Spinosaurus - Therapod Dinosaurs

spinosaurs have been noted to be associated with the water for a whilert. One thing that's often been is that it has denser bones, what seem to be unusually dense bones for a terrestrial, land living animal. Having heavier bones keeps you from floating and makes it easier so that you're not having to fight your buoyancy to go under. Suca mimus shows none of that bone density in its skeleton which is very even in size,. It has normal, quinquinquimorphic bones for land dinosaurs like trex and other big therapods on land. Doesn't seem like it was adapted for swimming at all.

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