Spinosaurus was most probably the largest meat eater ever to walk the earth. It was a bipedal dinosaur with a crocodile-like head and a sail running down its back.
Spinosaurus lived in the large tidal floodplains and mangrove forests present in the area which we know now as the Sahara Desert.
Spinosaurus had large, straight teeth, which were excellent for skewering slippery fish.
Spinosaurus' nostrils faced forwards, much like a crocodile, which would have been a useful adaption for hunting in the water.
Spinosaurus was first described by German palaeontologist Ernst Freiherr Stromer von Reichenbach from a fossil found in 1912 by Richard Markgraf in central Egypt. Sadly, on 24 April 1944, a British bombing raid destroyed these and many other fossil specimens. So you could say that Spinosaurus was lost twice: once when it went extinct and the second time in 1944 as the result of a bomb.
Height: 7m (22.96ft)
Length: 17m (55.76ft)
Weight: 20 tonnes (22.4 short tons)
Top speed: 40kph (24.85mph)
Vision: Spinosaurus most probably had binocular vision to judge distance and time its attacks on its fishy supper.
Skin: Spinosaurus had long spiky vertebrae rising from its back, which would have supported a sail of skin.
Brain: Spinosaurus was an advanced theropod so we can assume that it had a high IQ for a dinosaur.
Prey: Spinosaurus was adapted for hunting fish, but it would have taken land animals too. The fossilised remains of Iguanodon have been found near the giant theropod's stomach.
Bite: Spinosaurus had a secondary palate so that it could eat and breathe at the same time, just like a crocodile.
Nest: Spinosaurus eggs are assumed to fit the usual theropod pattern of being bird-like in shape, measuring between 10 and 15cm (4-6in) long and having a shell a couple of millimetres (0.07in) thick.