Snyron

Having been pushed to extinction in both the cave and alpine regions, the Ferrumworm needed to move to find new, more plentiful food sources. Thus the Syron evolved, replacing its ancestor. Overtime, its legs developed in a way to allow for faster and easier movement to and from food sources as amounts of iron in the sediment fluctuated. At the same time, it's body lengthened to accommodate it's new mode of transportation. As a substitute for iron in areas lacking, they turned to extracting carbon and other minerals from carcasses much the same way they do with iron in the ground. Spending more time on the surface, their armor developed to be stronger and cover more area, while other non-ferrous metals ingested desaturated the rust red color of it. Living in small burrows, they breed by splitting off their back pair of legs and their tail, which will eventually regrow. This severed section will soon grow it's own nostrils for locating iron and grow in length as well as gain length before becoming a full sized Snyron ready to reproduce.