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| Visual Comparisons Thread | |
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| Tweet Topic Started: Jan 7 2012, 01:17 AM (507,201 Views) | |
| ManEater | Jul 29 2017, 06:25 AM Post #1591 |
Omnivore
  ![]](http://b2.ifrm.com/28122/87/0/p701956/pipright.png)
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Ituri, Congo:
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| Thalassophoneus | Aug 22 2017, 06:28 AM Post #1592 |
Pelagic Killer
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By randomdinos on Deviantart. The first one is pliosaurs and the second is mosasaurs. 
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| Taipan | Aug 25 2017, 11:07 PM Post #1593 |
Administrator
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 Tremarctine titans We're talking about a corner of the ursine family tree called Tremarctinae: the "running bears" or "short-faced bears". Neither of those descriptors is altogether accurate, based as they are on what may be a shaky understanding of perhaps the best-known of the extinct tremarctine species: the giant short-faced bear, Arctodus simus, which thumped around North America from about 1.8 million years ago to 11,000 years ago. βThe spectacled bear is the sole remaining representative of a family that once encompassed some of the all-out most formidable mammals ever to exist.β A. simus without question ranks as one of the biggest terrestrial carnivores of all time, alongside its tremarctine relatives: the South American giant short-faced bear (Arctotherium angustidens) and the huge African short-faced bear (Agriotherium africanum). A male North American giant may have tipped the scales at well more than a ton, towering 5.5 feet or more at the shoulder, and rearing imposingly on its hind legs to nearly ten feet tall. Arctotherium angustidens, the biggest of five Arctotherium species known from Pleistocene South America, may have been even larger: as much as 3,500 pounds! The heft of these vanished relatives makes the spectacled bear look like a pipsqueak, although of course a 400-pound animal β the size of an especially large male Andean bear β is plenty big by modern standards. https://www.earthtouchnews.com/natural-world/evolution/the-spectacled-bear-and-its-spectacular-forebears/ |
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| Taipan | Sep 28 2017, 08:25 PM Post #1594 |
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Administrator
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 The humerus (leg) bones (from left to right) of a cougar, tiger, saber-toothed cat (Smilodon fatalis), lion and American cave lion. Credit: Donald Prothero http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0183175 |
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| Kazanshin | Sep 28 2017, 08:35 PM Post #1595 |
Herbivore
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So the A.C.L. has a little longer but a little thinner humerus than S. Fatalis? |
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| Grazier | Sep 28 2017, 10:32 PM Post #1596 |
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Omnivore
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This is really something, its like as much as lions and tigers are a step up from mountain lions, smilodon and american lions are a comparable step up again from lions and tigers. I never would have looked at it like that until seeing this pic. |
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| Spartan | Oct 11 2017, 09:33 AM Post #1597 |
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Kleptoparasite
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Indian Elephant and Sea lion:
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| Inhumanum Rapax | Oct 12 2017, 05:37 AM Post #1598 |
Parabola Vita
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Whoah there tyke, no one cares, take your infantile sperg fest back to 4chan or whatever run down edge factory you spawned from. I wonder how S. populator would compare? Edited by Inhumanum Rapax, Oct 12 2017, 05:38 AM.
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| Ntwadumela | Oct 13 2017, 08:34 AM Post #1599 |
Herbivore
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 Difference between chicks of two closely related estrildid finch species. Both the photo and birds are mine. Edited by Ntwadumela, Oct 13 2017, 08:39 AM.
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| Warsaw2014 | Oct 15 2017, 04:08 PM Post #1600 |
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Herbivore
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 Comparative Anatomy of the Shoulder Region in the Late Miocene Amphicyonid Magericyon anceps (Carnivora): Functional and Paleoecological Inferences SOURCE Edited by Taipan, Oct 15 2017, 07:26 PM.
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| Inhumanum Rapax | Oct 21 2017, 02:50 AM Post #1601 |
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Parabola Vita
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A cool albeit grainy image comparing the claws of smilodon populator and a male jaguar respectively And a mostly intact S. fatalis claw compared to a large male bengal tiger's claw
Edited by Inhumanum Rapax, Oct 21 2017, 03:17 AM.
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| k9boy | Oct 22 2017, 08:54 PM Post #1602 |
Apex Predator
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what video is that from? and is that a black bear |
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| Ferreomus | Oct 22 2017, 08:56 PM Post #1603 |
Herbivore
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That's probably a female Siberian because the black bear looks larger as I picture but I'm not quite sure. |
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| Warsaw2014 | Oct 29 2017, 05:26 PM Post #1604 |
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Herbivore
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 http://video.dailymail.co.uk/video/mol/2016/08/29/8517560009398467883/640x360_MP4_8517560009398467883.mp4 Edited by Warsaw2014, Oct 29 2017, 05:28 PM.
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| moldovan0731 | Oct 30 2017, 12:41 AM Post #1605 |
Heterotrophic Organism
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I guess most of you know who made these: 
Edited by moldovan0731, Feb 20 2018, 04:37 AM.
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