The Discover Secure Online Account Numbers program is once again set to be discontinued while the company reaffirms its $0 fraud liability policy on unauthorized charges.
If your referring the dawn of man, (first upright walking animals  with two legs and two arms), as caveman then the closest ancestor  would be the time relevant species of mâ¦onkey because without  knowing what the missing link between the two is we wouldn't know  that answer.
It's hard to imagine that a clam could be a close cousin to the earthworm, because most familiar molluscs have a highly modified body type. The ancestral mollusc probably resembled a chiton, a flattened worm like animal protected by a dorsal shell. Both molluscs and annelids probably evolved from free-living flatworms.