stackyFACTSWhen an ancient creature died, its original organic skeletal material decayed away entirely. Over millions of years, groundwater seeped into the empty cavities, leaving behind dissolved minerals that eventually hardened into heavy stone replicas of the original skeleton.
Keep exploring facts in this topic.
Science →STACKY FOR IPHONEKeep discovering with Stacky. Interesting facts in an app that is always within reach.
The iconic saber-toothed tiger was surprisingly terrible at actually biting things hard. Its massive, terrifying fangs were incredibly fragile and prone to…
Discover more
Getting turned to stone means successfully avoiding scavengers, bacteria, and erosion against astronomical odds. For every bone dug up, billions of other…
Discover more
If you want to mock a dinosaur for having useless limbs, forget the T-Rex and look directly at Carnotaurus. This aggressive, horned predator was equipped with…
Discover more
Specialists spend decades examining dusty layers of dirt just to figure out where a river used to be. It is essentially the slowest detective work ever…
Discover more
The skies were once absolutely horrifying. Quetzalcoatlus remains one of the largest flying animals in history, a winged behemoth that could stand eye-to-eye…
Discover more
Being wildly huge simply wasn't enough for the most terrifying shark to ever exist. They completely dominated the waters by casually leaving absolutely…
Discover more