Look up "Mokele Mbembe," which refers to alleged dinosaur sightings in Africa. These are unproven but are still out there. Bear in mind that it was once thought that the coelacanth fish had been extinct for as long as the dinosaurs, until many specimens were found alive and well. This is not the only such example. See also:
Is there evidence against Evolution?
No, they're all dead.
no they're all dead
No all the dinosaurs were dead by the time of the mammoth.
Because they're all dead.
yes. dinosaurs are reptiles and no reptile can breathe under water.
Dead dinosaurs.
Dinosaurs did not die out because of plants. They died out because of a lack of plants after an asteroid impact blocked out sunlight for months or years. With all the plants dead, the dinosaurs starved.
You cant, their dead
Dead dinosaurs.
they dead...they dont
Considering that most eukaryotic cells have mitochondria and that dinosaurs are eukaryotes like all other animals that ever lived, it is certain that they did have mitochondria in their cells. In fact, birds are considered dinosaurs (they certainly descended from dinosaurs) and their cells have mitochondria, so we can be as sure as scientifically possible that dinosaurs indeed did have mitochondria.
Dinosaurs were all dead long before the Bible was ever written. Even if they weren't, dinosaurs are not believed to have been highly sentient creatures as humans. In fact, their intelligence level was more on the level of birds or mice.