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Arctodus simus v Sumatran Rhinoceros
Topic Started: Mar 28 2012, 08:20 PM (6,781 Views)
Taipan
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Arctodus simus
Arctodus (Greek, "bear tooth") — known as the short-faced bear or bulldog bear — is an extinct genus of bear endemic to North America during the Pleistocene ~3.0 Ma.—11,000 years ago, existing for approximately three million years. Arctodus simus may have once been Earth's largest mammalian, terrestrial carnivore. It was the most common of early North American bears, being most abundant in California. It was native to prehistoric North America from about 800,000 years ago, and became extinct about 12,500 years ago. It has been found from as far north as Ikpikpuk River, Alaska to Lowndes County, Mississippi. It is one of the largest bears in the fossil record and was among the largest mammalian land predators of all time. The type specimen came from Potter Creek Cave in Shasta County, California. In a recent study, the mass of six A. simus specimens was estimated, one-third of them weighed about 900 kg (1 short ton), the largest being UVP 015 at 957 kg (2,110 lb), suggesting specimens that big were probably more common than previously thought. It stood 8–10 feet (2.4–3.0 m) tall on hind legs while a large specimen would have been 11–12 feet (3.4–3.7 m) tall with a 14-foot (4.3 m) vertical arm reach.

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Sumatran Rhinoceros - Dicerorhinus sumatrensis
The Sumatran rhinoceros (Dicerorhinus sumatrensis) is a member of the family Rhinocerotidae and one of five extant rhinoceroses. It is the only extant species of the genus Dicerorhinus. It is the smallest rhinoceros, although is still a large mammal. This rhino stands 112–145 cm (3.67–4.76 ft) high at the shoulder, with a head-and-body length of 2.36–3.18 m (7.7–10.4 ft) and a tail of 35–70 cm (14–28 in). The weight is reported to range from 500 to 1,000 kg (1,100 to 2,200 lb), averaging 700–800 kg (1,500–1,800 lb), although there is a single record of a 2,000 kg (4,400 lb) specimen. Like the African species, it has two horns; the larger is the nasal horn, typically 15–25 centimetres (5.9–9.8 in), while the other horn is typically a stub. A coat of reddish-brown hair covers most of the Sumatran rhino's body.

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Prehistoric Cat
Mar 28 2012, 02:00 AM
Arctodus Simus v Sumatran Rhinoceros
Edited by Taipan, Oct 21 2017, 07:49 PM.
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Ursus 21
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Quote:
 

I've seen this account before and I don't think the bear was that impressive tbh.

The bear ambushed the bison, who fell down and broke its leg. The bear should have been able to finish a herbivore with a broken front leg, but the bison still fought back and the bear was unable to kill it.

Personally, I consider this account to be more impressive on the bison's behalf than the bear's.

That's just my opinion.

Regarding this matchup, your take on how this fight would go down is reasonable enough.
Edited by Ursus 21, Mar 31 2018, 12:38 AM.
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Lightning
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Ursus 21
Mar 31 2018, 12:37 AM
Quote:
 

I've seen this account before and I don't think the bear was that impressive tbh.

The bear ambushed the bison, who fell down and broke its leg. The bear should have been able to finish a herbivore with a broken front leg, but the bison still fought back and the bear was unable to kill it.

Personally, I consider this account to be more impressive on the bison's behalf than the bear's.

That's just my opinion.

Regarding this matchup, your take on how this fight would go down is reasonable enough.
That's quite true.

