Florida Museum of Natural History

Let's look at a hypothetic fossil locality to see this process in action.

diagram of sea bottom

100 million years ago

Scallops and other invertebrates inhabit the sea in this area.

When they die, they are covered by sand that settles on them.

dinosaur living on sandstone

75 million years ago

Pressure compacts the loose sandy sediments into hard sandstone.

Dinosaurs now live, and die, in the locality. Like the scallops before them, their bodies are covered by sand..

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