Thursday, October 24, 2013
A Nervous System Half a Billion Years Old
Not Exactly Rocket Science, compares the nervous system of Alalcomenaeus (pop) with that of a larval horseshoe crab; you can see that the basic plan of the arthropod nervous system had been established by 500 million years ago. Actually arthropods have two different nervous system plans, and we know now that both plans existed by 500 million years ago.
It astonishes me that we can know such things about animals that lived in such a remote world.