The smallest biggest theropod dinosaur
(PHYSorg.com Archaeology & Fossils)

Spinosaurus is the longest, and among the largest predatory dinosaurs, and possesses many adaptations for a semiaquatic lifestyle. A tiny claw phalanx of the foot, discovered in Cretaceous-aged sandstones of the Sahara, shows a peculiar shape compatible with an early juvenile Spinosaurus. As reported in PeerJ-the Journal of Life & Environmental Sciences, the fossil is from the smallest known individual of this giant, sail-backed theropod. The findings suggest the small specimen retains the same locomotor adaptations as the large version-such as traversing soft substrates or paddling-during the entire lifespan.