Dinosaur experts say a pair of 130-million-year-old tracks next to a popular Broome boat ramp show the footprints of a brontosaurus-type dinosaur next to a tyrannosaurus-type dinosaur, and has never been documented previously. Key points: A set of dinosaur tracks have been documented for the first time near a Broome boat ramp The theropod and sauropod tracks are about 130 …