Kanab, Utah- (AP) - Tracks from half a dozen species of dinosaurs turned up in a southern Utah area. An area the size of a football field was closed to protect thousands of three-toed and other tracks.

The tracks were laid down across dozens of layers of rock, revealing a geologic record like the pages from a book.

They include tracks of a sharp-toothed and clawed carnivore, a three-toed crocodile and a large plant-eating species.

Paleontologist Alan Titus said the latest track find is extraordinary for its accessibility and high concentration of footprints.

Southern Utah is known for dinosaur fossils and tracks from the Jurassic period. These animals lived about 190 million years ago in a harsh desert that got intermittent deluges.
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