More evidence that mosquitoes have been assholes for millions of yearsGeorge Dvorsky10/15/13 11:00amFiled to: paleontologymosquitosfossilsbloodancient bloodsciencebiology808EditPromoteShare to KinjaToggle Conversation toolsGo to permalinkContrary to what’s been portrayed in Hollywood films, scientists have never actually been able to recover traces of blood from a preserved insect. This incredible fossil of a 46 million-year-old engorged mosquito has now changed that. But don’t get your hopes up about resurrecting extinct species.AdvertisementUnlike Jurassic Park, this mosquito wasn’t trapped in amber. Rather it was discovered in oil shale in northwestern Montana. When it died, it quickly fell into fine anaerobic sediment, allowing for this pristine preservation.Also unlike Jurassic Park, this mosquito was alive after the age of the dinosaurs, some 19 million years after the end of the Cretaceous — an era paleontologists refer to as the Eocene.Also also, unlike Jurassic Park, scientists know that DNA molecules are too complex and fragile to survive fossilization. DNA also has a very short shelf life. So you can put your cloning kits away.