text: should i be scared of a trilobite?  or  a large occipital protuberance? i think i am thinking of the right terms......     trillobites are scary looking!!! and my occipital bone is huge..   what does it mean?...    is it true about the size of ones occiptial, that you can tell age? if so am i like a thousand years old? trilobites are extinct and have been for millions of years, so no one is eating them lately. they predate humans.  if you mean the bone at the base of your skull, i don't know why this would concern you. certainly, your age is based on your date of birth, like the rest of us, no?