Notoceratops

Notoceratops is known from only one incomplete, toothless lower jawbone, and that bone has been lost, so scientists can only study drawings and descriptions.1

The name means 'southern horned face', because it was found in the Southern Hemisphere and was first thought to be a horned dinosaur.1

It lived about 72 to 66 million years ago, during the Maastrichtian age of the Late Cretaceous.2

Some scientists think Notoceratops might actually be a hadrosaur, a duck-billed dinosaur, instead of a horned dinosaur.1

The discovery of another possible horned dinosaur in Australia, called Serendipaceratops, made some scientists think again about Notoceratops being a horned dinosaur.1

A 2014 study looked at the published information about Notoceratops and said the jawbone did have features like a horned dinosaur.1