Since they were created by God and did not form in a womb and had no umbilical chord did they have bellybuttons or fingerprints (that are formed by womb pressure) or upper lip ridge which the malach hits the child after birth to forget the torah learned in womb?
In other words, God created Adam as a grown and complete man (cf Rosh Hashana 11a , Chullin 60a, et al). Did this include womb dependent anatomical formations, as well?
There is a midrash that says that Adam and Chavah did not have navels (i.e. bellybuttons.) One should wonder if Chazal meant for any such midrashim to be taken literally. After all, Chazal were interested in teaching Torah; not anthropology.
There are some commentators who ask "If Adam cut down a tree did it have rings" and answer yes. The logic is that everything was formed as if it had grown and become fully mature (fruit trees bearing fruit) through natural means. Similarly, mushrooms were created growing on dead trees so the dead trees had to be created as well. Herd animals had to be created in herds with the appropriate mix of ages. Similarly, passenger pigeons had to be created in flocks of the appropriate sizes.
Thus, the same logic would imply that Adam and Eve were created with navels, etc.
Note that the question was asked in the "Scopes Monkey Trial" by Clarence Darrow but neither he nor William Jennings Bryan understood the question or the answer and what it meant.
