N.M. Stat. § 45-2-302
Omitted children.
A. Except as provided in Subsection B of this section, if a testator fails to provide in
his will for any of his children born or adopted after the execution of the will, the omitted
after-born or after-adopted child receives a share in the estate as follows:
(1)
if the testator had no child living when he executed the will, an omitted
after-born or after-adopted child receives a share in the estate equal in value to that
which the child would have received had the testator died intestate, unless the will
devised all or substantially all of the estate to the other parent of the omitted child and
that other parent survives the testator and is entitled to take under the will; or
(2)
if the testator had one or more children living when he executed the will
and the will devised property or an interest in property to one or more of the then-living
children, an omitted after-born or after-adopted child is entitled to share in the testator's
estate as follows:
(a) the portion of the testator's estate in which the omitted after-born or after-
adopted child is entitled to share is limited to devises made to the testator's then-living
children under the will;
(b) the omitted after-born or after-adopted child is entitled to receive the share
of the testator's estate, as limited in Subparagraph (a) of Paragraph (2) of Subsection A
of this section, that the child would have received had the testator included all omitted
after-born and after-adopted children with the children to whom devises were made
under the will and had given an equal share of the estate to each child;
(c) to the extent feasible, the interest granted an omitted after-born or after-
adopted child under this section must be of the same character, whether equitable or
legal, present or future, as that devised to the testator's then-living children under the
will; and
(d) in satisfying a share provided by Paragraph (2) of Subsection A of this
section, devises to the testator's children who were living when the will was executed
abate ratably. In abating the devices of the then-living children, the court shall preserve
to the maximum extent possible the character of the testamentary plan adopted by the
testator.
B. Subsection A of this section does not apply if:
(1)
it appears from the will that the omission was intentional; or
(2)
the testator provided for the omitted after-born or after-adopted child by
transfer outside the will and the intent that the transfer be in lieu of a testamentary
provision is shown by the testator's statements or is reasonably inferred from the
amount of the transfer or other evidence.
C. If at the time of execution of the will the testator fails to provide in his will for a
living child solely because he believes the child to be dead, the child is entitled to share
in the estate as if the child were an omitted after-born or after-adopted child.
D. In satisfying a share provided by Paragraph (1) of Subsection A of this section,
devises made by the will abate pursuant to Section 45-3-902 NMSA 1978.