[SunkenCiv]

Diprotodon Megafauna : Wiki Commons

[piasa]

Perhaps it was due to the eruption of Toba.

[JRandomFreeper]

I'm gonna need more recipes.

/johnny

[goat granny]

If the humans at that time had gattline guns and AK 47’s maybe they could have made a dent in the wildlife population but only someone entirely stupid would say humans with spears caused their extintion...Its amazing how stupid some people are...

[rawhide]

Yet mysteriously, sometime during the last 100,000 years, they disappeared forever.

No mystery. The Great flood killed them all. Read the book of Genesis!

[Little Bill]

Rupp at the University of Chicago had a study done during the Dino Killer contravertisity. They found that something kills off a whole lot of things about every 20 million years with a bunch of not so major killings scatted in between, I will look for a reference.