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Newly
found dinosaur is long-nosed cousin of Tyrannosaurus rex
Date:
May 7, 2014
Source:
University of Edinburgh
Summary:
Scientists have discovered a new species of
long-snouted tyrannosaur, nicknamed Pinocchio rex, which stalked the Earth more
than 66 million years ago. Researchers say the animal, which belonged to the
same dinosaur family as Tyrannosaurus rex, was a fearsome carnivore that lived
in Asia during the late Cretaceous period. The newly found ancient predator
looked very different from most other tyrannosaurs.
........................
Scientists have discovered a new species of long-snouted
tyrannosaur, nicknamed Pinocchio rex, which stalked Earth more than 66 million
years ago.
Researchers
say the animal, which belonged to the same dinosaur family as Tyrannosaurus
rex, was a fearsome carnivore that lived in Asia during the late Cretaceous
period.
The newly
found ancient predator looked very different from most other tyrannosaurs. It
had an elongated skull and long, narrow teeth compared with the deeper, more
powerful jaws and thick teeth of a conventional T. rex.
Palaeontologists
were uncertain of the existence of long-snouted tyrannosaurs until the remains
of the dinosaur -- named Qianzhousaurus sinensis -- were unearthed in
southern China.
Until now,
only two fossilised tyrannosaurs with elongated heads had been found, both of
which were juveniles. It was unclear whether these were a new class of dinosaur
or if they were at an early growth stage, and might have gone on to develop
deeper, more robust skulls.
The new
specimen, described by scientists from the Chinese Academy of Geological
Sciences and the University of Edinburgh, is of an animal nearing adulthood. It
was found largely intact and remarkably well preserved, thereby confirming the
existence of tyrannosaur species with long snouts.
Experts say Qianzhousaurus
sinensis lived alongside deep-snouted tyrannosaurs but would not have been
in direct competition with them, as they were larger and probably hunted
different prey.
Following
the find, researchers have created a new branch of the tyrannosaur family for
specimens with very long snouts, and they expect more dinosaurs to be added to
the group as excavations in Asia continue to identify new species.
Qianzhousaurus
sinensis lived until
around 66 million years ago when all of the dinosaurs became extinct, likely as
the result of a deadly asteroid impact.
Findings
from the study, funded by the Natural Science Foundation of China and the
National Science Foundation, are published in the journal Nature
Communications.
Dr Steve
Brusatte, of the University of Edinburgh's School of GeoSciences, and one of
the authors of the study, said: "This is a different breed of tyrannosaur.
It has the familiar toothy grin of T. rex, but its snout was much longer
and it had a row of horns on its nose. It might have looked a little comical,
but it would have been as deadly as any other tyrannosaur, and maybe even a
little faster and stealthier."
Professor
Junchang Lü, of the Institute of Geology, Chinese Academy of Geological
Sciences, said: "The new discovery is very important. Along with Alioramus
from Mongolia, it shows that the long-snouted tyrannosaurids were widely
distributed in Asia. Although we are only starting to learn about them, the
long-snouted tyrannosaurs were apparently one of the main groups of predatory
dinosaurs in Asia."
Story
Source:
The above
story is based on materials provided by University of Edinburgh. Note: Materials may be
edited for content and length.
Journal
Reference:
- Junchang Lü, Laiping Yi, Stephen L. Brusatte, Ling Yang, Hua Li & et al. A new clade of Asian Late Cretaceous long-snouted tyrannosaurids. Nature Communications, 2014 DOI: 10.1038/ncomms4788
Cite This
Page:
University of Edinburgh. "Newly
found dinosaur is long-nosed cousin of Tyrannosaurus rex." ScienceDaily.
ScienceDaily, 7 May 2014.
<www.sciencedaily.com/releases/2014/05/140507100421.htm>.
