PARASAUROLOPHUS: GET THE FULL STORY

Living in North America about 75 million years ago, Parasaurolophus had the typical lifestyle of the Hadrosaur Family. Roaming in huge herds of about 10,000 members, He browsed on tasty plants as He migrated across the flatlands from shorelines to higher grounds. A fast Dinosaur, Parasaurolophus could run on two or four legs as He needed to.

The rarest of the Duck-billed Dinosaurs, Parasaurolophus became well-known for his crest, which was the largest of the Hadrosaurs. This crest of Parasaurolophus was a huge pipeline structure that extended back from the back of the top of his head. Using this part of his nose, He would blow air through his crest and make a loud noise much like a fog-horn.

However, Parasaurolophus caused a lot of confusion with his head crest among early scientists. Because of its shape, paleontologists first believed that He used it as a snorkel, while He swam underwater. Other paleontologists thought that Parasaurolophus used his crest as a weapon in mating fights. Only when a team of paleontologists constructed a computer-model of his crest, did they discover that it sounded like a foghorn. Then modern scientists realized that Parasaurolophus used his crest to call his friends as well as to warn them of lurking predators.

In addition, his name “Parasaurolophus” causes confusion with the names of other Hadrosaurs. “Parasaurolophus” which means “Beside Saurolophus (Crested Lizard),” seems to denote a close relationship with that other Dinosaur. But Saurolophus (Crested Lizard) is not a close relative. Saurolophus does have a spike-like crest sticking out of the back of her skull, but her crest is solid. Meanwhile, similarly named Prosaurolophus, who had a small head crest, lived a few million years earlier than either of the two other Hadrosaurs.

            Parasaurolophus teaches you to get the full story before forming a theory or opinion. Collect all the facts and examine everything from all angles first. If you do not know something then say so. You can always find out more, and come to the surprising truth. Consider the silly theories about Parasaurolophus and his crest.

HADROSAUR FAMILY (DUCK-BILLED DINOSAURS): SERENITY

At the end of the Cretaceous Period (about 65 million years ago), the most common Dinosaurs were the plant-eating Hadrosaur Family, who lived throughout Eurasia and North America. Unlike many other Dinosaurs, the Hadrosaurs spent their entire evolutionary lives in one period – the Cretaceous (about 80 million years in duration). These Dinosaurs were in the Order of Ornithischians (Bird-hipped Dinosaurs), and had thick-bodies, stiff tails, and tough beaks. The Hadrosaur Family became well-known for their famous duck-bills, distinctive crests, and remarkable teeth.

            When naturalists first discovered the Hadrosaurs in the 1850s, they were fascinated by the duck-like mouths. Since these Dinosaurs had “duck bills”, the scientists reasoned that They lived like Ducks. However later discoveries proved that these first scientists were mistaken. The Hadrosaur Family were, in fact, land-dwelling Dinosaurs, who roamed in large herds across the flatlands.

            Today, scientists divide the Hadrosaur Family into three groups based on the characteristics of their crests and duck-bills. The first group is the transitional Dinosaurs from the Iguanodon Family to the “true” Hadrosaurs. The second group, the Hadrosaurinae (which includes Hadrosaurus and Maiasaura) has solid or small crests, and wider, more rounded snouts. The third group is the Lambeosaurines, who have hollow crests and shorter snouts. Of this group, Lambeosaurus and Parasaurolophus were known for their “big honking noses.”

            Living in vast herds, the Hadrosaur Family were considered the “Sheep” or “Cows” of the Cretaceous Period, since They browsed on low-lying plants such as berries, ferns, and small pine-trees.  What made the Hadrosaur Family a successful group of Dinosaurs were their teeth and jaws. Their teeth formed a dental battery, with hundreds of teeth, which acted like two rasps grinding against each other. Meanwhile, their upper jaws would swing outward and scrape their teeth against the lower jaw. In this manner, Hadrosaurs could turn their food into mush for easier digestion. (Mammals and Reptiles do not chew their food this way.)

            Enter the peaceful world of the Hadrosaur Family. Imagine a vast herd of Dinosaurs serenely browsing ferns on the flatlands of North America. As They slowly move across the land, various Dinosaurs hoot contentedly to each other. Meanwhile, several Hadrosaurs are on guard for a predatory Tyrannosaur rex. Feel safe and protected amongst these plant eaters. Join Them and be surrounded by the security and peace that Hadrosaurs offer.