonebed. Individuals based on the rest of the bones (the ones not listed in the deviation) are all smaller. The problem is that the original paper doesn't group all the remains on different individuals (aside from some vague suggestions) because they were found mixed up in a bonebed. You will see what I mean if you give the paper a look; I think it is available online. So going from this Mapusaurus is the second most massive theropod so far known weighing slightly more than the largest estimated size for Spinosaurus and the Giganotosaurus holotype but is not quite as heavy as Tyrannosaurus specimens Stan or Sue or Scotty. If you don't already I think it is best to follow Franoys and his work because his work is the most up to date and it is very accurate and if you ever want anything answering he normally answers peoples questions www.deviantart.com/franoys could Mapusaurus reach 13 meters long ? Maybe but right now with the data we have it shows no big fully terrestrial land predator has quite reached that size its only Spinosaurus that is estimated to reach around 15 meters long and even that is not completely certain. Yes there is the Giga jaw fragment that could have belonged to an individual that is slightly larger than the holotype but with it being just a jaw fragment it really is not reliable especially when the jaws of the big theropods can vary in size so much.  |
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Post by dinosauria101 on Aug 10, 2019 4:14:12 GMT 5
Right im back from work (hate the place) and looking at that Mapusaurus diagram you posted from earlier and it is an out of date one it seems to have been created around 2014 and that might not seem that long ago but when it comes to these animals it is. The most up to date diagram is the one from Franoys someone posted a comment asking Franoys if this was the largest specimen for Mapusaurus or a more average sized one and Franoys stated It is an individual based on the largest bones of the bonebed. Individuals based on the rest of the bones (the ones not listed in the deviation) are all smaller. The problem is that the original paper doesn't group all the remains on different individuals (aside from some vague suggestions) because they were found mixed up in a bonebed. You will see what I mean if you give the paper a look; I think it is available online. So going from this Mapusaurus is the second most massive theropod so far known weighing slightly more than the largest estimated size for Spinosaurus and the Giganotosaurus holotype but is not quite as heavy as Tyrannosaurus specimens Stan or Sue or Scotty. If you don't already I think it is best to follow Franoys and his work because his work is the most up to date and it is very accurate and if you ever want anything answering he normally answers peoples questions www.deviantart.com/franoys could Mapusaurus reach 13 meters long ? Maybe but right now with the data we have it shows no big fully terrestrial land predator has quite reached that size its only Spinosaurus that is estimated to reach around 15 meters long and even that is not completely certain. Yes there is the Giga jaw fragment that could have belonged to an individual that is slightly larger than the holotype but with it being just a jaw fragment it really is not reliable especially when the jaws of the big theropods can vary in size so much. So, correct me if I'm wrong, but you're saying Mapusaurus did not average 13.6 meters and 8.5 tons? That I can agree with. A better average is likely 12-12.5 meters and 7 tons. However, on the accuracy of the pubic shaft size, I'm not taking it for gospel; many large theropods have a wide size range. For example, Tyrannosaurus rex. It ranges from 5-8 tons with a 6-7 ton average, and Daspletosaurus' upper weight of 3.8 tons is over twice the lower weight of 1.8 tons, so an 8.5 ton Mapusaurus at least holds SOME water |
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Post by jdangerousdinosaur on Aug 10, 2019 4:28:41 GMT 5
I'm saying no fully land based theropod that we know of so far reaches 13.6 meters with the evidence that we have right now it's not out of the question some of them might have reached that size but so far we just don't have anything that really proves it. More fossil evidence and better preserved specimens are needed.
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Post by dinosauria101 on Aug 10, 2019 4:30:32 GMT 5
Yeah, it's likely but unproven going by other theropods
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Post by jdangerousdinosaur on Aug 10, 2019 4:33:54 GMT 5
Sadly the only way we could know for sure is if we could go back and view a big population in their own time and study them like we do with animals today but that's out of the question, so we can only go from the limited fossils we have and make educated guesses and yes I know it completely sucks.
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Post by dinosauria101 on Aug 10, 2019 17:23:37 GMT 5
5 Gustaves vs Pete 3  |
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Post by jdangerousdinosaur on Aug 10, 2019 19:27:31 GMT 5
Spinosaurus specimen MSNM-v-4047 with the Giganotosaurus holotype  |
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Post by jdangerousdinosaur on Aug 10, 2019 19:32:09 GMT 5
Spinosaurus specimen MSNM-4047 with Giganotosaurus specimen MUCP-V95 estimated size (   |
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Post by dinosauria101 on Aug 10, 2019 19:37:46 GMT 5
Siats vs Dacentrurus - average vs average  |
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Post by jdangerousdinosaur on Aug 10, 2019 19:42:52 GMT 5
Tarbosaurus specimens by Franoys  |
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