The pelvic bones of males and females may also be distinctive; females often have a wider "pelvic inlet" (the bony part of the birth canal) that is adapted for giving birth. Body size is estimated ...

However, these bones changes are quite slow, so the age estimates are less precise than for younger people. They are often categorised as either ‘young’ (20-35 years), ‘middle’ (35-50 years) or ‘old’ ...

As part of your pregnancy journey ... SPD occurs when the ligaments that otherwise keep the pelvic bones aligned become too ...

The very first fossils of this species -- found by paleoanthropologist Donald Johanson at Hadar in 1973 -- were the parts of a ... Lucy's pelvic, hip, and leg bones offered more proof.