Sentences with phrase «brachylophosaurin hadrosaur»

That layer also contained numerous fossils of Maiasaura, a type of large, herbivorous duck - billed dinosaur, or hadrosaur (SN: 8/9/14, p. 20).

The well - preserved fossil of a plant - eating hadrosaur, complete with skin and tendons, was discovered in 1999.

So Schweitzer took a look at the pristine leg bone of a plant - eating hadrosaur that had been encased in sandstone for 80 million years.

Front to back: Lambeosaurus clavinitelis (a hadrosaur), Chasmosaurus belli, and Styracosaurus albertensis, both ceratopsids (horn - faced dinosaurs).

Dr Albert Prieto - Marquez, Research Associate in the School of Earth Sciences who co-led the research, said: «Some of the immensely successful duck - billed hadrosaurs of the Late Cretaceous might have been eating flowering plants, but their tooth wear patterns, and especially close study of their coprolites — that's fossil poops — shows they were conifer specialists, designed to crush and digest the oily, tough needles and cones.»

In contrast, ceratopsids had skulls that suggest they were adapted to feeding on mid-sized shrubs, while the taller hadrosaurs were less picky and would have fed on anything within reach.

Of these, six species would have coexisted at any one time, including two types of ankylosaurs (tank - like armoured dinosaurs), two types of hadrosaurs (duck - billed dinosaurs), and two types of ceratopsids (horn - faced dinosaurs).

Not unexpectedly, differences were found between the three major groups (ankylosaurs, hadrosaurs and ceratopsids).

But there was a problem with this finding: fossils show no evidence that hadrosaurs could hop.

Rothschild has previously helped diagnose gout in a Tyrannosaurus rex, facial tumors in dwarf dinosaurs, and cancer in hadrosaurs; he acknowledges that if you look just at the literature, hadrosaurs did seem to be particularly susceptible to disease.

Sellers and his team used a laser scanner to create a 3D computer model of the skeleton of an Edmontosaurus, a type of hadrosaur or «duck - billed» dinosaur, and added virtual muscles to make it move.

For the hadrosaurs, a four - legged gallop would also have put too much stress on their bones, so it is most likely they moved at slower speeds on four legs and reared up to run on two.

Mary Schweitzer and her colleagues first remove minerals from fossils such as a hadrosaur femur, leaving organic material behind.

Collectively, the sequences showed the purported hadrosaur collagen was more closely related to T. rex and birds than to modern reptiles.

Hadrosaurs are usually identified by bony crests that extended from the skull, although Edmontosaurus doesn't have such a hard crest (paleontologists have discovered that it had a fleshy crest).

Rhinorex, which translates roughly into «King Nose,» was a plant - eater and a close relative of other Cretaceous hadrosaurs like Parasaurolophus and Edmontosaurus.

Rhinorex also helps us further fill in the hadrosaur family tree.»

Call it the Jimmy Durante of dinosaurs — a newly discovered hadrosaur with a truly distinctive nasal profile.

Rhinorex is the only complete hadrosaur fossil from the Neslen site, and it helps fill in some gaps about habitat segregation during the Late Cretaceous.

The dinosaur — a hadrosaur, or duck - billed plant - eater — apparently died in a soggy spot.

On the basis of the new information, researchers now estimate that this hadrosaur could have run roughly 27 miles per hour.

A few years ago, Fassett's colleagues were digging in a fossil - rich area of New Mexico when they uncovered the four - foot - long fossilized thighbone of a duck - billed, plant - eating hadrosaur in a sandstone cliff.

«The sites in Berguedà, Pallars Jussà, Alt Urgell and La Noguera, in Catalonia, have provided proof of five different groups of dinosaurs: titanosaurs, ankylosaurids, theropods, hadrosaurs and rhabdodontids,» explains Àngel Galobart, head of the Mesozoic research group at the ICP and director of the Museum of Conca Dellà in Isona.

However, the scales are large, too large for the typical size of carnivorous dinosaurs and hadrosaurs roaming this area 66 million years ago.

The pelvis and pectoral bones of the hadrosaur suggest it was an Edmontosaurus, which may have been prey for tyrannosaurs.

The samples in this case suggest that the hadrosaur's backside is some 25 percent larger than once thought, potentially enabling it to run at 45 kilometers per hour (about 28 miles per hour), a bit faster than the top human sprinters.

Mineralized skin samples suggest that the plant - eating hadrosaur may have been larger and faster than thought

Now another team, analyzing what may be the most intact dinosaur mummy discovered yet, report fresh details about the skin of a hadrosaur nicknamed Dakota, which might have been bigger and moved more quickly than previously thought.

(Previous analyses of fossilized bones also hinted at a growth spurt among hadrosaur youngsters, the researchers note.)

Although the precise color of the skin remains unknown, the data confirm previous evidence that the hadrosaur's skin might have had stripes.

The presence of juveniles in the herd also strongly hints that these creatures spent their entire lives in the Arctic, the team says; hadrosaurs of that size wouldn't have had the size or stamina to migrate to and from warmer climates during wintertime, as some scientists have proposed.

Earlier this week scientists studying fossilized teeth from a hadrosaur revealed how the duck - billed dinosaur chewed plants for food.

Most of the tracks, made somewhere between 69 million and 72 million years ago, were left by hadrosaurs, commonly known as duck - billed dinosaurs (the crested creatures in this artist's representation).

A mere 3 % of the tracks represent juvenile hadrosaurs, a rarity that strongly suggests the young of this species experienced a rapid growth spurt and therefore spent only a short time at this vulnerable size, the researchers report online this week in Geology.

It was embedded throughout with bone fragments, most likely from a young triceratops or hadrosaur.

The creature, a type of duck - billed dinosaur or hadrosaur, was abundant in the region about 70 million years ago.

Based on the shape and structure of the fossilized tendon discovered by the team, Erickson and Druckenmiller determined that it is from a large ornithopod dinosaur, probably a hadrosaur.

Scientists claim proteinaceous blood vessels from a hadrosaur that roamed proto - Montana 80 million years ago somehow survived

The new discovery suggests that the hadrosaurs not only roamed in herds but also flourished in the ancient high - latitude, polar ecosystem.

He and his research team through funding by the National Science Foundation, have found two new dinosaurs in Antarctica including a «Jurassic Park - like» raptor or deinonychosaur in 2003 and a duck - billed dinosaur or hadrosaur in 1997, both finds added new families of dinosaurs to the list of Antarctic dinosaurs.

About that time, I was also reading submissions for a magazine I was editing called Hadrosaur Tales.