Was the bison’s peculiar chest a design feature ... to help Native North Americans survive?
Some of my friends are creationist biologists, and one, Norbert Smith (now retired), writes to say,
One of the neatest evidences I see of God in Creation is the bison...with an incompletely divided mediastinum. As far as I know, it is the ONLY mammal like this and enabled native Americans to feed their families with one arrow anyplace in the chest...collapsing BOTH lungs. This obviously has NO selective advantage and should have been eliminated by natural selection. God created them special to feed a people.
Of course, if God had really cared about native Americans, he might have given them immunity to smallpox. Kind of a glaring oversight, wouldn't you say?
AFTERSNARK: The cracker-hating PZ is on the case.