Myliobatiformes (/mɪliˈɒbətɪfɔːrmiːz/), commonly known as stingrays, are one of the four orders of batoids, cartilaginous fishes related to sharks.[1][2] They are members of the subclass elasmobranchs.[3] They were formerly included in the order Rajiformes, but more recent phylogenetic studies have shown the myliobatiformes to be a monophyletic group, and its more derived members evolved their highly flattened shapes independently of the skates.[4][5]