Did dinosaurs have any relation with dung-beetles?: (The origin of coprophagy)

It is widely accepted that Mesozoic ecosystems were basically similar to Cenozoic ecosystems and it has been proposed that the role of dung-beetles in those ecosystems was identical to that of today, but the dung of dinosaurs were used as a source of food instead of the dung of mammals. While dinosaurs have been known since Triassic, Scarabeids are present in the fossil records probably since Lower Jurassic. But a very important metabolic feature of dinosaurs has not been taken into account, the connection between digestive and uro-genital systems. So here we propose the hypothesis that coprophagy in dung-beetles has been associated, since it began, with mammals.