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Extinct Animal Questions
Topic Started: Nov 26 2013, 10:24 PM (193,237 Views)
Ulquiorra
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Two questions regarding Amphicyon,

What was the largest species of Amphicyon?

Was Amphicyon capable of standing bipedally, like a bear?
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Komodo
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Varanus komodoensis

Amphicyon ingens is the largest AFAIK as it's recognized as such in most sources (others point to A. major instead).

Not very sure if it was capable of standing on two feet, despite being plantigrade. Biomechanics is hardly my area, though, so I think someone else may answer that.
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54godamora
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ok what is the fastest prehistoric animal on land?
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Acinonyx Jubatus
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I AM THE UNSHRINKWRAPPER!

If I had to guess, I'd say Miracinonyx trumani.
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54godamora
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what is its top speed?
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Fireplume
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Snok Snok Snerson

"Prehistoric" is an awful large number of ambiguities... like... specify your question there dude.

As for La Brean fauna found elswhere, you do realize that they were found over MASSIVE portions of North [and South for some] America?
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54godamora
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when i mean prehistoric, i mean any prehistoric animal from the 3 main time periods: paleozoic, mesozoic, and cenozoic. the holocene does not count
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Acinonyx Jubatus
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I AM THE UNSHRINKWRAPPER!

54godamora
Sep 23 2017, 08:09 PM
what is its top speed?
Probably a little less than a modern cheetah.
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BossAggron
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Formerly Dilophoraptor

54godamora
Sep 23 2017, 10:24 PM
when i mean prehistoric, i mean any prehistoric animal from the 3 main time periods: paleozoic, mesozoic, and cenozoic. the holocene does not count
Eras* and that's still ~540 million years of animals to choose from. We can only guess speeds, and even then, are you asking on air speed or land speed, maybe even water speed. It would be better to narrow down that 540 million years into something more manageable.
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54godamora
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I was asking because it relates to my story
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Fireplume
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Snok Snok Snerson

Whatever it is asked for it's an incredibly arbitrary question, BUT you did specify terrestrial speed. I'm gonna have to disagree with Miracinonyx tbh, its proportions tell it was slower than Acinonyx, so I bet it'd be one of the Terror Birds [probably Phorusrhacos], I read that inferring from fossils they could run incredibly fast. Perhaps do some research there.
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Jannick
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Papua merdeka!

I believe it was Mesembriornis that was considered to be the fastest member of the group, but I'm not sure if that hypothesis still stands.
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Posted Image Flish
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Fireplume
Sep 27 2017, 11:55 AM
Whatever it is asked for it's an incredibly arbitrary question, BUT you did specify terrestrial speed. I'm gonna have to disagree with Miracinonyx tbh, its proportions tell it was slower than Acinonyx, so I bet it'd be one of the Terror Birds [probably Phorusrhacos], I read that inferring from fossils they could run incredibly fast. Perhaps do some research there.
doubtful, even maximum speeds for Mesembriornis put it at only 56 miles per hour. Bipeds just aren't typically fast because they only have two limbs for propulsion rather than four. Even if Miracinonyx was not as fast as Acinonyx, it was still built for speed, and probably faster than 55 miles per hour since it was probably hunting pronghorn.
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Guilmon
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Rob Schneider herp de derp, rated PG-13!

Could Megatherium outrun a human?
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stargatedalek
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I'm not slow! That's just my moe!

Guilmon
Sep 27 2017, 09:00 PM
Could Megatherium outrun a human?
Potentially, but certainly not for very long, most likely just a few paces (which is a few meters in this context).
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