Not a good idea to spend too much time researching your family tree. Most of us are likely to find a few ancestors hanging from the branches.
This sad little lizard told me that he was a brontosaurus on his mother's side. I did not laugh; people who boast of ancestry often have little else to sustain them. Humoring them costs nothing and adds to happiness in a world in which happiness is always in short supply.
Lazarus Long
Not all of our ancestors were perfect ladies and gentlemen. In fact, some of them weren't even vertebrates.