Sweetwater Crab in "Cave House" a143330875b191b81aec3c67e8c59756 animals that died were buried

animals that died were buried so quickly in the mud

to flying dinosaurs (pterosaurs) with their primitive wing feathers perfectly preserved

such as quartz) during a process called per-mineralization

Shungite is considered to be unique for its healing properties

Sweetwater Crab in "Cave House" a143330875b191b81aec3c67e8c59756 animals that died were buriedCrabs nearest living relatives are scorpions, ticks, and land spiders. They are considered to be living fossils because of the great similarity between modern and fossil forms. Ranging from the Late Ordovician (roughly 450 million years ago) to the present, they are little changed in the last 250 million years.