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Post by brobear on Dec 27, 2020 15:02:13 GMT -5
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Post by tom on Dec 27, 2020 16:23:19 GMT -5
tom I would suggest using this comparison instead of the old "arena thing" as the flagship comparison of the Domain; it definitely looks much better imo! Only if all of you agree ofc. Knock yourself out Undertaker. Looks great.
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Post by King Kodiak on Dec 27, 2020 16:32:10 GMT -5
theundertaker45 : Reply 649: awesome post really. And you are right because according to Verdugo, who is one of the most knowledgeable posters, he explained that the methods used to estimate both animals, the largest Arctotherium and the largest Arctodus, were a little different. He explained that if the same method to estimate Angustidens was used on Simus, you would also get a 1500+ kg Simus. and if the same method used to estimate Simus was used on Angustidens, you would also get an 1000 kg Angustidens:
domainofthebears.proboards.com/post/19256/thread
However, Simus had a much larger range than Angustidens and many more fossils were found. So who knows? Maybe there were larger specimens of Angustidens out there. So for now, both species seem to have a very similar average weight.
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Post by brobear on Dec 27, 2020 16:43:39 GMT -5
That bear skeleton, found in Buenos Aires Province, Argentina, in 1935 and reexamined much more recently was the remains of an old bear. Probably the equivalent of a 20-year-old Kodiak bear in that he was of a normal max size. I agree that there was very likely little difference in weight between these two biggest forms of short-faced bears. In fact, it is very likely that they both had reached the max-size that a bear can become.
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Post by theundertaker45 on Dec 27, 2020 16:51:28 GMT -5
For your interest; the largest humerus bones of both species are:
Arctotherium Angustidens: 620mm in length Arctodus Simus: 646mm in length
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Post by theundertaker45 on Dec 27, 2020 16:56:47 GMT -5
tomMaybe you could edit the thumbnail of our front page again; you managed to do it very well the last time and I wouldn't know where to start as I'm not that experienced with Proboards.
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Post by brobear on Dec 27, 2020 16:57:41 GMT -5
For your interest; the largest humerus bones of both species are: Arctotherium Angustidens: 620mm in length Arctodus Simus: 646mm in length 26 millimeters is equal to 1.02 inches ( so very little difference )
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Post by King Kodiak on Dec 27, 2020 17:19:14 GMT -5
For your interest; the largest humerus bones of both species are: Arctotherium Angustidens: 620mm in length Arctodus Simus: 646mm in length 26 millimeters is equal to 1.02 inches ( so very little difference ) Basically no difference. Anyhow, according to the latest estimations, both species are now estimated to average around 1500 lbs with a normal max weight of around 2200 lbs, those are still absolutely humongous bears.
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Post by theundertaker45 on Dec 27, 2020 17:38:21 GMT -5
Regarding bones:
Differences of 1-2cm can make up a difference of more than 100kg. We know that the largest Arctodus Simus having been investigated so far (590mm humerus) was estimated to weigh ~957kg. Now, we know that the largest bones were 5-10% larger in length; usually when this is the case, paleontologists will assume that the bone is 5-10% larger in any aspect of measurement, therefore they use an isometric scaling formula. When applying this formula to our bears, it would lead me to the following mass estimates:
Arctodus Simus (590mm Humerus): 957kg Arctotherium Angustidens (620mm Humerus): 1111kg Arctodus Simus (646mm Humerus): 1256kg
As we see, a difference of many mm can be very significant as it would be assumed that the animal is bigger in all aspects (not just length); this is what's usually done with dinosaurs and how they come to their weight estimations.
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Post by King Kodiak on Dec 27, 2020 18:30:46 GMT -5
theundertaker45 : Once again, very good and interesting post. So the Simus specimen with the 646 mm Humerus has a 56 mm (5.6 cm) longer Humerus than the Simus specimen with the 590 mm Humerus that was estimated to weigth 957 kg. Therefore based on the fact that a length increase of 1-2 cm can lead to more than 100 kg in weight, you added 300 kg to the Simus with the 646 mm Humerus. So you calculated the largest Simus to weight 1256 kg (2769 lbs). And this would be the largest bear specimen ever correct?
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Post by theundertaker45 on Dec 27, 2020 19:10:29 GMT -5
King KodiakI mean everything here are estimations but this bear had the largest humerus being found to date and would therefore be estimated as the largest individual for sure. The pitty is that the largest bone being included in a scientific study on Arctodus Simus was the one measuring 590mm which resulted in a mass of 957kg. So yes, based on its humerus length we could be talking about the largest bear ever in this case.
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Post by tom on Dec 27, 2020 19:22:12 GMT -5
tomMaybe you could edit the thumbnail of our front page again; you managed to do it very well the last time and I wouldn't know where to start as I'm not that experienced with Proboards. yeah there's a little bit of a learning curve and a little bit of trial and error to do that, but proboards has some pretty good help forums on how to do stuff like that If you're willing to put in the time to research it, that's how I did it. I'll look into it. What would you like me to replace it with?
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Post by OldGreenGrolar on Dec 27, 2020 23:15:17 GMT -5
Found this on Carnivora.
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Post by theundertaker45 on Dec 28, 2020 6:44:16 GMT -5
tom Maybe you could edit the thumbnail of our front page again; you managed to do it very well the last time and I wouldn't know where to start as I'm not that experienced with Proboards. yeah there's a little bit of a learning curve and a little bit of trial and error to do that, but proboards has some pretty good help forums on how to do stuff like that If you're willing to put in the time to research it, that's how I did it. I'll look into it. What would you like me to replace it with? Sure, go ahead. I really don't like these old comparisons of mine anymore.
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Post by King Kodiak on Dec 28, 2020 9:47:10 GMT -5
theundertaker45 : Reply #666: that template looks like what juveniles use all over the internet. I have no doubts the one you have been using up to now is much better. That's my opinion.
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Post by brobear on Dec 28, 2020 9:50:26 GMT -5
Quote: Reply #666: that template looks like what juveniles use all over the internet. *I haven't seen it. Posted where?
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Post by King Kodiak on Dec 28, 2020 9:53:34 GMT -5
Quote: Reply #666: that template looks like what juveniles use all over the internet. *I haven't seen it. Posted where? Its right there on Reply #666, you even said you love it already.
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Post by brobear on Dec 28, 2020 9:56:18 GMT -5
Quote: Reply #666: that template looks like what juveniles use all over the internet. *I haven't seen it. Posted where? Its right there on Reply #666, you even said you love it already.Juveniles did not post that...
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Post by King Kodiak on Dec 28, 2020 10:04:54 GMT -5
Its right there on Reply #666, you even said you love it already. Juveniles did not post that... I know that, lol, but i think that template Style is "juvenile like", i much prefer the old one. The simple one.
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Post by King Kodiak on Dec 28, 2020 10:11:31 GMT -5
In my opinion, this style here:
Looks much better and professional than this style here:
Maybe its the colors, i dont know. Maybe we should have a vote?
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