"The tracks provide a snapshot, a census if you will, of an extremely diverse dinosaur fauna," lead author Steve Salisbury, a paleontologist at the University of Queensland, told the Gizmodo website.
"Twenty-one different types of dinosaurs all living together at the same time in the same area. We have never seen this level of diversity before, anywhere in the world. It's the Cretaceous equivalent of the Serengeti. And it's written in stone."
There are thousands of marks along the 24km stretch of coastline, called Walmadany by the indigenous Goolarabooloo people and labelled James Price Pt on most maps. Salisbury likened the region to "Australia's own Jurassic Park".
The Goolarabooloo have known about the fossil trackways for millennia. The massive markings, which are visible only at low tide, are featured in Goolarabooloo oral histories, or "song cycles", Salisbury told the BBC.
"They relate to a creation mythology, and specifically the tracks show the journey of a creation being called Marala - the emu man. Wherever he went he left behind three-toed tracks that now we recognise as the tracks of meat-eating dinosaurs," he said.
In 2008, Walmadany was selected as the preferred site for a natural gas plant. Worried that the sacred and scientifically significant site would be lost, the Goolarabooloo asked paleontologists to look into the tracks.
"We needed the world to see what was at stake," Goolarabooloo leader Phillip Roe said.
The area was listed as a natural heritage site in 2011, and plans for the natural gas plant fell apart two years later.
Working alongside the Goolarabooloo, who are considered the region's "traditional custodians", Salisbury and his colleagues spent 400 hours investigating the markings. Each one was measured with three-dimensional photogrammetry, a technique used to build a 3D reconstruction of an object by taking photographs from a variety of angles. For some tracks, the scientists also made casts out of flexible silicon, which can later be used to produce museum replicas of the prints.
According to Salisbury, most other Australian dinosaur fossils come from the continent's eastern side and date back to the mid-Cretaceous, about 90 to 115 million years ago. These tracks, which are between 127 and 144 million years old, represent the only fossil evidence from the early Cretaceous and are some of the oldest dinosaur remains in Australia, he said.