Adam and Eve riddle..........?

[duck]

There are two archaelogists and they're digging in a cave and suddenly they come across the door to a tomb. They open the door and inside are two naked, perfectly preserved dead bodies. One archaelogist shouts out "We've found Adam and Eve!" How did they know?
just so you know i know the answer, and first correct answer gets 10 points

 

[Daniel Johnson]

if belly button was right than xXElecTricKXx got it first just in case it only sez the days!

 

[xXElecTricKXx]

They don't have any belly buttons, thus they were never born but were created.