Maehary bonapartei was named by Kellner et al. (2022). It is not extant. Its type specimen is CAPPA/UFSM 0300 (a partial skull, partial lower jaw, some vertebral centra, and a fragmentary scapula). Its type locality is Faxinal do Soturno, Linha São Luiz, which is in a Norian fluvial siltstone/sandstone in the Caturrita Formation of Brazil.