Did people use to think oil is from dead dinosaurs? What is the latest theory on how oil and coal were formed

Is it wrong to refer to oil and coal as fossil fuel if they have nothing to do with dinosaurs? Did geologists think that craters on the moon and earth were dormant volcanoes? Were India and Australia close to each other many millions years ago? If the Indian sub-continent keeps moving north, how tall will Mount Everet get?Did people use to think oil is from dead dinosaurs? What is the latest theory on how oil and coal were formed
no, not from big dinos





hydrocarbons mature from kerogens - these are organic compounds that are classified into 3 primary types, based on the ratio of hydrogen to carbon





type 1 is sourced from algae, bacteria, etc...lipid-rich, prone to mature into liquid hydrocarbon (oil)





type 2 and 3 and beyond are sourced more from plant material, and are prone to producing gas or coal





these kerogen sources mature into produceable hydrocarbon with a combination of 1) heat 2) pressure and 3) timeDid people use to think oil is from dead dinosaurs? What is the latest theory on how oil and coal were formed
I'll answer your first question - you really should put the others in separate questions!





fossils are not just dinosaurs and shells and stuff, they are;





';the mineralized or otherwise preserved remains or traces (such as footprints) of animals, plants, and other organisms.';





Coal and oil are just organic remains that have been heated and compressed. So they are, technically speaking, fossils.
I've always learned that oil is made by organic materials such as plants and animals getting squished together and the heat and pressure oil-ify's them. I never understood it better than that, cuz they taught that to us in fourth grade (i'm in college now) and the teacher was kind of a prat.


But yeah, is that wrong??