Dinosaur Eggshell fossil

Discovered in Patagonia Cretaceous period  Ok, come on. How can anyone not think these are cool? They are literally fossilized dinosaur eggshell fragments! If, for some reason, you’re among those not in the ‘these are awesome’ camp, let us explain why these textured fragments are a must-have in any collection. Fossilized dinosaur eggshells are like time capsules from millions of years ago, giving us clues about how dinosaurs lived, nested, and what their world was like. These ancient shells, preserved through mineralization, help scientists determine which dinosaurs laid them, how their babies developed, and their connection to modern birds. Dinosaur eggs fossilize through permineralization, a process where minerals gradually replace the original material over millions of years. This happens when an egg is quickly buried by sediment, preventing decay. Over time, mineral-rich water seeps in, hardening the shell as layers of sediment build up. The texture, thickness, and microscopic deta