PER CURIAM.
Wilma Pennington-Thurman appeals the district court’s1 preservice dismissal of her *600civil complaint. After careful review, we conclude that the dismissal was proper for the reasons stated by the district court. See Wedow v. City of Kansas City, Mo., 442 F.3d 661, 669 (8th Cir.2006) (res judi-cata applies when there is prior judgment rendered by court of competent jurisdiction, that prior judgment was final and on merits, and it involved same cause of action and same parties or privies; res judi-cata bars claims that were or could have been litigated in earlier proceeding); Black Clawson Co., Inc. v. Kroenert Corp., 245 F.3d 759, 763 (8th Cir.2001) (dismissal based on settlement agreement has effect of final judgment on merits). We do not address Pennington-Thurman’s constitutional challenge to the Older Workers Benefit Protection Act because it was not raised in her brief. See Chay-Velasquez v. Ashcroft, 367 F.3d 751, 756 (8th Cir.2004). Accordingly, we affirm. See 8th Cir. R. 47B.