They're often regarded as serving no purpose, but a new study suggests that the arms of Tyrannosaurus Rex may have played a key role in its dominance over the animal kingdom.

A researcher claims that T-Rex's arms were used as vicious weapons, capable of inflicting metre-long gashes in its victims.

But not everyone is convinced by this theory, with some experts calling it an 'illogical' explanation.

Scroll down for video 

They're often regarded as serving no purpose, but a new study suggests that the arms of Tyrannosaurus Rex may have played a key role in its dominance over the animal kingdom (artist's impression)

They're often regarded as serving no purpose, but a new study suggests that the arms of Tyrannosaurus Rex may have played a key role in its dominance over the animal kingdom (artist's impression)

They're often regarded as serving no purpose, but a new study suggests that the arms of Tyrannosaurus Rex may have played a key role in its dominance over the animal kingdom (artist's impression)

THE THEORY

Dr Stanley has based his theory on T-Rex's strong arm bones, which at a metre-long, 'were not as tiny as often portrayed.'

The dinosaur also had an 'unsual quasi-ball-and-socket-joint', allowing it to move its arms in several directions – ideal for slashing, according to Dr Stanley.

During its evolution, T-Rex also lost one of its three claws, resulting in 50 per cent more pressure applied by the remaining two, providing a more powerful slash.

Dr Stanley added: 'In light of its formidable weaponry, why should T. rex not have engaged in this activity?'

Dr Steven Stanley, a palaeontologist at the University of Hawaii in Manoa argues that T-Rex's arms were more useful than thought.

Speaking at the Geological Society of America Conference in Seattle, Dr Stanley said: 'Its short, strong forelimbs and large claws would have permitted T. rex, whether mounted on a victim's back or grasping it with its jaws, to inflict four gashes a metre [three feet] or more long and several centimetres [more than an inch] deep within a few seconds.

'And it could have repeated this multiple times in rapid succession.'

Dr Stanley has based his theory on T-Rex's strong arm bones, which at a metre-long, 'were not as tiny as often portrayed.'

The dinosaur also had an 'unusual quasi-ball-and-socket-joint', allowing it to move its arms in several directions – ideal for slashing, according to Dr Stanley.

During its evolution, T-Rex also lost one of its three claws, resulting in 50 per cent more pressure applied by the remaining two, providing a more powerful slash.

Dr Stanley added: 'In light of its formidable weaponry, why should T. rex not have engaged in this activity?'

But not everyone is convinced by Dr Stanley's theory. Dr Jakob Vinther suggests that the arms were used for a 'minor subsidiary purpose,' such as to clasp a partner during sex (artist's impression)

But not everyone is convinced by Dr Stanley's theory. Dr Jakob Vinther suggests that the arms were used for a 'minor subsidiary purpose,' such as to clasp a partner during sex (artist's impression)

But not everyone is convinced by Dr Stanley's theory. Dr Jakob Vinther suggests that the arms were used for a 'minor subsidiary purpose,' such as to clasp a partner during sex (artist's impression)

But not everyone is convinced by Dr Stanley's theory.

Speaking to National Geographic, Dr Jakob Vinther, a paelobiologist at the University of Bristol, said: 'It seems illogical to me to use such small arms to slash with.'

Instead, Dr Vinther suggests that the arms were used for a 'minor subsidiary purpose,' such as to clasp a partner during sex. 

 

LEAVE A REPLY

Please enter your comment!
Please enter your name here