One creature we thankfully don't have to deal with today, however, is the absolute nightmare beast known as Arthropleura. This giant millipede-like creature lived millions of years ago and ...

Among these ancient creatures was Arthropleura, a remarkable millipede that stretched up to 8 feet in length – making it one of the largest land-dwelling invertebrates ever discovered.

A juvenile Arthropleura reconstructed using fossils discovered in Montceau-les-Mines, France, is shown in this illustration. That's because many of the fossils of the creatures are headless shells ...