21 Mind-Blowing Lifeforms That Are Now Extinct

This week, we're back on location at The Field Museum in Chicago with special guest host Emily Graslie of The Brain Scoop. You can see all of Emily's videos here.

Don't miss an episode of mental_floss on YouTube—subscribe here!

[Images and footage provided by Shutterstock.]

More from mental_floss...

March 19, 2014 - 11:00am
submit to reddit