BBC Learning English
Words in the News
8

th

October 2010

Oldest dinosaur footprints found

Words in the News

© British Broadcasting Corporation 2010

Page 1 of 2

bbclearningenglish.com

Scientists have found dinosaur-like footprints in a 250-million-year-old rock, suggesting that

first dinosaur-like creatures emerged up to nine million years earlier than previously thought.

Our Science Correspondent, Pallab Ghosh reports:

These earliest dinosaur-like animals were about the size of domestic cats. They would have

weighed two or three pounds (1 to 1.5 kilos) and walked on four legs.

But what's really intrigued scientists is that they date from two million years after the worst

mass extinction event in the history of the planet.

It was a time when volcanic eruptions, sudden global warming and a stagnation of the

oceans wiped out more than 90% of all life on Earth.

Up until recently scientists thought that dinosaurs emerged 15 to 20 million years after this

event. But the new footprints suggest that they arose directly as a result of the devastation,

filling a gaping ecological void. Without the mass extinctions there would have been no

dinosaurs.

Pallab Ghosh, BBC News, London

Words in the News

© British Broadcasting Corporation 2010

Page 2 of 2

bbclearningenglish.com

Vocabulary and definitions

dinosaur

large reptile that lived around 200 million years ago

mass extinction

large number of deaths in a relatively short period of time

volcanic eruptions

explosions of ash, fire and liquid rock coming out of the

earth

global warming

increased average temperatures across the world

stagnation

inactivity

wiped out

completely destroyed

devastation

destruction

gaping

very wide

ecological

connected with plants, animals and the environment

void

area of empty space

More on this story:

http://www.bbc.co.uk/news/science-environment-11481232

Read and listen to the story and the vocabulary online:

http://www.bbc.co.uk/worldservice/learningenglish/language/wordsinthenews/2010/10/101008_witn_dinosaur_page.shtml