Information about Deinosuchus

Deinosuchus Fossil range: Late Cretaceous
Deinosuchus hatcheri Deinosuchus hatcheri
Scientific classification
Kingdom: Animalia Phylum: Chordata Class: Sauropsida Order: Crocodilia Suborder: Eusuchia Superfamily: Alligatoroidea Genus: Deinosuchus Holland, 1909
Species
D. hatcheri (type) D. riograndensis D. rugosus

Deinosuchus is an extinct genus of alligatorid from the Upper Cretaceous (Campanian) of North America. It was thought for several decades to be the largest crocodilian that ever lived. Deinosuchus is known mainly from skull material, and recent studies have reduced its estimated length. Some other giant crocodilians, including Sarcosuchus (the "SuperCroc"), Purussaurus and Rhamphosuchus, were as big or bigger, but accurate comparisons are difficult as Sarcosuchus is the only species known from a largely-complete skeleton.

Size

The skull of Deinosuchus measures more than 2 m (0 ft) from front to back and has a broad rather than narrow snout. Recent studies have reduced the estimate of the animal's total length from more than 15 m (0 ft) to between 10 and 12 m (33 and 40 ft respectively). Even at this reduced estimate, Deinosuchus was still considerably larger than the saltwater crocodile of Australia, Southern and Southeast Asia, which is the biggest living reptile.

Diet and habitat

The proportions of Deinosuchus are similar to the skull of today's Nile crocodile, which is a generalist carnivore that hunts fish, crustaceans, and large mammals, such as wildebeest and zebra.

Deinosuchus probably lurked in rivers and swamps waiting for prey to come and drink from the waters edge (much like modern species). It would then have grabbed its prey in its massive jaws, containing large but somewhat blunt teeth, and then drag it into the water to drown. Perhaps it would have spun lengthways to tear off chunks of flesh (the "death roll" behaviour in modern species). It most likely preyed on fish, dinosaurs (especially the abundant hadrosaurs of the time), and anything else that strayed too close to the water.

Deinosuchus specimens have been discovered in freshwater and marine deposits.

Discovery and classification

The type species, Deinosuchus hatcheri was found by Holland at Willow Creek, Montana, in the Judith River Formation. Specimens from Big Bend National Park in Texas were originally assigned to the genus Phobosuchus in 1954 by Colbert and Bird, but are now assigned to Deinosuchus as the species D. riograndensis. Specimens have also been found in Alabama, Mississippi, Georgia, New Jersey, North Carolina, Wyoming, New Mexico and recently also in Mexico.

Originally classified in the family Crocodylidae, a better skull specimen shows it is likeliest a basal alligator in the superfamily Alligatoroidae.

In popular culture

• Deinosuchus made a brief appearance in the last episode of the TV series Walking with Dinosaurs but played a larger role in the companion book.
• Deinosuchus was the cheif creature in the finale for the ITV series Prehistoric Park.
• An almost blind Deinosuchus named Dil was the principal villain in the movie , along with Ichy, an Ichthyornis with whom she had a symbiotic relationship.
• A grossly-over sized Deinosuchus (around 170 feet long, with a 30 foot head) appears in an episode of SeaQuest DSV.
• Deinosuchus makes several appearences in the popular Zoo Tycoon franchise of video games. includes the crocodillian either by unlocking it with a cheat, or as a scenario reward. Later, Deinosuchus appears in the sequel's expansion pack, .
• A Deinosuchus served as the second boss of the arcade game.

References

• Tracy Ford. February 10, 1998. "Deinosuchus list". Dinosaur Mailing List.