More than 100 dinosaur footprints at least 150 million years old have been found within a 40-square-meter field in northwest China's Shaanxi Province.

Experts from the Provincial Cultural Heritage authority confirmed yesterday that the footprints found in Shenmu County belong to two or three different species, according to Sanqing Daily.

Some of the footprints measure 41cm while others are smaller and three-toed, indicating that they came from predators and vegetarians, archeologist Hu Songmei told today's China Business View.

The new tracks add to the fossil evidence of the climate in ancient northwestern China and the evolution of dinosaurs. Hu said such concentrated dinosaur footprints were extremely rare and will help scientists discover critical details about the creatures.

This area could readily yield more track ways, the researchers added.

The footprints were unearthed when a local villager tried to haul rocks from the field.

Hu said the researchers are looking to build a museum to protect the geological find.