Arthropleura

Arthropleura was a giant millipede-like creature. When reared up, it could reach the size of a grown man.

Arthropleura was also possibly the largest land arthropod of all time. Its jaws were designed to tackle vegetation, but occasionally it could have used them to tear apart smaller creatures.

Arthropleura thrived in the coal forests of the Carboniferous, as with other bugs. The rise of oxygen meant they could reach bigger sizes. Arthropleura had few enemies, but could have battled giant amphibians such as Proterogyrinus.