Hip bone muscles. Monotremes and marsupials also possess a fourth pair of bones, the prepubes or "marsupial bones", which extend forward from the pubes, and help to support the abdominal muscles and, in marsupials, the pouch. In placental mammals, the pelvis as a whole is generally wider in females than in males, to allow for the birth of the young. The pelvic bones of cetaceans were formerly considered to be vestigial, but they are now known to play a role in sexual selection. Hip bone The hip bone (os coxa, innominate bone, pelvic bone or coxal bone) is a large flat bone,
Bones of the Earth Bones of the Earth Bones of the Earth is a 2002 science fiction novel by Michael Swanwick. It was nominated for the Nebula Award for Best Novel in 2002, and the Hugo, Campbell, and Locus Awards in 2003. Expanded from his Hugo Award-winning story "Scherzo with Tyrannosaur", "Bones of the Earth" spans geologic time, not just centuries but millennia, from the pre-historic past to the distant and unknown future. Most of the novel's events take place in the age of the dinosaurs. The "bones" of the title refer to the time traveling team players described in the story that study