KP Extinction Layer Sample
Great for dinosaur enthusiasts!
The Cretaceous-Paleogene (K-Pg) extinction event, also known as the Cretaceous-Tertiary (K-T) extinction, was a sudden mass extinction of three-quarters of the plant and animal species on Earth, approximately 66 million years ago. With the exception of some ectotherm species such as the leatherback sea turtle and crocodiles, no tetrapods weighing more than 55 pounds survived. It marked the end of the Cretaceous period, and with it the end of the entire Mesozoic Era, opening the Cenozoic Era that continues today.
Bottom grey layer:
The Cretaceous period, when the dinosaurs still lived.
Middle black layer:
Black KT (Cretaceous-Tertiary) extinction layer contains micrometeorites and iridium, rare on Earth but abundant in asteroids.
Top brown layer:
when new life arose following the dinosaur extinction.
Single, stoppered vial and the history card in full-color artwork.
Please be aware of the nature of fossils:
Being buried under the ground for millions of years under tons of pressure tends to be rough. No fossil comes out of the ground whole and perfect. Most fossils have undergone some restoration, while others are altered by man simply to enhance their presentation in different ways. The workers do a very professional job, unearthing and preserving these natural treasures, however, commonly natural cracks are visible on the surface. These are part of the natural beauty of the fossil and not considered defects.