Page last updated at 23:35 GMT, Wednesday, 21 October 2009 00:35 UK

Tiny dinosaur species identified

Fruitadens haagarorum
The dinosaur was approximately 70cm from nose to tail

A new species of dinosaur has been identified 30 years after its fossilised remains were discovered.

Fruitadens haagarorum, researchers say, is one of the smallest dinosaurs known to science.

In the Royal Society journal Proceedings B, the researchers say that the dinosaur weighed less that 1kg.

The fossils have been housed at the Natural History Museum of Los Angeles County since being discovered in Colorado in 1979.

According to the researchers, the tiny dinosaur was agile and a fast runner. It lived in the Upper Jurassic period, about 150 million years ago.

It was a member of a group of dinosaurs called the ornithischians, which were largely plant-eating creatures that included the far more imposing Triceratops and Stegosaurus.

It would have darted between the legs of some of the largest known long-necked sauropods, such as Brachiosaurus.

Fruitadens haagarorum
A study of its tiny jawbone revealed that the animal was likely an omnivore

The study that identified the diminutive creature was led by Richard Butler from the Bavarian State Collection for Palaeontology in Munich, Germany.

He told BBC News that examination of the dinosaur's teeth had revealed Fruitadens was probably an omnivore - eating smaller animals as well as vegetation.

"This is unusual for that group - most of them were strict herbivores," he said. "But if you're small, it's hard to feed on just vegetation, as it's difficult to digest."

Bigger animals with much larger guts were better able to survive on a plant-only diet.

The genus nameFruitadens refers to the area of Fruita in Colorado, where the fossils were first discovered.

"Fruitadens comes from a series of rocks, the Morrison Formation, which palaeontologists have studied intensively for 130 years, and from which dozens of dinosaur species are already known," said Dr Butler.

"Yet it is still possible to discover completely unique and remarkable species. If dinosaur ecosystems were that diverse, who knows what astonishing beasts are waiting for us to discover?"

Print Sponsor

Australia discovers new dinosaur
27 Aug 09 |  Asia-Pacific
Fossil hints at fuzzy dinosaurs
18 Mar 09 |  Science & Environment
New feathered dinosaur discovered
22 Oct 08 |  Science & Environment
Rock records dino 'dance floor'
20 Oct 08 |  Science & Environment

The BBC is not responsible for the content of external internet sites

Has China's housing bubble burst?
How the world's oldest clove tree defied an empire
Why Royal Ballet principal Sergei Polunin quit


Sign in

BBC navigation

Copyright © 2019 BBC. The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.

Americas Africa Europe Middle East South Asia Asia Pacific