As nouns the difference between ornithopod and parasaurolophus

is that ornithopod is a type of bipedal, herbivorous, bird-hipped dinosaur from the Cretaceous period, found on all seven continents while parasaurolophus is genus: Parasaurolophus, a herbivorous ornithopod dinosaur from the late Cretaceous period of what is now North America that walked both as a biped and a quadruped.

As nouns the difference between dinosaur and parasaurolophus

is that dinosaur is any of the creatures belonging to the clade Dinosauria, especially those that existed during the Triassic, Jurassic and Cretaceous periods and are now extinct while parasaurolophus is genus: Parasaurolophus, a herbivorous ornithopod dinosaur from the late Cretaceous period of what is now North America that walked both as a biped and a quadruped.

As an adjective cretaceous

is of or relating to chalk.

As a noun parasaurolophus is

, a herbivorous ornithopod dinosaur from the late cretaceous period of what is now north america that walked both as a biped and a quadruped.

As nouns the difference between biped and parasaurolophus

is that biped is an animal, being or construction that goes about on two feet]] (or two [[leg|legs) while parasaurolophus is , a herbivorous ornithopod dinosaur from the late cretaceous period of what is now north america that walked both as a biped and a quadruped.

As nouns the difference between quadruped and parasaurolophus

is that quadruped is a four-footed or four-legged animal while parasaurolophus is , a herbivorous ornithopod dinosaur from the late cretaceous period of what is now north america that walked both as a biped and a quadruped.

As an adjective bipedal

is having two feet]] or two [[leg|legs; biped.

As a noun ornithopod is

a type of bipedal, herbivorous, bird-hipped dinosaur from the cretaceous period, found on all seven continents.

As an adjective herbivorous

is feeding chiefly on plants.

As a noun ornithopod is

a type of bipedal, herbivorous, bird-hipped dinosaur from the cretaceous period, found on all seven continents.

As nouns the difference between dinosaur and ornithopod

is that dinosaur is any of the creatures belonging to the clade Dinosauria, especially those that existed during the Triassic, Jurassic and Cretaceous periods and are now extinct while ornithopod is a type of bipedal, herbivorous, bird-hipped dinosaur from the Cretaceous period, found on all seven continents.

As a proper noun Cretaceous

is the geologic period within the Mesozoic era that comprises lower and upper epochs from about 146 to 65 million years ago.

As an adjective cretaceous

is of or relating to chalk.

As a noun ornithopod is

a type of bipedal, herbivorous, bird-hipped dinosaur from the Cretaceous period, found on all seven continents.

As nouns the difference between continent and ornithopod

is that continent is an encratite while ornithopod is a type of bipedal, herbivorous, bird-hipped dinosaur from the cretaceous period, found on all seven continents.

As a proper noun continent

is (obsolete) the old world.