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TOPIC: Dinosaurs
Blobrana


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RE: Dinosaurs
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A fossil unearthed in China has given scientists a rare glimpse of what dinosaurs were like in the flesh.
The plant-eating Psittacosaurus had a thick layer of shark-like skin hidden under scales or feathers.
Palaeontologists believe this tough outer coating supported the dinosaur's organs and protected it from predators.
Tooth marks suggest the dinosaur was torn open by a scavenger, giving a unique insight into their biology, 100 million years after this one's death.

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Blobrana


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Brachylophosaurus
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A 77 million-year-old mummified duckbill dinosaur discovered in the badlands north of Malta during the summer of 2000, is heading to the Houston Museum of Natural Sciences, where it will be studied and displayed for more than a year.

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Blobrana


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Most leading theories on how dinosaurs died out focus on asteroid impacts or massive volcanism. But a new book blames a   much less thunderous force: insects.
The rise and evolution of these bugsthe biting disease-carriers,  in particularcoincided fatefully with the mighty reptiles  later days, write George Poinar Jr. of Oregon State University and his wife Roberta in the book, What Bugged the Dinosaurs? Insects, Disease and Death in the Cretaceous.

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Blobrana


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Turning the spotlight on two of the most important dinosaur discoveries in recent times is National Geographic Channels brand new series premiering on December 24. The Real Jurassic reveals new information that will fill in a virtual black hole in dinosaur evolution.
In Dino Autopsy airing on December 24, top palaeontologists in the U.S. uncover the rocky tomb of the 67-million-year-old dinosaur Dakota, one of the most complete dino mummies ever found. With the use of a giant CT scanner, scientists attempt to peer inside this preserved body and tail in one of the largest scans ever attempted.

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Blobrana


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An excavation in Thailand's Northeast has discovered fossils of various dinosaurs, among them those of allosaurus, the biggest-sized carnivorous dinosaur species that have been found in Thailand.
Dr. Pratuang Jintasakul, director of the Nakhon Ratcha-sima Rajabhat University Petrified Wood and Mineral Resources Research Institute and Museum, announced  on Monday, that the excavation at Ban Saphan Hin village in Muang district (provincial seat) of Nakhon Ratchasima Province uncovered allosaurus, iguanodon, duckbilled dinosaur and pterosaurs fossils in conglomerate layers dating back 100 million years.

"Allosaurus is the biggest carnivorous dinosaur species to have been found in Thailand" - Dr. Pratuang Jintasakul.

Allosaurus is a late-Jurassic carnivorous dinosaur. It is similar to, but somewhat smaller, than the tyrannosaurus. Yet, allosaurus used to stand as tall as 10 meters.

"From what we have found, some of its teeth are 10 centimetres long" - Dr. Pratuang Jintasakul.

Pratuang said his institute had found piles of dinosaur fossils and rocks in the suburbs of Khon Kaen province, neighbouring NakhonRatchasima, over the past seven years. In 2005, he invited Chinese dinosaur expert Professor Dong Zhiming to help classify the fossils.

"In all, there are more than 1,000 dinosaur fossils" - Dr. Pratuang Jintasakul.

Source Xinhua


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Blobrana


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Glacialisaurus hammeri
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Fossil remains found near New Zealand's Antarctic Scott Base have been identified as the largest creature to ever walk the Earth.
The four to six tonne, seven to eight metre long dinosaur has been dug out of rock and ice at the base of Mt Kirkpatrick near the Beardmore Glacier, 700kms south of Scott Base and in New Zealand's Ross Dependency,
Labelled "Glacialisaurus hammeri" it lived about 190 million years ago.
A statement out today from Chicago's Field Museum says the massive plant-eating primitive sauropodomorph was a new genus and species.

