Recently discovered bird fossils are about 20 million years older than the fossils of the birdlike dinosaurs from which the birds are generally claimed to have descended. So these newly discovered fossils show, contrary to the account espoused by most paleontologists, that no bird descended from any dinosaur. The reasoning in the argument is flawed in that the argument ['draws a generalization that is broader than is warranted by the findings cited', 'ignores the possibility that dinosaurs and birds descended from a common ancestor', 'fails to consider the possibility that dinosaurs descended from birds', 'attacks the adherents of the opposing view personally instead of addressing any reason for their view']