“This study demonstrates that eggshell biocalcite from non-avian dinosaurs, birds, and other egg-laying vertebrates has the potential to serve as a reliable geochronometer in Mesozoic and Cenozoic ...

Scientists have unearthed a fearsome new dinosaur species in a remote part of the Sahara Desert after it lay there hidden for 95 million years. The prehistoric predator, now named Spinosaurus ...

Paleontologists have discovered a new species of Spinosaurus, Spinosaurus mirabilis, in the remote Sahara Desert of Niger.

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

Scientists discovered a new ‘giant’ crustacean species inside an Australian cave — a 6-millimeter creature armed with teeth and up to 11 claws.

Could Spinosaurus swim? A new fossil with a scimitar-like head crest provides new evidence on the unsettled question.

For more than a century, paleontologists have been piecing together how the mysterious predator Andrewsarchus is related to ...

After posting images of the stone on a fossil identification page on Facebook, she came to the conclusion that it was an ancient marine mammal called a crinoid.

The unusual looking fossil is estimated to be a few hundred million years old dating to the Carboniferous period.

This football-sized creature could grind its teeth like a hard-core plant-eater, back before that was really a thing — and it ...

Millions of years ago much of Mississippi was underwater and dugongs, sometimes called sea cows, roamed the warm coastal waters.