ornithopod footprint, fossil of a dinosaur track, animals that lived in the jurassic period

ancient animal animals background dinosaur dinosaurs extinct feet foot footed footprint footprints fossil fossils geological geology herpetology historical history jurassic land lived lizard lizards old ornithopod ornithopoda ornithopods paleontology period prehistoric prehistorical prehistory print prints remain remains reptile reptiles reptilian reptilians research rock science specie species stone that time track tracks