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A very large carnivorous theropod dinosaur of the genus Spinosaurus of the Cretaceous Period, characterized by a long narrow snout and long spines on the back that may have formed a sail-like structure.

[New Latin Spīnosaurus, genus name : Latin spīna, thorn + Greek sauros, lizard.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in periodicals archive ?
Ibrahim's presentation, "Spinosaurus: Lost Giant of the Cretaceous," is scheduled March 7.
Spinosaurus, the largest of all carnivore dinosaurs, was adept at catching fish with its long snout Image Credit: Giovan Anthony Paz | Deputy Art Editor
Sitting in front of his living room table, with a thick folder chock-o-block of A4 prints of different dinosaur species, Mohammed is seen confidently calling out the name of each picture, from the Spinosaurus to the Tyrannosaurus Rex.
Eight impressively informative titles debut a new series on dinosaurs for young readers from KidHaven Publishing showcase the Parasaurolophus (9781534523524); Spinosaurus (9781534523555); Stegosaurus (9781534523586); Velociraptor (9781534523609); Diplodocus (9781534521735); Pterodactyl (9781534521759); Triceratops (9781534521766); and Tyrannosaurus Rex (9781534521742).
Peeling back layers that were formed 100 million years ago in the Cretaceous in parts of North Africa yielded evidence of predatory carnivorous dinosaurs like the Spinosaurus (which you may recognise from the Jurassic Park films).
The giant fish-eating theropod Spinosaurus became the first dinosaur known to swim in 2014, and it may have spent most of its time in water.
The app includes 10 types of dinosaurs: Triceratops, Diplodocus, Spinosaurus, Allosaurus, Quetzalcoatlas, Compsagnathus, Parasaurolophos, Stegosauras, Velociraptor and Tyrannosaurus Rex.
Until March 2017, guests can expect to see the likes of Tyrannosaurus Rex, Spinosaurus, Stegosaurus and Triceratops in the newly installed Dinosaur Valley in Singapore Zoo, and some of their wild prehistoric cousins roaming in River Safari.
The Lost World's San Diego T-rex rampage and Jurassic Park III's relentless spinosaurus are chiefly motivated by the necessities of the plot; the closest we come to an explanation for that latter's behaviour is Grant telling a toddler playing with toys, 'These are carnivores.
SEE A DINOSAUR SCARIER THAN T-REX When you're less than 4ft tall, the new 50ft Spinosaurus at West Midland Safari Park is definitely a sight to behold!