Some Shellies got sent back in time to a place they think is very... VERY far in the past. They have been able to blend in as some of the local creatures by putting on some pointy defenses in case anyone or... anything finds them before they can find their way back home.Shellies think the local creatures they mimicked are Ankylosaurus-es. They were dinosaurs that had heavy coats of armor that could take the form of pebble-like dots to massive spikes and even club tails to protect themselves from predators. Those guys were round about 165 million years ago... which means Shellies are gonna be VERY late for pizza night.