I believe a lot of the popularly-imagined connection between decomposed dinosaurs and petroleum deposits came from a tongue-in-cheek humorous advertising/marketing campaign by Sinclair Oil Company in the Fifties and Sixties. Serious people even then were talking more in terms of hundreds of millions of years of decomposed plants plus thousands of millions of years of decomposed algae and bacteria, all subjected to more millions of years of heat and pressure under anaerobic conditions. They didn't need to calculate a shortage of dinosaurs for creating oil deposits, sorry.
All this stuff aside, here's wishing a good holiday to y'all.
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