New Jersey Statutes Appendix - Former Title 3A Administration of Estates Decedents and Others 3A § 4-11

If a parent dies testate, any posthumous child, in case no provision is made for him by the will, shall, unless expressly excluded or barred thereby, take and inherit the property, real and personal, of the parent in the same proportion and manner as if the parent had died intestate. The share of any such child shall be taken from the devisees and legatees under the will, ratably and in proportion to their respective interests therein.