The humerus is your upper arm bone. It is the longest bone in the upper part of your body and is connected to many important tendons and ligaments. The top of the humerus is part of the shoulder ...

A small bone found 30 years ago at Dinosaur Cove could revolutionize our understanding of echidnas and platypuses' evolution.

There is one radius (R1) and one ulna (U1); these are the two bones that connect the wrist and elbow. There are two humerus bones (H1 and H2). The humerus connects the shoulder and the elbow.

A controversial idea suggests the ancestors of echidnas were more like the platypus. For the first time, fossil evidence ...

As the world's only surviving egg-laying mammals, Australasia's platypus and four echidna species are among the most ...

A small bone found 30 years ago at Dinosaur Cove in south eastern Australia could turn what we know about the evolution of echidnas and platypuses on ...

Everything about the anatomy of a bird reflects its ability ... muscles of the wing are also highly specialized. The main bone, the humerus, which is similar to the upper arm of a mammal, is ...