Texas Family Code - FAM § 160.201. Establishment of Parent-Child Relationship

(1) the woman giving birth to the child;

(2) an adjudication of the woman's maternity; or

(3) the adoption of the child by the woman.

(1) an unrebutted presumption of the man's paternity of the child under Section 160.204;

(2) an effective acknowledgment of paternity by the man under Subchapter D,  1 unless the acknowledgment has been rescinded or successfully challenged;

(3) an adjudication of the man's paternity;

(4) the adoption of the child by the man; or

(5) the man's consenting to assisted reproduction by his wife under Subchapter H,  2 which resulted in the birth of the child.