Co., 124 F.3d 957 (8th Cir. 1997)(plaintiff's affidavit that contradicted her medical records and other evidence was insufficient to defeat summary judgment); Camfield Tires, Inc. v. Michelin Tire Corp., 719 F.2d 1361 (8th Cir. 1983) (later affidavit inconsistent with earlier deposition cannot create issues of material fact absent evidence of confusion); Prosser v. Ross, 70 F.3d 1005, 1008 (8th Ci