I t’s not every day that a new dinosaur is discovered, but it is a great day. Paleontologist Paul Sereno experienced one in Niger when his team unearthed what turned out to be a new species of spinosaurus: Spinosaurus mirabilis. They published their findings in the latest issue of Science.

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]]>

A 125-million-year-old dinosaur just rewrote what we thought we knew about prehistoric life. Scientists in China have uncovered an exceptionally preserved juvenile iguanodontian with fossilized skin so detailed that individual cells are still visible.

A groundbreaking dinosaur discovery with just two claws is challenging everything we thought we knew about evolution. This unexpected creature is forcing paleontologists to rethink the development of predatory dinosaurs.

Spinosaurus, the only known semiaquatic dinosaur predator, joins Tyrannosaurus, Giganotosaurus and Carcharodontosaurus among the largest meat-eating dinosaurs.