Chewing versus sex in the duck-billed dinosaurs

The duck-billed hadrosaurs walked the Earth over 90-million years ago and were one of the most successful groups of dinosaurs. But why were these 2-3 tonne giants so successful? A new study, published in Paleobiology, shows ...

Most complete study on Europe's greatest hadrosaur site published

The Basturs Poble site is what is known in English as a bone bed, a geological stratum containing a great number of fossils. The stratum dates back some 70 million years. It is the only one to have been found in Europe exclusively ...

Paleontologists reappraise description of duck-billed hadrosaurs

The duck-billed dinosaurs (hadrosaurs) may not be as glamorous as tyrannosaurs (and most tyrannosaur researchers sure don't respect these "Cretaceous food items" anyhow), but in many ways they are a far more interesting and ...

Duck-billed dinosaurs were no sitting ducks, research shows

If you ever find yourself wandering lost in Jurassic Park or time-warped back 70 million years, University of Alberta paleontologists Scott Persons and Phil Currie are two guys you would want with you. The two scientists ...

Thick-skinned dinosaur gets the last laugh

(Phys.org) —In life, Tyrannosaurus rex usually got the best of the less fearsome duck-billed dinosaurs, or hadrosaurs: T. rex ate them.

US returns more Mongolian dinosaur bones

Mongolia may need to rustle up some more glass cases for its first dinosaur museum after US authorities announced Friday they will hand back a large new collection of stolen fossils.

A T-Rex of an idea: Dinosaur milk?

(Phys.org)—Did dinosaurs lactate? It's a question physiology expert Professor Paul Else has been pondering for years –15 years in fact.

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Hadrosaurid

Bilateria

Hadrosaurids or duck-billed dinosaurs are members of the family Hadrosauridae, and include ornithopods such as Edmontosaurus and Parasaurolophus. They were common herbivores in the Upper Cretaceous Period of what are now Asia, Europe and North America. They are descendants of the Upper Jurassic/Lower Cretaceous iguanodontian dinosaurs and had similar body layout. They were ornithischians.

Hadrosaurids are divided into two principal subfamilies. The lambeosaurines (Lambeosaurinae) had hollow cranial crests or tubes, and were generally less bulky. The saurolophines, identified as hadrosaurines in most pre-2010 works (Saurolophinae or Hadrosaurinae), lacked hollow cranial crests (solid crests were present in some forms) and were generally larger.

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