Dwarf T-rex dinosaurs probably did not exist: study

WASHINGTON: For three decades, paleontologists the world over have been split over a provocative finding: did a dwarf species of Tyrannosaurus rex really once exist? In 1988, paleontologist Robert Bakker and his colleagues at the Cleveland (Ohio) Museum of Natural History reclassified a specimen first discovered in 1942 and displayed at the museum. It was, they said, the first known member of a small new species they baptized as the Nanotyrannus. Then, in 2001, another team discovered the nearly complete skeleton of a small Tyrannosaurus near the town of Ekalaka in Montana, in the rich and intensively studied fossil formation known as Hell Creek. They named the creature -- barely bigger than...