A level 450 Breedable Island Amargasaurus.
It's no surprise that Amargasaurus' regenerating spines can be put to potent use. If removed early, their thermal storage becomes erratic, which is perfect for catalyzing sap extraction in large trees. Some tribes, inevitably, have adapted this thermal quirk for combat. By coaxing the Amargasaurus to eject a spine before it sheds naturally, the disruptive thermal waves which emanate from the spike can wreak havoc on nearby armor materials. Interestingly, simple armor is barely affected, while armors constructed of more complex attributes are rendered largely useless. Such a strange reaction, but then, little about this particular ARK seems sensible to me.
~ Helena