Both of these dinosaurs were part of the family known as the spinosaurs and both ate fish and had back sails. Now I will list differences. read more
Spinosaurus on the other hand is the largest of the spinosaurs at 13–18 meters estimated for its length. It also had a noticeably bigger spine which stretched much higher. read more
(2005) assumed that Spinosaurus and Suchomimus had the same body proportions in relation to their skull lengths, and thereby calculated that Spinosaurus was 16 to 18 meters (52 to 59 ft) in length and 7 to 9 tonnes (6.9 to 8.9 long tons; 7.7 to 9.9 short tons) in weight. read more