The male pelvic bones are smaller and narrower. The bones of the pelvis are the hip bones, sacrum, and coccyx. Each hip bone contains three bones — the ilium , ischium , and pubis — that fuse ...

the pelvic bones form a basin. Four bones come together to form a bowl-like shape, or basin : the two hip bones, the sacrum (the triangle-shaped bone at the low back) and the coccyx (also known as ...

Since evolving from land-dwelling ancestors more than 40 million years ago, whales and dolphins have lost their hind limbs and evolved a highly reduced pelvic (or hip) bone, which seems to serve ...