Link: Do Humans Have Reptilian Scales?

A question submitted by none other than yours truly that got answered. (Not incredibly satisfactorily, but nevertheless) The question pertained to the evolution of finger nails. Most directly I asked if our finger nails were twenty reptilian scale remnants. Read for 2 biologist's response.

http://www.askabiologist.org.uk/answers/viewtopic.php?id=3970