The two pectoral fins on a fish are a clear indication that fish are our bipedalar ancestors. Just think how many millions of years it took for that unintelligently undesigned process to work itself out!
Another word you don't understand: pectoral.
um, Fester?
I do hope you were joking.
the "pectoral girdle" and associated extremities in non-primates are analogous to the primate shoulder-collar-arm assembly.
we don't walk on our hands.
you might, but we don't.