The video you posted of a female bear killing a deer that looked larger than itself is impressive though.
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Thergi
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Arctodus simus is not a ~900 kg animal.
http://carnivoraforum.com/single/?p=10043139&t=30194710
Also, what's the discord?
Edited by Thergi, Apr 1 2018, 04:28 AM.
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Warsaw2014
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Thergi
Apr 1 2018, 03:36 AM
Arctodus simus is not a ~900 kg animal.
http://carnivoraforum.com/single/?p=10043139&t=30194710
Also, what's the discord?
http://www.bioone.org/doi/abs/10.1080/02724630903416027#/doi/full/10.1080/02724630903413016
Body mass estimates obtained from major limb bone measurements reveal that A. simus specimens of around 1000 kilograms were more common than previously suspected. Scaling relationships in extant bears of limb lengths on the least width of the femoral shaft (the variable best correlated with body mass) indicate that A. simus was not as relatively long-legged as previously thought
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Lightning
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Thergi
Apr 1 2018, 03:36 AM
Arctodus simus is not a ~900 kg animal.
http://carnivoraforum.com/single/?p=10043139&t=30194710
Also, what's the discord?
Taipan reffered to that 2011 guy as "someone". Can we really trust a random "someone"? Until a new scientific study claiming otherwise comes out, I'm holding the belief that A.simus was 900kg.
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Thergi
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Warsaw2014
Apr 1 2018, 05:49 AM
Thergi
Apr 1 2018, 03:36 AM
Arctodus simus is not a ~900 kg animal.
http://carnivoraforum.com/single/?p=10043139&t=30194710
Also, what's the discord?
http://www.bioone.org/doi/abs/10.1080/02724630903416027#/doi/full/10.1080/02724630903413016
Body mass estimates obtained from major limb bone measurements reveal that A. simus specimens of around 1000 kilograms were more common than previously suspected. Scaling relationships in extant bears of limb lengths on the least width of the femoral shaft (the variable best correlated with body mass) indicate that A. simus was not as relatively long-legged as previously thought
That study is from a year prior to the one Taipan posted.
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Warsaw2014
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Thergi
Apr 1 2018, 12:19 PM
Warsaw2014
Apr 1 2018, 05:49 AM
Thergi
Apr 1 2018, 03:36 AM
Arctodus simus is not a ~900 kg animal.
http://carnivoraforum.com/single/?p=10043139&t=30194710
Also, what's the discord?
http://www.bioone.org/doi/abs/10.1080/02724630903416027#/doi/full/10.1080/02724630903413016
Body mass estimates obtained from major limb bone measurements reveal that A. simus specimens of around 1000 kilograms were more common than previously suspected. Scaling relationships in extant bears of limb lengths on the least width of the femoral shaft (the variable best correlated with body mass) indicate that A. simus was not as relatively long-legged as previously thought
That study is from a year prior to the one Taipan posted.
What you mean by "study".This article?https://accpaleo.wordpress.com/2011/02/27/central-coast-critters-arctodus/
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221Extra
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Deny, deny, deny.
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Thergi
Apr 1 2018, 12:19 PM
Warsaw2014
Apr 1 2018, 05:49 AM
Thergi
Apr 1 2018, 03:36 AM
Arctodus simus is not a ~900 kg animal.
http://carnivoraforum.com/single/?p=10043139&t=30194710
Also, what's the discord?
http://www.bioone.org/doi/abs/10.1080/02724630903416027#/doi/full/10.1080/02724630903413016
Body mass estimates obtained from major limb bone measurements reveal that A. simus specimens of around 1000 kilograms were more common than previously suspected. Scaling relationships in extant bears of limb lengths on the least width of the femoral shaft (the variable best correlated with body mass) indicate that A. simus was not as relatively long-legged as previously thought
That study is from a year prior to the one Taipan posted.


I suggest reading his follow up, he references the study posted by Warsaw:

Quote:
 
I talked about Arctodus being shrunk down from the giant it is often portrayed as. Well being the numb-nuts that i am, i had forgotten that the paper that stripped Arctodus of most of it’s unique characteristics actually argues that Arctodus may have been bigger than what some have argued:

According to our estimates,
the heaviest specimens of A. simus are UVP 015 from Utah and F:AM 25535 from Nebraska, with body masses calculated as ca. 957 and 863 kg, respectively (Table 3). In contrast, the smallest
specimens are LACM 122434 from Rancho La Brea and UM25611 from Kansas, with figures of ca. 317 and 388 kg, respectively (Table 3). The fact that one third of the specimens analyzed approached a ton suggests that individuals of this size were more common than previously suspected.



https://accpaleo.wordpress.com/2011/03/20/some-further-thoughts-on-arctodus/
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