| The Panda's Thumb, 1980, p | |
|---|---|
| - emphasis added 5 Stephen Gould - Ever Since Darwin p 41 6 B | , Pennsylvania: The Banner Of Truth Trust, 1988 7 Charles Darwin, The Descent of Man, 2nd edition, New York, A L |
Carroll, Patterns and Processes of Vertebrate Evolution, Cambridge University Press, 1997, p.
20