8th January, 2013
Thousands of small dinosaur tracks found in fluvial silts and sandstones in Queensland have been interpreted as scratch marks caused by swimming individuals.
Researchers said some tracks appear as ‘tippy-toe’ traces – near vertical scratch marks made by fully buoyed dinosaurs as they propelled themselves through the water.
Similar looking traces made by widely different sized dinosaurs may suggest a variable depth of water in the river. The tracks include wading traces from much larger animals.
The tracks run parallel with the direction of flow – the animals were moving downstream, perhaps travelling with the assistance of the water flow.