PER CURIAM: Errol Turner appeals the district court’s order construing his Fed.R.Civ.P. 60(

b) motion as an unauthorized successive motion filed under 28 U.S.C. § 2255 (2000), and dismissing the motion for lack of jurisdiction. An appeal may not be taken from the final order in a § 2255 proceeding unless a circuit justice or judge issues a certificate of appealability. 28 U.S.C. § 2253(c)(1) (2000). A certificate of appeal-ability will not issue absent “a substantial showing of the denial of a constitutional right.” 28 U.S.C. § 2253(c)(2) (2000).

A prisoner satisfies this standard by demonstrating that reasonable jurists would find that his constitutional claims are debatable and that any dispositive procedural ruling by the district court is likewise debatable. See Miller-El v. Cockrell, 537 U.S. 322, 336, 123 S.Ct. 1029, 154 L.Ed.2d 931 (2003); Slack v. McDaniel, 529 U.S. 473, 484, 120 S.Ct. 1595, 146 L.Ed.2d 542 (2000); Rose v. Lee, 252 F.3d 676, 683 (4th Cir.2001). We have independently reviewed the record and conclude that Turner has not made the requisite showing. Accordingly, we deny a certificate of appealability and dismiss the appeal.

We also construe Turner’s notice of appeal and informal brief as an application to file a second or successive motion under 28 U.S.C. § 2255. See United States v. Winestock, 340 F.3d 200, 208 (4th Cir.2003). In order to obtain authorization to file a successive § 2255 motion, a movant must assert claims based on either (1) a new rule of constitutional law, previously unavailable, made retroactive by the Supreme Court to cases on collateral review, or (2) newly discovered evidence sufficient to establish that no reasonable factfinder would have found the movant guilty of the offense. 28 U.S.C. § 2255 ¶ 8.

Turner’s claims do not satisfy either of these standards. We therefore decline to authorize a successive § 2255 motion. We dispense with oral argument because the facts and legal contentions are adequately presented in the materials before the court and argument would not aid the decisional process. DISMISSED