The story of how us humans—and other mammals—got our noses may have just gotten more complicated. This is the conclusion of a new study by researchers from Japan who have studied how the face develops ...

First, the upper beak is primarily comprised of a bone called the premaxilla, while a second bone, the maxilla, is greatly reduced in size and contributes to only a small portion of the bony palate.

Birds and plants have a close relationship that has developed over millions of years. Birds became diverse and abundant around 135 million years ago. Shortly after, plants started developing new and ...

Phylogenetic analysis of morphological data proceeds from a fixed set of primary homology statements, the character-by-taxon matrix. However, there are cases where multiple conflicting homology ...