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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.

For more information about Hadrosaurid, read the full article at Wikipedia.
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Test shows dinosaurs survived mass extinction by 700,000 years

University of Alberta researchers determined that a fossilized dinosaur bone found in New Mexico confounds the long established paradigm that the age of dinosaurs ended between 65.5 and 66 million years ago.

Other Sciences / Archaeology & Fossils

created Jan 27, 2011 | popularity 4.3 / 5 (16) | comments 16 | with audio podcast

Bye bye 'Hogwarts dinosaur'? New analyses of dinosaur growth may wipe out one-third of species

(PhysOrg.com) -- Paleontologists from the University of California, Berkeley, and the Museum of the Rockies have wiped out two species of dome-headed dinosaur, one of them named three years ago - with great ...

Other Sciences / Archaeology & Fossils

created Oct 30, 2009 | popularity 4.6 / 5 (13) | comments 2

Dino tooth sheds new light on ancient riddle

Microscopic analysis of scratches on dinosaur teeth has helped scientists unravel an ancient riddle of what a major group of dinosaurs ate- and exactly how they did it!

Other Sciences / Archaeology & Fossils

created Jun 29, 2009 | popularity 4.9 / 5 (8) | comments 0

Dinosaurs hop, skip and jump into 21st century

(PhysOrg.com) -- Dinosaurs have literally been put through their paces by a new supercomputer, allowing scientists to get closer to understanding how they once moved.

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created Dec 09, 2009 | popularity 4.3 / 5 (3) | comments 0

Fattysaurus or thinnysaurus? How dinosaurs measure up with laser imaging

(PhysOrg.com) -- University of Manchester scientists are using laser imaging to investigate how fat - or fit - T. rex and his fellow dinosaurs were. Karl Bates and his colleagues in the palaeontology and biomechanics resea ...

Other Sciences / Archaeology & Fossils

created Feb 19, 2009 | popularity 5 / 5 (2) | comments 0

New dinosaur dating technique paper released

Antonio Simonetti, a research associate professor in the Department of Civil Engineering and Geological Sciences at the University of Notre Dame, is the coauthor of an important new paper describing a novel ...

Other Sciences / Archaeology & Fossils

created Feb 16, 2011 | popularity 5 / 5 (2) | comments 1

The last European hadrosaurs lived in the Iberian Peninsula

Spanish researchers have studied the fossil record of hadrosaurs, the so-called 'duck-billed' dinosaurs, in the Iberian Peninsula for the purpose of determining that they were the last of their kind to inhabit ...

Other Sciences / Archaeology & Fossils

created Nov 05, 2009 | popularity 4.5 / 5 (2) | comments 0