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Title: Anatomy of a basal sauropodomorph dinosaur from the Early Jurassic Hanson Formation of Antarctica
Authors:  Nathan D. Smith and Diego Pol

The anatomy of a basal sauropodomorph (Dinosauria: Saurischia) from the Early Jurassic Hanson Formation of Antarctica is described in detail. The material includes a distal left femur and an articulated right pes, including the astragalus, distal tarsals, and metatarsals I-IV. The material is referable to Sauropodomorpha and represents a non-eusauropod, sauropodomorph more derived than the most basal members of Sauropodomorpha (e.g., Saturnalia, Thecodontosaurus, Efraasia, and Plateosaurus) based on a combination of plesiomorphic and derived character states. Several autapomorphies present in both the femur and metatarsus suggest that this material represents a distinct sauropodomorph taxon, herein named Glacialisaurus hammeri gen. et sp. nov. Some of the derived characters present in the Antarctic taxon suggest affinities with Coloradisaurus and Lufengosaurus  (e.g., proximolateral flange on plantar surface of metatarsal II, well-developed facet on metatarsal II for articulation with medial distal tarsal, subtrapezoidal proximal surface of metatarsal III). Preliminary phylogenetic analyses suggest a close relationship between the new Antarctic taxon and Lufengosaurus from the Early Jurassic Lufeng Formation of China. However, the lack of robust support for the taxons phylogenetic position, and current debate in basal sauropodomorph phylogenetics limits phylogenetic and biogeographic inferences drawn from this analysis. The new taxon is important for establishing the Antarctic continent as part of the geographic distribution of sauropodomorph dinosaurs in the Early Jurassic, and recently recovered material from the Hanson Formation that may represent a true sauropod, lends support to the notion that the earliest sauropods coexisted with their basal sauropodomorph relatives for an extended period of time.

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Blobrana


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Xenoposeidon proneneukus
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Mike Taylor was rummaging among the shelves of the Natural History Museum in London when he came across it - a label stuck to a dusty fossil that struck the part-time dinosaur enthusiast as distinctly wrong.
For 113 years it had barely attracted a second look, stored deep below the museum after being dismissed as just another fossil from a common North American dinosaur. In fact, what the computer programmer from Gloucestershire had found was evidence of a new species that lived 140m years ago.
The dinosaur, now named Xenoposeidon proneneukus, belonged to a previously unknown family of sauropods, according to the journal of the British Palaeontological Association, which reports the discovery for the first time today.

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Blobrana


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Lyson, 24, first discovered the bony tip of an ancient tail in 1999 while hiking on his uncles ranch in the North Dakota Badlands.
He noted the location of the fossil, but didnt return to the site for five years.

You dont know how good your find is until you excavate it.

What he thought was merely a few spinal bones turned out to be a complete hadrosaur commonly called a duck-billed dinosaur.
Not only was the skeleton complete, but the dinosaurs soft tissues like skin, tendons and ligaments were fossilised.

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Blobrana


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Fossil hunters have uncovered the remains of a dinosaur that has much of its soft tissue still intact.
Skin, muscle, tendons and other tissue that rarely survive fossilisation have all been preserved in the specimen unearthed in North Dakota, US.
The 67 million-year-old dinosaur is one of the duck-billed hadrosaur group.

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Blobrana


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One of the most complete dinosaur mummies ever found is revealing secrets locked away for millions of years, bringing researchers as close as they will ever get to touching a live dinosaur.
The fossilised duckbilled hadrosaur is so well preserved that scientists have been able to calculate its muscle mass and learn that it was more muscular than thought, probably giving it the ability to outrun predators such as T. rex.

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This undated handout photo provided by the National Geographic Society shows the scale of the fossilised skin of a duckbilled hadrosaur found in 1999 in North Dakota. Soft parts of dead animals normally decompose rapidly after death. Soft parts of dead animals normally decompose rapidly after death. Because of chemical conditions where this animal died, fossilisation took place faster than the decomposition, leaving mineralised portions of the tissue. Because of chemical conditions where this animal died, fossilisation took place faster than the decomposition, leaving mineralised portions of the tissue.

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