Ok, so, I wasn't sure what I could write that could even possibly follow up the Monk-Troll, but I figured this would work.
Saber Toothed Squirrels. When the movie Ice Age came out, scientists were miffed because saber toothed squirrels weren't a thing and that was ridiculous to them.
Then they found one themselves and had to slink back to their labs in shame because apparently they did exist. Oops.
In their defense though, the fossil that was found is alot older than the ice age, and there's no way they could hang out with a smilodon or mammoth, and is very similar to a squirrel, but not actually a squirrel. It's a Dryolestoid, which is a group of mammals that ran around with dinosaurs and lived 50-200 million years ago, ish. We don't have a lot of information about them because their fossils didn't survive well, but that's a matter for a different time.
The fossil they found is for a, approximately, 94 million year old mammal that they believe ate insects and ran around with dinosaurs. It was 4-6 inches long and lived in what is now South America. It was found in what is now a desert, but they think was once a floodplain, teeming with life and possibly periodic flooding that buried the Cronopio dentiacutus, as it was named.
Since we don't have pictures and the fossil is destroyed enough that it wouldn't show much unless you know it, here's a picture from the Live Science article, link below, of what an artist thinks it would look like.
So, if you want to know more, there are sources below or you can investigate more on your own. Personally, I'm going to go watch Ice Age again because it's cute and Scrat is less scary than the squirrel here that looks like it's ready to take me on even though it's tiny...
Sources:
Live Science-- Saber Toothed Squirrel
Science Shot-- Saber Tooth Squirrel
National Geographic-- Ancient Saber Toothed Squirrel Found
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