South Korean researchers said Monday that they have discovered the world's largest fossilized tooth marks of a carnivorous dinosaur in the country's southeastern province.
The unusual tooth scores, found on the tailbone of the adult herbivorous dinosaur Pukyongosaurus from the early Cretaceous period of the Mesozoic Era, measured 17 centimeters long, 2 centimeters wide, and 1.5 centimeters deep, the longest and deepest scores ever discovered in the world, according to Paik In-sung, a professor at Pukyong National University, who led the research.
The tailbone fossil itself was found in 2008 in Hadong, South Gyeongsang Province, some 470 kilometers southeast of Seoul, Paik added.
The W-shaped marks showing the two teeth of the dinosaur form sharp grooves in the bone and were presumably etched there when the predator bit meat off the carcass, according to Paik.
Apart from the largest tooth marks, many tooth scores of different sizes and shapes were also detected on the tailbone, which offers insight into the feeding behavior of meat-eating dinosaurs that lived on the earth some 120 million years ago, Paik said.
"The discovery of both large and small tooth marks on a single bone of a plant-eating dinosaur serves as telltale evidence that the meat-eating dinosaurs in the past had eating habits of exploiting a single sauropod carcass, identical to that of modern carnivores," he added.
The study, funded by the country's Ministry of Education, Science and Technology and the National Research Foundation of Korea, was published on the online version of the journal Palaeogeography, Palaeoclimatology, Palaeoecology last week.
Palaeontologists say dinosaurs lived in South Korea from 120 million to 80 million years ago, throughout much of the Cretaceous period, the last stage of the Mesozoic era and the heyday for dinosaurs. Their fossils, relatively well-preserved and discovered in a richly diverse spectrum across the southern South Korean coasts, are currently registered on a tentative list of U.N. World Heritage sites, en route to gaining major recognition.
Source: Yonhap News Agency [July 18, 2011]
http://archaeologynewsnetwork.blogspot.com/2011/07/worlds-largest-dinosaur-tooth-marks.html?utm_source=feedburner&utm_medium=email&utm_campaign=Feed:+TheArchaeologyNewsNetwork+(The+Archaeology+News+Network)
Showing posts with label South Korea. Show all posts
Showing posts with label South Korea. Show all posts
Wednesday, August 3, 2011
Sunday, July 31, 2011
South Korean scientists create glowing dog: report
SEOUL (Reuters) - South Korean scientists said on Wednesday they have created a glowing dog using a cloning technique that could help find cures for human diseases such as Alzheimer's and Parkinson's, Yonhap news agency reported.
A research team from Seoul National University (SNU) said the genetically modified female beagle, named Tegon and born in 2009, has been found to glow fluorescent green under ultraviolet light if given a doxycycline antibiotic, the report said.
The researchers, who completed a two-year test, said the ability to glow can be turned on or off by adding a drug to the dog's food.
"The creation of Tegon opens new horizons since the gene injected to make the dog glow can be substituted with genes that trigger fatal human diseases," the news agency quoted lead researcher Lee Byeong-chun as saying.
He said the dog was created using the somatic cell nuclear transfer technology that the university team used to make the world's first cloned dog, Snuppy, in 2005.
The scientist said that because there are 268 illnesses that humans and dogs have in common, creating dogs that artificially show such symptoms could aid treatment methods for diseases that afflict humans.
The latest discovery published in 'Genesis', an international journal, took four years of research with roughly 3.2 billion won ($3 million) spent to make the dog and conduct the necessary verification tests, Yonhap said.
(Reporting by Jeremy Laurence; Editing by Daniel Magnowski)
http://mobile.reuters.com/article/idUSTRE76Q1MK20110727?irpc=932
A research team from Seoul National University (SNU) said the genetically modified female beagle, named Tegon and born in 2009, has been found to glow fluorescent green under ultraviolet light if given a doxycycline antibiotic, the report said.
The researchers, who completed a two-year test, said the ability to glow can be turned on or off by adding a drug to the dog's food.
"The creation of Tegon opens new horizons since the gene injected to make the dog glow can be substituted with genes that trigger fatal human diseases," the news agency quoted lead researcher Lee Byeong-chun as saying.
He said the dog was created using the somatic cell nuclear transfer technology that the university team used to make the world's first cloned dog, Snuppy, in 2005.
The scientist said that because there are 268 illnesses that humans and dogs have in common, creating dogs that artificially show such symptoms could aid treatment methods for diseases that afflict humans.
The latest discovery published in 'Genesis', an international journal, took four years of research with roughly 3.2 billion won ($3 million) spent to make the dog and conduct the necessary verification tests, Yonhap said.
(Reporting by Jeremy Laurence; Editing by Daniel Magnowski)
http://mobile.reuters.com/article/idUSTRE76Q1MK20110727?irpc=932
Monday, January 3, 2011
Lethal bird flu confirmed in S.Korea wild duck
SEOUL — One of five wild ducks found dead in South Korea this week was confirmed Saturday to have been infected with a lethal strain of the bird flu virus as the country battles its first outbreak in over two years.
Tests showed one of the five dead birds found in Sacheon City on December 26 had been stricken with the H5N1 virus, the agriculture ministry said in a statement.
The same strain -- which poses a risk to humans -- has also been detected in wild birds and their faeces at four other locations across the country since December 7, it said.
South Korea on Friday confirmed the outbreak of bird flu and more than 100,000 birds have been slaughtered as authorities seek to contain its spread.
Two poultry farms, one in the central city of Cheonan and the other in the southwestern city of Iksan, were confirmed to have been contaminated, the ministry said.
Health authorities placed a quarantine zone over a 10 kilometre (6.25 mile) radius, restricting movements of vehicles and people and carrying out emergency disinfection.
