Neanderthal man, long extinct as a separate human group, now explains why we smoke and drink to excess…
Even though the differences appear superficially striking, they do not involve any novel body plans (i.e., no new proteins, new tissues, or new organs).
Whenever you find papers and articles dealing with the Cambrian fossil record in the usual science journals, there are commonalities.
I believe the intelligent design perspective may offer insight into the peculiar inability of central nervous system tissue to regenerate.
Consideration of the basic characteristics of nerve impulse propagation suggests that the speed of conduction in mammals is close to the maximum possible.