(Pronunciation: GRIP-oh-SORE-us MAHN-you-men-TEN-siss)
Age: Late Cretaceous (~76 million years ago)
Length: 27 feet.
Where It's Found in Utah: Kane and Garfield counties, Grand Staircase-Escalante National Monument, Utah.
Geologic Formation: Kaiparowits Formation (middle unit)
Classification: Ornithischia – Ornithopoda – Hadrosauridae - Hadrosaurinae
Description: Hadrosaurids are often referred to as “duck-billed” dinosaurs because the front of their skull resembles a bill of a duck. Even the name Gryposaurus means “hooked beak lizard.” “Monumentensis” gives credit to Grand Staircase-Escalante National Monument in southern Utah where these animals were found. There are two types of hadrosaurs: those without crests, such as Gryposaurus monumentensis, and those with crests on top of their heads, called lambeosaurines. Gryposaurus monumentensis is unique compared with other species of Gryposaurus in that it the front part of the “beak” rises at a steeper angle. Three to four species of Gryposaurus have been found with a range from as far north as Alberta, Canada, to as far south as Texas, making Gryposaurus the genera with one of the largest geographical ranges. Gryposaurus was a very large duck-billed dinosaur – easily reaching the same size as Tyrannosaurus rex.
See Scale on Photos
Now Over 1,000 Items!
PrehistoricStore.com offers the largest selection of replica fossils and other fossil-related products anywhere in the world!
Download a Full Catalog (3MB PDF)
OVER 260 PAGES OF REPLICAS AND MORE!