Sauropods(lizard footed dinosaurs), the largest land animals in earth's history, walked on four stout legs and ate plants. The brachiosaurus and Apatosaurus belong to this category.
"The nice thing is we finally filled in a bit of a blank spot in the dinosaur map," said Anne Schulp, a palaeontologist at the
"Until 10 years not even bones were known from the
The footprints dating from about 150 million years ago showed the sauropods traveling at the same speed along a river, likely in search of food, Schulp said in a telephone interview.
The creatures roamed the Earth from about 228 million years ago to 65 million years ago, the middle of the age of dinosaurs.
The well-preserved tracks, found about 50 miles north of
Paleontologists have so far unearthed only a few dinosaur fossils from the Arabian peninsula and possible fragments of a long-necked dinosaur from