To trace tusk evolution, researchers needed a more concrete definition to distinguish tusks from teeth and other external ...

Scientists have uncovered a remarkable fossil from Canada's Burgess Shale, a discovery that reshapes how the evolution of ...

A newly described species from the Burgess Shale had three eyes, clawed limbs, and a tail full of gills—plus internal organs preserved in stunning detail.

Paleontologists recently discovered a 506-million-year-old “moth-like” predator that lurked in prehistoric Canada. In a press ...

Pharynx anatomy consists of three ... The nasopharynx starts at the back of your nasal cavity and stretches down to the roof of your mouth. It connects the nose and mouth but doesn’t include ...

"These new specimens not only preserve the antennae and walking legs, but also mouth structures and even ... and Gigoutella mauretanica, dating back to 509 million years ago.