When Dinosaurs Ruled The Water

Like modern birds such as Aptenodytes forsteri (1), semiaquatic adaptations can be found in other Mesozoic theropods. Spinosaurus aegyptiacus (2), took advantage of these adaptations to bypass its bauplan constraints and develop larger dimensions like the MSNM V4047 (3) specimen. According to the fossil record of Halszkaraptor escuilliei (4) this little dromaeosaurid probably behaved like a modern swan, while the avialae Hesperornis regalis (5) was a formidable swimmer not that different from a cormorant.