Neosauropoda is quite plausibly the clade of dinosaurs with the largest body sizes ever to have existed. The few exceptions of smaller size are hypothesized to be caused by island dwarfism, although there is a trend in Titanosauria towards a smaller size. The titanosaurs, however, were some of the largest sauropods ever. Other than titanosaurs, a clade of diplodocoids, a group of giants, called Dicraeosauridae, is identified by a small body size. No sauropods were very small, however, for even "dwarf" sauropods are larger than , a size reached by only about 10% of all mammalian species.