Evolution
Interesting posts on evolution and stuff.
“Well, remember how recently Schweitzer and Horner found some interesting bone matter pertaining to tyrannosaurids?Well, they held back a bit because there was something REALLY weird in there they wanted to go over.Do you know what it was?It was a special layer inside the femural bone, a calcium-rich layer that lines the marrow and is tied into the egg laying process.It's called the medullary bone.But guess what?Only birds have medullary bone. No other animal group that lays eggs (or doesn't...