Daily Archives: June 24, 2010

WORLD'S LARGEST DINOSAUR GRAVEYARD FOUND

discovery.com

The world’s largest dinosaur graveyard has been discovered in Alberta, Canada, according to David Eberth of the Royal Tyrrell Museum and other scientists working on the project.

The Vancouver Sun reports that the massive dinosaur bonebed is 1.43-square miles in size. Eberth says it contains thousands of bones belonging to the dinosaur Centrosaurus, which once lived near what is now the Saskatchewan border.

(Centrosaurus; Credit: Nobu Tamura)

Centrosaurus was a plant-eating, cow-sized dinosaur from the Late Cretaceous, around 75 million years ago. It cut quite a figure back then, with its top-of-the-head frills and rhino-like nose horn. There is some evidence that it engaged in horn to horn combat among its own species, probably males fighting over mates.

The impressive jaw muscles of Centrosaurus allowed it to sheer through extremely tough foliage with ease

Although the Alberta dinosaur graveyard is noteworthy for its size, Eberth told The Vancouver Sunthat it “is really ugly looking. The bonebed is actually exposed, it’s very patchy and exposed in outcrops along the beautiful landscapes along the South Saskatchewan River.”

A journal paper outlining details about it is expected later this month.

Alberta has yielded many well-preserved dinosaur remains in the past, but paleontologists have never quite been sure why. It’s hoped that this latest find may help to clarify what geological conditions, or series of events, help to produce such pristine fossils.

When Centrosaurus was alive, Alberta was a balmy tropical area along a coast. Dinosaurs are often found in such places. Can you blame them? Good weather, nice scenery, plentiful water and good eats were the primary draws.

There was, however, trouble in paradise, since every so often horrible tropical storms wiped out large numbers of dinosaurs, other animals, and plants. After the deaths, there is new evidence that mammals would come to check out the carnage and gnaw on the bones.

Astronomers spot 'superstorm' on planet in another solar system

dailymail.co.uk

An artist's impression of the 'hot Jupiter' planet HD209458b where astronomers have detected a superstorm

An artist’s impression of the ‘hot Jupiter’ planet HD209458b where astronomers have detected a superstorm

A powerful ‘superstorm’ on a planet in another solar system has been spotted by astronomers.

Winds blowing at more than 6,200mph were detected on the distant world, which orbits a Sun-like star 150 light years away.

The ‘exoplanet’ HD209458b has about 60% the mass of Jupiter and is located near the constellation of Pegasus.

Circling its parent star at just a 20th of the distance between the Earth and the Sun, it is heated to a temperature of around 1,000C.

But since the planet always has the same side facing the star, one half is very hot while the other is much cooler.

‘On Earth, big temperature differences inevitably lead to fierce winds, and as our new measurements reveal, the situation is no different on HD209458b,’ said Dr Simon Albrecht, one of the scientists from the Massachusetts Institute of Technology (MIT) in Boston, US.

Every 3.5 days the planet moves in front of its star, blocking out a small portion of starlight over a period of three hours.

The ‘transiting’ events allowed astronomers on Earth to analyse light patterns providing information about the planet’s atmosphere.

An instrument called the CRIRES spectrograph at the European Southern Observatory’s Very Large Telescope array in Chile, was used to make the observations.

It not only found evidence of poisonous carbon monoxide gas in the planet’s atmosphere, but showed how fast it was moving.

The scientists were also able to determine the mass of the planet by measuring the speed of its orbit.

HD209458b was as carbon-rich as Jupiter and Saturn in our own solar system, said the astronomers.

Lead researcher Dr Ignas Snellen, from Leiden Observatory in the Netherlands, said: ‘In the future, astronomers may be able to use this type of observation to study the atmospheres of Earth-like planets, to determine whether life also exists elsewhere in the universe.’

The research is reported in the journal Nature.

UFO Fireball Sighting OKLAHOMA JUNE 2010

Oklahoma

Mysterious Fireball reported near Shawnee, Oklahoma

SHAWNEE, Oklahoma — Authorities called off a search for the site of a possible plane crash in Pottawatomie County.

County dispatchers received a 911 call around 9:45 p.m. Monday night. The caller reported seeing a “box in the sky on fire with white lights flashing,” said Melvin Potter with Pottawatomie County emergency management.

The call about a plane going down came from Lois Cornwall a resident who lives on Johnson Road near Shawnee.

“The flames, it was totally engulfed in flames. And I thought ‘Oh my god, that’s an airplane, and it’s on fire,’” Cornwall said.

Deputies searched a 36 square-mile area overnight until 3 a.m. and found nothing. Members of the Civil Air Patrol continued the search Tuesday morning, but also found nothing.

Potter said there have been no missing persons reports, and a check of local airports found no flight plans for the area had been filed.

Cornwall said she is still waiting for the plane to be found.

Flint found during High School dig is evidence that humans roamed south Essex 600,000 years ago

archaeologydaily.com

Part of a flint, created by a human hand and thought to date back 600,000 years, was dug up underneath sports pitches at Westcliff High School for Girls.
Experts believe it was used by a human species called Boxgrove Man, and is possibly the second-oldest find of its kind in the country.

It is almost twice as old the previous oldest human settlement remains in the county.

Southend Central Museum’s archaeology expert Ken Crowe said: “The flint is very small, only about an inch or so long.

But it’s the earliest evidence we have of occupation in Essex.

“So it’s very exciting for the museum and the town that we have evidence early humans were living here in that distant period of time.

“The discovery means early humans were living here before the River Thames took on its present form.

“It was a big river, but flowed in a different direction, a more northerly route. Glaciation pushed the river southwards to its present location.”

The flint, which is being kept at Southampton University, was actually discovered in 2005, but it has taken years for the date to be verified. The flint was dated by looking at the gravel it was buried in which are believed to have been deposited about 600,000 years ago.

It was discovered during investigations for the Medway Valley Palaeolithic Project, which was led by Francis Wenban-Smith of Southampton University’s archeological department.

The project was looking at prehistoric settlement along the Medway river, which then flowed through Essex, as well as Kent, and the Thames was just one of its tributaries. At the time of the discovery, the team was investigating ancient gravels below Westcliff High.

The humans living in Britain at that time were not modern humans, but a species called Homo heidelbergensis, or Boxgrove Man, whose remains have been found in Sussex.

There are no clues from the find into his lifestyle, but it is thought that Boxgrove Man wandered around in groups hunting and scavenging to survive.

A similar find of flint tools in Pakefield, Suffolk, is the oldest evidence of human activity in Britain at about 700,000 years old.

Claire Fox, Southend Museum spokeswoman, said: “I think it challenges people’s perception of the area. It pushes our timeline back a large chunk. We will be delighted when we get delivery of the flint and are able to put it on display “We will give it an appropriate position in the new display in the central museum.”

Ms Fox said she was not sure when the museum could get its hands on the flint, but estimated it could be about a year away.