Fossil Friday!

Last week on Fossil Friday, I diverted from my promise of bone-crushers to give you a sweet coral that couldn't crush a fly (or sea fly!). But I quickly heard howls from the peanut gallery, "We want more toothy creatures!" 

So this week we are back to the scratchers, crushers, biters, and stalkers. This specimen is a good one too; its modern-day relative is still stalking people's toes, leaving presents on doorsteps, and trapping people in their bedrooms requiring police intervention.  

What is this fossil? Hint: the species name is shared by my favorite type of beer. You'll have to tell me what this fossil is, where it was found, and the epoch it came from.

First person to identify it wins bragging rights for the week!