Titanosaurs (members of the groups Titanosauria and/or Titanosauroidea) were a diverse group of sauropod dinosaurs, which included Saltasaurus and Isisaurus. It includes some of the heaviest creatures ever to walk the earth, such as Argentinosaurus and Paralititan — which might have weighed up to 100 tonnes (110 short tons) or, perhaps, even double that, if some poorly-described data are to be believed (see Bruhathkayosaurus). They were named after the mythological Titans, the early deities of Ancient Greece, who preceded the Twelve Olympians. Together with the brachiosaurids and relatives, they make up the larger clade Titanosauriformes.