Chapter 12: Leatherback
page 187: Odontochelys... P Z Myers addresses the question of how turtles got their shells here.
page 188: Archelon pictured here:
page 191: slow recovery. This can be easily reversed. In Trinidad, for example, baby Leatherbacks died in their thousands after a botched operation to move a river mouth left thousands of eggs and young crushed or eaten by predators.
page 193: gateless gate. See Thoreau:
Time is but the stream I go a-fishing in. I drink at it; but while I drink I see the sandy bottom and detect how shallow it is. Its thin current slides away, but eternity remains. I would drink deeper; fish in the sky, whose bottom is pebbly with stars. I cannot count one. I know not the first letter of the alphabet. I have always been regretting that I was not as wise as the day I was born. The intellect is a cleaver; it discerns and rifts its way into the secret of things.page 195: Wolf Hilbertz. There is an error in the quote. The fifth line should read “...one was deceived into thinking one saw the sky...”
page 195: innumerable universes. See here.