HOME >> BIOLOGY >> NEWS
Killer dinosaurs turned vegetarian

Scientists have discovered a mass graveyard of bird-like feathered dinosaurs in Utah. The previously unknown species provides clues about how vicious meat-eaters related to Velociraptor ultimately evolved into plant-munching vegetarians.

Discovery of the bizarre new species, Falcarius utahensis, is reported in the Thursday May 5 issue of the journal Nature by paleontologists from the Utah Geological Survey and the Utah Museum of Natural History at the University of Utah.

Scientists do not yet know if the creature ate meat, plants or both, says James Kirkland, Utah state paleontologist at the Utah Geological Survey and principal scientist for the new study. But "Falcarius shows the beginning of features we associate with plant-eating dinosaurs, including a reduction in size of meat-cutting teeth to leaf-shredding teeth, the expansion of the gut to a size needed to ferment plants, and the early stages of changing the legs so they could carry a bulky body instead of running fast after prey."

The adult dinosaur walked on two legs and was about 13 feet long (4 meters) and stood 4.5 feet tall (1.4 meters). It had sharp, curved, 4-inch-long (10 centimeter) claws. Falcarius, which dates to the Early Cretaceous Period about 125 million years ago, belongs to a group of dinosaurs known as therizinosaurs. The group includes feathered dinosaurs such as Beipiaosaurus that were found in southeast China in recent years. Falcarius and Beipiaosaurus are about the same age and appear to represent an intermediate stage between deadly carnivores and later, plant-eating therizinosaurs. Falcarius is anatomically more primitive than the Chinese therizinosaurs.

The therizinosaurs are maniraptorans. Birds evolved from maniraptorans, a group that includes sharp-clawed meat-eaters such as Utahraptor and Velociraptor, the dinosaur popularized by chasing children through the kitchen in the hit film "Jurassic Park."

Falcarius "is the most p
'"/>


6-May-2005


Page: 1 2 3 4 5 6

Related biology news :

1. Killer B cells provide new link in the evolution of immunity
2. Killer B cells demonstrate evolutionary link between fish and mammal immune systems
3. Killer microbe may be a lifesaver after all
4. Rise of dinosaurs in Late Triassic more gradual than once thought
5. Despite their heft, many dinosaurs had surprisingly tiny genomes
6. Large dinosaurs were extremely hot in their day, UF study finds
7. Sensational find: The mini-dinosaurs from the Harz Mountains
8. Oceans may soon be more corrosive than when the dinosaurs died
9. Unexpected finding: Some dinosaurs grew slower in hard times
10. Latest study: Scientists say no evidence exists that therapod dinosaurs evolved into birds
11. Did feathered dinosaurs exist?

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/13/2020)... ... 11, 2020 , ... Bode Technology (Bode), a ... genealogy team. Bode’s Forensic Genealogy Service (FGS) continues to deliver investigative ... methods. The team has added experienced genealogists, each having over a decade of ...
(Date:6/5/2020)... , ... June 04, 2020 , ... “Although we are ... and well-being of our attendees, staff, and the public. We remain committed to ... safe ways to collaborate virtually,” said Julie Sutcliffe, President of WMIS. ...
(Date:5/28/2020)... (PRWEB) , ... May 27, 2020 , ... CrucialTrak, a ... partner with New Jersey-based Critical Environments Group (CEG) to market and sell its complete ... of data center and IT environment infrastructure optimization solutions . , Brett ...
Breaking Biology News(10 mins):
(Date:6/23/2020)... (PRWEB) , ... June 22, 2020 , ... ... lead glutamine antagonist, DRP-104, will be presented June 22-24 during the American Association ... of DRP-104; and, the other profiles the potent, consistent single agent activity in ...
(Date:6/19/2020)... PETERSBURG, Russia (PRWEB) , ... June 18, 2020 , ... ... in 2018. Its goal is to join forces to radically prolong life and find ... significantly postpone the aging period. This project was supported by various scientists from all ...
(Date:6/11/2020)... ... June 09, 2020 , ... ... of a Small Business Innovation Research (SBIR) program funded by the National Institute ... Toxin Detection in the Field”. The project’s goal was to engineer and develop ...
(Date:6/11/2020)... ... ... Reducing carbon emissions has been and will continue to be a major topic ... to reduce CO2 is something we can’t avoid. , To protect the environment, ... today are created from recycled cooking oil or crops. Unfortunately, these sources are not ...
Breaking Biology Technology:
Cached News: