Almost The End Of The World

I tossed the dust of you out the window of the car, ashes mixing with the dirt and the sand. Hard white bone fragments being powdered by the tires of trucks rolling over dead asphalt, grains of dinosaurs, grains of the beach sand where the animals played, grains of lizards suckling their mothers' breasts while the asteroid fell from the sky....Ashes, dust and sand, is there anything else left behind? Please?