Spinosaurus was one of the strangest looking dinosaurs to ever be discovered. What was this strange animal with huge bones sticking up from its spine? After many years of studying spinosaurus, here are some things that scientists have discovered.How tall was the sail on spinosaurus?Was spinosaurus bigger or smaller than tyrannosaurus rex?Where are the first spinosaurus fossils ever discovered?How many spinosaurus skeletons have ever been found?Learn the answer to these questions and many more fun facts in this 15-Minute Book. Spinosaurus was a strange dinosaur with a huge sail on its back. How much do you know about spinosaurus?The Educational Version has activities that reinforce Common Core Curriculum Standards.LearningIsland.com believes in the value of children practicing reading for 15 minutes every day. Our 15-Minute Books give children lots of fun, exciting choices to read, from classic stories, to mysteries, to books of knowledge. Open the world of reading to a child by having them read for 15 minutes a day.