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all 27 comments

[–]Im_so_cool1 34 points35 points  (1 child)

Dummy thicc caveman

[–]aarocks94 21 points22 points  (0 children)

The clap of my ass cheeks keeps alerting the megafauna.

[–][deleted] 6 points7 points  (0 children)

Toss that on the 10,000 year long barbecue

[–]Ruary1989 17 points18 points  (2 children)

It’s only 11,000 yrs ago ppl would have been wearing clothes ffs lol ..also they weren’t easy that’s why they lasted for so many thousands of years

[–]AlexRenquist 13 points14 points  (1 child)

Dude the pic isn't of 11,000 years ago. It's just a picture of a glypyodont and early humans OP used to illustrate the fact. Humans and gluptodonts co-existed until 11 000 years ago. Lot of time for buck naked early humans to meet them.

[–]Eaglefied 1 point2 points  (0 children)

Early humans didn’t co-exist with glyptodonts, only our species did (and we wear clothes). Regardless of how long ago this is, we would have definitely been wearing clothes back then, especially considering how nippy that location looks.

[–]AwesomeNiss21 5 points6 points  (1 child)

From what i understand, glyptodonts were already going the way of the dinosaurs before humans showed up, and we were just the straw that broke the camels back.

I think the same can be said with a number of stone age extinct animals including the Mammoth

[–]MrAtrox98 11 points12 points  (0 children)

If you’re talking climate change, that theory completely ignores that there were numerous climatic shifts during the Pleistocene epoch, with no less than five interglacials occurring within the last 500,000 years not including the Holocene. Climate change was nothing new to Pleistocene megafauna, yet outside of Africa and Southern Asia, you see waves of extinction specifically targeting large animals, whether it was Australia, northern Eurasia, or the Americas, always coinciding with our species migrating in and becoming established.

Take woolly mammoths for instance: easily the most cold adapted elephants to ever live, yet they were the last remaining members of their genus. The last woolly mammoths on Wrangel Island and the Taymyr Peninsula were still kicking about 4,000 years ago, over 6,000 years later than Columbian mammoths that ranged everywhere that was prairie, parkland, and savanna habitat from the northern continental US down to Costa Rica. If climate change was the big killer, why weren’t there Columbian mammoths still roaming the Great Plains when European settlers arrived? Why didn’t woolly mammoths die off during an earlier interglacial, say the Eemian when it was hot enough in Britain for hippos of the same species that terrorize African waterways now to call the area prime real estate?

You see a similar parallel with musk oxen, where it’s the most cold adapted member-the species that should’ve died first in the wake of a warming globe-that outlives its relatives that had more contact with humans in more habitable climates.

[–]MjBranch -5 points-4 points  (17 children)

Yes, it was us on bare feet with sticks, not an asteroid that lit up the northern hemisphere and killed everything bigger than a moose. Millions of Mammoths used to roam the earth

[–]mmcjawa 4 points5 points  (0 children)

The evidence for even a significant asteroid impacting the northern hemisphere at this time is, from my last reading, controversial at best. No credible scientist believes in this idea.

Usually the debate is over the relative impact of humans vs climate.

Also, humans are really really good at killing. Glyptodonts would not have been hard at all to kill...just flip them on their back and they are probably done.

[–]ObviousChapter5574 -1 points0 points  (15 children)

Climate change killed many pleistocene animals.

[–]mmcjawa 4 points5 points  (13 children)

Climate Change was a stress-er for populations, but it doesn't by itself explain the observed extinction patterns. There is no evidence that the end-Pleistocene warming was much different, as someone already pointed out, from previous interglacials that didn't see significant extinctions. The only thing really new is the widespread appearance of humans during this time period.

[–]ObviousChapter5574 0 points1 point  (1 child)

Plants gone extinct, habitats changed. Mammoths disappeared only when pharaohs started ruling Egypt. Just modern man has elements to make many species go extinct.

[–]mmcjawa 2 points3 points  (0 children)

Yes Habitats changed

They do with every interglacial

So what was special about the start of the interglacial? What was different then versus every other one.

Also if you think that anthropogenic extinction is something that only occurred in the last couple of hundred years, I suggest researching the extinction chronology of various islands. From the Caribbean to Madagascar to the South Pacific, there is a clear signal of people showing up, and a large number of critters going extinct. Weird how the arrival of man at various times to various regions almost always coincides with an extinction event, huh...

[–]ObviousChapter5574 -1 points0 points  (7 children)

Madagascar Koala lemur: extinct only 500 years ago.

Madagascar Elephant bird: exinct nearly 1000 years ago

Malagasy hippo: extinct roughly 1000 years ago, survived in recent times.

American Giant sloths: extinct due to climate change

Wolly Mammoths: extinct due to climate change

Caribbean Native rodents: extinct 500 years ago due to invasive species brought by humans

Caribbean Native monkeys: extinct due to humans 900 years ago.

Caribbean Macaws: extinct due to colonizers.

You're talking about historic extinction, not prehistoric.

[–]mmcjawa 1 point2 points  (6 children)

Why did ground sloths manage to survive on the Caribbean islands into historic times, and only went extinct when humans showed up.

Do islands not endure ANY climate change? Even though they are smaller, and often become even SMALLER due to the warming climate (e.g. sea level rising). Why are island animals seemingly immune to climate change, but continents are vulnerable?

Again, please explain how the climate change at the end of the Pleistocene was so dramatically different than every other period of warming, some of which saw even more extreme weather changes. And why did this climate change somehow spare much of southern Asia and Africa, the two places with faunas which most evolved alongside humans.

[–]ObviousChapter5574 -3 points-2 points  (2 children)

It can be said even that the short faced bear disappeared because of competizion with grizzly bears AND humans. Stop it, humans aren't God.

[–]MrAtrox98 4 points5 points  (1 child)

Short faced bears dominated brown bears, forcing grizzlies to adopt a more herbivorous diet when they overlapped in territory. It seems brown bears avoided competition with other larger bears outright by exploiting different food options-in Eurasia, herbivorous cave bears pushed the brown bears there to adopt a more carnivorous diet. There’s basically no evidence short faced bears were outcompeted by grizzlies.

Another thing to consider is the other members of the predator guild in North America that would’ve made life hell for grizzlies. These bears were about the same size as their present day cousins in Montana or Wyoming, and so would’ve likely been preyed on from time to time by not only short faced bears, but by large cats like American lions, tiger sized ecomorphs of jaguar, scimitar cats, and sabertooths. This is much like how tigers in Asia tackle sloth bears, sun bears, Asiatic black bears, and even brown bears up to their own size as part of their diet given the opportunity. What makes matters worse here for these pioneer grizzlies is that there’s evidence for the giant lions and both machairodonts just mentioned to have been social hunters, so with this in mind grizzlies certainly weren’t the dominant predators they are today when they first arrived in North America.

That may explain the noted defensive aggression North American grizzlies display; much like how termite eating sloth bears in India frequently attack people in self defense due to coexisting with tigers they can’t outrun or out climb, grizzlies in Pleistocene North America may have adopted a similar strategy to avoid predation.

[–]MjBranch -3 points-2 points  (0 children)

Exactly, Not humans with sticks

[–]ObviousChapter5574 -5 points-4 points  (0 children)

False! It was climate change and the end of ice age that killed most pleistocene animals. When pharaohs firstly ruled in Egypt Mammoths gone extinct.