Tetragonolepis (from Greek, Modern (1453-);: τετρα, 'four', Greek, Modern (1453-);: γονή, 'angle', and Greek, Modern (1453-);: λεπίς 'scale')[1] is an extinct genus of bony fish belonging to the family Dapediidae that lived during the Rhaetian–Hettangian ages (latest Triassic to earliest Jurassic).