I’d imagine there are millions of incredible dinosaur fossils in the sea floor.

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Most of the period of the dinosaurs happened with higher sea levels than today. I mean dinosaurs that lived in the sea, definitely, as long as they were in the right spot where deposition could happen, but biological resources that hit the ocean floor are often consumed wholesale by the organisms living there. Even most sea dwelling dinosaur fossils are found on land in what used to be areas of fairly shallow seas.

thokim

There’s a few epic archeological sites as well. From ancient cities that sank below the waves, to neanderthal caves hidden below the waves due to rising sea levels.

paleobear1

However, neither salt, pressure or water are known for their preservative properties, so there are a lot destroyed I’m sure.

treelovingaytheist

One of the reasons California isn’t known for a lot of dinosaur fossils is because it was offshore during that time. They have found a few mesozoic critters after the layers of sediment were shoved upwards by plate tectonics, but nothing much in comparison to areas like Kansas & Nevada which were covered by shallow seas then. But considering the entirety of time and area, there are still surely a bunch down there never to be found unless pushed upward by seismic forces. There are actually important archaeology areas that have flooded and remain studiable. Underwater archaeology is actually a thing because of so many flooded finds. My favorite is Bouldnor Cliff, but there are so many. The cold water preserves the remnants while tides and life rip it apart, making some aspects very well preserved and others lost to time.

AlishaV

It’s called oil and coal

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