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TOPIC: Dinosaurs


L

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Swimming Dinosaurs
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It's a warm, muggy day about 125 million years ago (early Cretaceous period) when dinosaurs roamed the land and flew the skies of what is now northern Spain.
The air is full of squawks and songs of dinosaurs. Birds add their calls to the cacophony, as they flit among tall cyads, which crowd the shore of a vast lake.


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L

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RE: Dinosaurs
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The redevelopment of a played-out clay pit in Prince George's County will include an unexpected bonus for palaeontologists and school kids: a dinosaur park.
The developer of an industrial park on the site has donated 7 1/2 acres of the 700-acre Muirkirk property for a public dinosaur preserve, complete with ancient tree species and an exposed layer of clay that has yielded up bits of dinosaurs for more than a century.

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L

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LIDAR
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With the eye of an electrical engineer, Nels Peterson is hoping to bring a new, high-tech tool to the field excavation of dinosaurs, a labour of picks, shovels and brushes that has changed little over the past 100 years.

"Only a small group of people ever get to excavate a particular dinosaur. An excavation is like being in the audience of a Shakespeare play. For those who weren't there, they have to read the play or, worse, read a review. A lot of information is lost. I'm trying to bridge that gap" - Nels Peterson, a 2005 electrical engineering graduate from Montana State University.

Peterson has been working with palaeontologist Jack Horner at the Museum of the Rockies since he was an undergraduate. During this summer's field season, Peterson will experiment with a method he developed to use LIDAR (light detection and ranging) for creating 3-dimensional computer models of dinosaur bones as they are excavated. Researchers could then examine the computer model from any angle and have a record of the sedimentary layers in which the fossil was encased.

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L

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Zhejiangosaurus Lishuiensis
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Japanese and Chinese scientists have jointly announced the discovery of a new dinosaur species that used to roam the southwestern region of present-day Zhejiang province in east China 100 million years ago.
After studying dinosaur fossils found in 2000 at a village near the city of Lishui during the construction of a freeway, scientists named the new species 'Zhejiangosaurus Lishuiensis', according to an article in Acta Geologica Sinica, an English-language academic quarterly magazine published by the Geological Society of China.

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L

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Dinosaur mass grave
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An amateur palaeontologist in Switzerland may have unearthed Europe's largest dinosaur mass grave after he dug up the remains of two Plateosaurus.
The dinosaurs' bones came to light during house-building in the village of Frick, near the German border.

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L

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Dinosaur Egg
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A 72-million-year-old dinosaur egg has been handed back to Argentina after being seized in Australia during a blitz on fossil smuggling.
The eight kg egg, from the plant eating Titanosaurus, was seized in Melbourne in January 2005 en route to the United States.
A further 112kg of fossils were found two months later from the same dealer.

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L

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RE: Dinosaurs
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The word dinosaur may often be used to describe someone stuck in the past, but many of the sites where their fossils have been found in Thailand have been turned into learning centres where knowledge of the prehistoric can be used to give people a greater perspective on their lives. Thipawan Supamitkitja said she has taken her nine-year-old son, Jamie, who has a great interest in rocks and the earth, to many dinosaur museums.

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L

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Michigan palaeontologist, children's author and educator Joseph "PaleoJoe" Kchodl has a new tale to tell during his summer tour of Michigan libraries: He recently unearthed a 65 million-year-old triceratops in the badlands of Montana.
Local residents can hear about his latest dig and developing book series during a free program 2 p.m. Monday at Walker Memorial Library in North Muskegon. His library programs are complete with music, real fossils such as a T-Rex tooth and a velociraptor skull, activity pages for the kids, and more.

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L

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It isn't every day that your friends make the cover of Science magazine. Belated congrats to my friend Randy Irmis and his colleagues Sterling Nesbitt, Kevin Padian and others for their neat work on the dinosauromorph assemblage of Hayden Quarry, New Mexico (Irmis et al. 2007). Exciting stuff. Why? Well...
At Hayden Quarry, Norian-aged sediments of the Chinle Formation preserve temnospondyls, drepanosaurids, aetosaurs and diverse other crurotarsans, and dinosauromorphs. The big deal is this: for an assemblage dated to so late in the Triassic, Irmis et al. (2007) have been able to demonstrate the presence of both dinosaurs and non-dinosaurian dinosauromorphs.


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L

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Fossils discovered in the oft-painted arroyos of northern New Mexico show for the first time that dinosaurs and their non-dinosaur ancestors lived side by side for tens of millions of years, disproving the notion that dinosaurs rapidly replaced their supposedly outmoded predecessors.
The fossils were excavated from the Hayden Quarry at Ghost Ranch, an area made famous through the paintings of Georgia O'Keefe, by a team of palaeontologists from the University of California, Berkeley, the American Museum of Natural History and The Field Museum. The finds, including fossil bones of a new dinosaur predecessor the researchers have named Dromomeron romeri, are described in the July 20 issue of Science.


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