S.D. Codified Laws § 23A-32-21

The personal representative of a deceased defendant, if substituted as a party, may continue a pending appeal on behalf of the deceased defendant to the extent that the claim is not extinguished by the death. The personal representative of the defendant's estate may make a motion for substitution, together with a notice of hearing, and shall serve the same on the prosecuting attorney and the attorney general within sixty days of the defendant's death. The court may dismiss any appeal of a deceased defendant in which a motion for substitution, together with notice of hearing and proof of service has not been filed with the clerk of the Supreme Court within sixty days of the defendant's death.