aside
A model like that could make one heck of a simulation game.
Choose your planet's mass, element composition, moon(s), distance from the sun, length of day, surface temperatures, time and other variables to see what theoretical life forms evolve.
All kinds of parameters:
-location of life forms. In oceans? On land masses? Subterranean? Atmospheric (floaters)
-bone density/skeletal structure could vary with gravity.
-predation
-intelligence
-impactors
You could have a zoom feature to check in on your progress.
Reminds me of a twilight zone episode I saw...
Rob