Praearcturus gigas: giant scorpion from Lower Devonian (Lochkovian) of Britain

I'll admit all I really wanted to know what how big this darn this was and I couldn't find it in the paper. I looked it up and it is about three feet/one meter.

"lateral epimera on the mesosomal tergites"

Sideways outerparts on the midbody backparts, I see, I see.