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.
Description
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.
Contains:
Single, stoppered vial and the history card in full-color artwork.
Please be aware of the nature of these samples:
The layers are siltstone and very soft. When digging for fossils, these different layers are often collected in large jars and later used to create these small sample vials.
6+ Years
Small Parts. Not for children under 3 years.