They have also stepped up inspections of wild birds and urged poultry businesses to take extra precautions such as erecting nets around their farms to keep wild birds out.
The avian influenza outbreak is likely to further strain the country's health system, which has already been struggling to contain swine flu and foot-and-mouth disease (FMD) cases across the country.
South Korea has been hit by bird flu three times, with the last outbreak in April 2008.
In 2008, South Korea had to cull more than eight million birds to curb the virus, resulting in damages estimated at 200 billion won (194 million dollars at the time).
Four people were confirmed to have been infected with the bird flu virus in late 2003 in South Korea but they showed few symptoms, health authorities said.
http://www.google.com/hostednews/afp/article/ALeqM5j6RZqSGB3laVpjiY3BD9kWTH4oHA?docId=CNG.2ed0801c7a83ed76b6d4fc3f23c9c7a5.831
Tests showed one of the five dead birds found in Sacheon City on December 26 had been stricken with the H5N1 virus, the agriculture ministry said in a statement.
The same strain -- which poses a risk to humans -- has also been detected in wild birds and their faeces at four other locations across the country since December 7, it said.
South Korea on Friday confirmed the outbreak of bird flu and more than 100,000 birds have been slaughtered as authorities seek to contain its spread.
Two poultry farms, one in the central city of Cheonan and the other in the southwestern city of Iksan, were confirmed to have been contaminated, the ministry said.
Health authorities placed a quarantine zone over a 10 kilometre (6.25 mile) radius, restricting movements of vehicles and people and carrying out emergency disinfection.
They have also stepped up inspections of wild birds and urged poultry businesses to take extra precautions such as erecting nets around their farms to keep wild birds out.
The avian influenza outbreak is likely to further strain the country's health system, which has already been struggling to contain swine flu and foot-and-mouth disease (FMD) cases across the country.
South Korea has been hit by bird flu three times, with the last outbreak in April 2008.
In 2008, South Korea had to cull more than eight million birds to curb the virus, resulting in damages estimated at 200 billion won (194 million dollars at the time).
Four people were confirmed to have been infected with the bird flu virus in late 2003 in South Korea but they showed few symptoms, health authorities said.
http://www.google.com/hostednews/afp/article/ALeqM5j6RZqSGB3laVpjiY3BD9kWTH4oHA?docId=CNG.2ed0801c7a83ed76b6d4fc3f23c9c7a5.831
Lethal bird flu confirmed in S.Korea wild duck
SEOUL — One of five wild ducks found dead in South Korea this week was confirmed Saturday to have been infected with a lethal strain of the bird flu virus as the country battles its first outbreak in over two years.
Tests showed one of the five dead birds found in Sacheon City on December 26 had been stricken with the H5N1 virus, the agriculture ministry said in a statement.
The same strain -- which poses a risk to humans -- has also been detected in wild birds and their faeces at four other locations across the country since December 7, it said.
South Korea on Friday confirmed the outbreak of bird flu and more than 100,000 birds have been slaughtered as authorities seek to contain its spread.
Two poultry farms, one in the central city of Cheonan and the other in the southwestern city of Iksan, were confirmed to have been contaminated, the ministry said.
Health authorities placed a quarantine zone over a 10 kilometre (6.25 mile) radius, restricting movements of vehicles and people and carrying out emergency disinfection.
They have also stepped up inspections of wild birds and urged poultry businesses to take extra precautions such as erecting nets around their farms to keep wild birds out.
The avian influenza outbreak is likely to further strain the country's health system, which has already been struggling to contain swine flu and foot-and-mouth disease (FMD) cases across the country.
South Korea has been hit by bird flu three times, with the last outbreak in April 2008.
In 2008, South Korea had to cull more than eight million birds to curb the virus, resulting in damages estimated at 200 billion won (194 million dollars at the time).
Four people were confirmed to have been infected with the bird flu virus in late 2003 in South Korea but they showed few symptoms, health authorities said.
http://www.google.com/hostednews/afp/article/ALeqM5j6RZqSGB3laVpjiY3BD9kWTH4oHA?docId=CNG.2ed0801c7a83ed76b6d4fc3f23c9c7a5.831
Tests showed one of the five dead birds found in Sacheon City on December 26 had been stricken with the H5N1 virus, the agriculture ministry said in a statement.
The same strain -- which poses a risk to humans -- has also been detected in wild birds and their faeces at four other locations across the country since December 7, it said.
South Korea on Friday confirmed the outbreak of bird flu and more than 100,000 birds have been slaughtered as authorities seek to contain its spread.
Two poultry farms, one in the central city of Cheonan and the other in the southwestern city of Iksan, were confirmed to have been contaminated, the ministry said.
Health authorities placed a quarantine zone over a 10 kilometre (6.25 mile) radius, restricting movements of vehicles and people and carrying out emergency disinfection.
They have also stepped up inspections of wild birds and urged poultry businesses to take extra precautions such as erecting nets around their farms to keep wild birds out.
The avian influenza outbreak is likely to further strain the country's health system, which has already been struggling to contain swine flu and foot-and-mouth disease (FMD) cases across the country.
South Korea has been hit by bird flu three times, with the last outbreak in April 2008.
In 2008, South Korea had to cull more than eight million birds to curb the virus, resulting in damages estimated at 200 billion won (194 million dollars at the time).
Four people were confirmed to have been infected with the bird flu virus in late 2003 in South Korea but they showed few symptoms, health authorities said.
http://www.google.com/hostednews/afp/article/ALeqM5j6RZqSGB3laVpjiY3BD9kWTH4oHA?docId=CNG.2ed0801c7a83ed76b6d4fc3f23c9c7a5.831
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