The case law across the country is extremely mixed in this scenario. Some states have ruled that an intact married couple can basically elect to raise the child as their own, and the biological father ("bio-dad") has no rights. Others have ruled that a bio-dad always gets to have a finding of paternity -- and concomitant support obligations.
Nevada has no completely on-point case law for this scenario, so I would suggest doing nothing voluntarily (like putting bio-dad on the birth certificate) and wait to see if he files something; if so, consult a family law specialist on all available defenses, and move to dismiss. Meantime, see the various resources posted at http://willicklawgroup.com/paternity/, and at http://willicklawgroup.com/child-custody-and-visitation/.
Answered on Sep 01st, 2013 at 6:20 PM