Talking about ancient life and the Paleozoic Era (252 to 541 million years ago) in New Mexico elicits various unexpected responses. Oh, cool! The ancient Puebloans. Well, no. A little further back. Great! Dinosaurs. Charismatic megafauna get all the press, but no, earlier in geologic time. Occasionally, Oh. I tried that diet. No, again. Long before people living the Paleo diet, those who walked through White Sands at the end of the last ice age, and before New Mexico’s famous dinosaurs, the Bisti Beast and Coelophysis (74 and 208 million years ago, respectively), what we now call New Mexico was a dynamic landscape teeming with life.