BIGGER BIRTHS. “With their innominate decoupled from the vertebral column, the birth canal in basilosaurids may have been considerably larger than that in protocetids. This would have permitted birth of larger, more precocial infants, and we would predict that a near-term basilosaurid fetal skeleton, if found intact, would be positioned to be born tail-first as is seen in living whales.” (Innominate are bones of the pelvis).
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0004366
linkedin post 2022-06-29 05:12:48
Nigel Fleming
September 21, 2022