No one who knows anything has ever claimed that any useful quantities of oil come from dead dinosaurs. It is almost certain that somewhere a dinosaur may have died in a swamp or sunk to the bottom of the ocean, and its remains mixed with other dead organisms, but it feeds a third grader's (mis)understanding of the phrase "fossil fuel" to refer to dead dinosaurs.

Again, there is no evidence to suggest that there are any economically exploitable abiogenic oil deposits. As with all true science, this is open to future question and testing.

I stand by the phrase absolutely incorrect, because it referred to your statement that coal is a fossil fuel, but oil is not. That statement is, in fact, absolutely incorrect.