Lark Quarry Conservation Park

Lark Quarry Conservation Park, also known as Dinosaur Stampede National Monument, is located in Queensland, Australia, about 110 km (68 mi) southwest of the Western Queensland town of Winton.

Lark Quarry Conservation Park is the site of the world's only known record of a dinosaur stampede. The fossils found here date back either to the Albian or Turonian periods, between 104 to 92 million years ago, and are part of the Winton Formation sandstone. Over thousands of years, the rich river plain with sandy channels, swamps, and lush lowland forest dried up, and the sediment covering the footprints was compressed to form rock.

Traditionally, the account of a predator stalking and causing a stampede of around 150 two-legged dinosaurs is attributed to the formation of these fossilized footprints. Analysis of the sediments indicates that they were deposited by a seasonal watercourse with water flowing at different depths and speeds at different times. The footprints at Lark Quarry were first discovered in the 1960s by station manager, Glen Seymour, in the nearby Seymour Quarry. Palaeontologists from the Queensland Museum, including Mary Wade and Tony Thulborn, and the University of Queensland excavated Lark Quarry during 1976–77. All together they removed more than 60 tonnes of rock and uncovered about 210 square metres of the layer with the fossils, showing about 3300 dinosaur footprints. A sheltering roof was built over the site but did