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Who wins?
South American Giant Short-faced Bear 18 (58.1%)
Giant Bison 13 (41.9%)
Total Votes: 31
South American Giant Short-faced Bear v Giant Bison
Topic Started: Feb 28 2012, 05:37 PM (5,917 Views)
Taipan
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South American Giant Short-faced Bear - Arctotherium angustidens
Arctotherium is an extinct genus of South American short-faced bears within Ursidae of the late Pliocene through the end of the Pleistocene. They were endemic to South America living from ~2.0–0.01 Ma, existing for approximately 1.99 million years. Their closest relatives were the North American short-faced bears of genus Arctodus (A. pristinus and A. simus). The closest living relative would be the Spectacled bear (Tremarctos ornatus). Arctotherium was named by Hermann Burmeister in 1879. It was assigned to Tremarctinae by Krause et al. 2008.[2] A specimen of A. angustidens from Buenos Aires shows an individual estimated, using the humerus, to weight between 983–2,042 kg (2,170–4,500 lb), though the authors consider the upper limit as improbable and say that 1,588 kg (3,500 lb) is more likely, however, using the radious, the mass estimate shrinks to a maximum of 1,108 kg (2,440 lb). Independently of the method it is possibly the largest bear ever found and contender for the largest carnivorous land mammal known to science.

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Giant Ice Age Bison - Bison latifrons
Bison latifrons is an extinct species of bison that lived in North America during the Pleistocene. Also known as the giant bison, it reached a shoulder height of 2.5 metres (8.5 feet), and had horns that spanned over 2 metres (6.5 feet). The known dimensions of the species are much larger than either extant species of bison (it was approximately twice the body size) and other extant large bovids, and B. latifrons may be the largest bovid in the fossil record. Reseaarchers estimate the weight of Giant Bison between 2,500 pounds (1,125 kilograms) and 4,000 pounds (1,800 kilograms).

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Scar
Feb 28 2012, 12:54 PM
Arctotherium angustidens vs Bison Latifrons ?
Edited by Taipan, Sep 16 2012, 05:50 PM.
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DinosaurMichael
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How big is the Bison?
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Megafelis Fatalis
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The Giant Bison wins IMO
EDIT:
I removed the size comparison
Edited by Megafelis Fatalis, Mar 1 2012, 05:12 PM.
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DinosaurMichael
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Is that how big it really got? If so. This is a mismatch. The Bison looks heavier and bigger. Bison wins.
Edited by DinosaurMichael, Feb 28 2012, 11:39 PM.
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simpyd
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Looking at the first post, both animals are suppose to be be in same weight range if not the same weight, the bison in the comparison looks twice size of the bear.. 3500+ pound bear is just scary. I'd say 7/10 bear. If it can get around those massive horns..
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Mack
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@Prehistoric Cat

I really don´t think that scale of Arctotherium (looks like Arctodus) is correct since it´s weight would had been rather similar and on that scale the bison appears much bigger. Try this instedd and put them at their oppesite sides rather
Posted Image

Also remember that bears looks wider when viewed from the front.
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Megafelis Fatalis
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@ Mack
This is the average size for Arctotherium (probably 850kg)
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Mack
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Well for the moment the specimen weighted 1,588- 1,749 kg should be used which is the only current specimen of the species. If we have more samples of this bear in a near future, then we can give the average weight. But for the moment the weight of the current specimen should be used as a refference.
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Megafelis Fatalis
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Mack
Feb 29 2012, 02:27 AM
Well for the moment the specimen weighted 1,588- 1,749 kg should be used which is the only current specimen of the species. If we have more samples of this bear in a near future, then we can give the average weight. But for the moment the weight of the current specimen should be used as a refference.


Well, wikipedia say "Big Males"
Quote:
 
A humerus of A. angustidens from Buenos Aires indicates that the big males of this species would have weighed between 1588-1749 kg
Arctotherium - Wikipedia
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Mack
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Yes it was most probabley above the average in terms of it´s bulk, but as I said before it´s the only current specimen of the species founded so far. If we find more of this particulair species then the weight-figure would decrease.
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SameerPrehistorica
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My favorite is Bear, but the Giant Bison is bigger... So it wins mostly...
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Cat
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I vote for the bear. If the estimates are correct, it would be about as heavy as the bison, and at parity I'm convinced the bear has good chances to win, even if with a certain amount danger.
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Megafelis Fatalis
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Mack
Feb 29 2012, 02:36 AM
Yes it was most probabley above the average in terms of it´s bulk, but as I said before it´s the only current specimen of the species founded so far. If we find more of this particulair species then the weight-figure would decrease.
They found a skeleton in Argentina in 1935. I read it here
Edited by Megafelis Fatalis, Feb 29 2012, 11:49 PM.
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Mack
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Well yes, it´s the same bear, note:
Quote:
 
The bear skeleton, found in Buenos Aires Province, Argentina, in 1935, was recently reexamined by Schubert and study co-author Leopoldo Soibelzon, a paleontologist from Argentina who specializes in South American fossil bears.

By measuring its almost elephant-size humerus, or upper arm bone, the team was able to calculate the size of the rest of the bear's body, Schubert said.

Their analysis also revealed that the animal was an old male that had endured several serious injuries throughout his life.
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Megafelis Fatalis
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@ Mack
Ok, here it is
Arctotherium = 190cm tall at the shoulder
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