The horned species, named Spinosaurus mirabilis, had scimitar-shaped crests on the back that were sheathed in keratin. The ...
The dinosaur—likened to a "hell heron"—is believed to have had a bright-colored crest sheathed in keratin atop its head.
Spinosaurus in the Sahara Desert in Niger, a discovery that adds to the debate over whether the prehistoric creatures were fully or semi-aquatic]]> ...
Nyasasaurus parringtoni may take the crown as the oldest dinosaur fossil known to science. It lived during the Middle ...