This 70-Million-Year-Old Dinosaur Egg Contained a Sparkling Crystal Surprise.

A grapefruit-sized dinosaur egg from a fossil bed in China gave paleontologists a huge surprise. Rather than a dinosaur embryo or sediment, it was filled with sparkling crystals of calcite lining the inner shell – a natural dinosaur geode

https://www.sciencealert.com/this-70-million-year-old-dinosaur-egg-contained-a-sparkling-crystal-surprise #globalmuseum #dinosaurs #fossils