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2009-07-12 – Australia: World’s Oldest Dinosaur Burrow


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World’s Oldest Dinosaur Burrow Discovered In Australia

Posted on: Friday, 10 July 2009, 16:20 CDT | Related Video

Paleontologists have discovered the world’s oldest dinosaur burrows in Australia.  The 106-million-year-old burrows are the first to be found outside of North America, and were much closer to the South Pole when they were created.

In total, three separate burrows have been discovered, the largest of which was about 6ft. long.  Each burrow had a similar design and was just large enough to contain the body of a small dinosaur.

The discovery supports the theory that dinosaurs living in harsh, cold climates burrowed underground to survive.

The only other known dinosaur burrow was discovered in 2005 in Montana, and contained the bones of an adult and two young dinosaurs of a small new species called Oryctodromeus cubicularis. Two years after its discovery, scientists dated the burrow from 95 million years ago.   

The older burrows in Australia were found by one of the researchers who made the original Montana discovery.

“Like many discoveries in paleontology, it happened by a combination of serendipity and previous knowledge,” said Anthony Martin of Emory University in Atlanta.

“In May 2006, I hiked into the field site with a group of graduate students with the intention of looking for dinosaur tracks. We did indeed find a few dinosaur tracks that day, but while there I also noted a few intriguing structures,” he told BBC News.

Martin returned to the site, known as Knowledge Creek about 150 miles from Melbourne, to study the structures in July 2007 and again in May of 2009.

He was astonished at what he found.

“I was scanning the outcrop for trace fossils, and was very surprised to see the same type of structure I had seen in Cretaceous rocks of Montana the previous year,” said Martin.

That original structure was the burrow of O. cubicularis.

“So to walk up to the outcrop and see such a strikingly similar structure, in rocks only slightly older, but in another hemisphere, was rather eerie,” Martin said.

Within the rock, which is part of the Otway group of rocks that have produced a large diversity of vertebrate fossils, Martin discovered three separate burrows less than 10 feet apart, two of which formed a semi-helix twisting down into the rock.

The largest and best-preserved burrow turns twice before ending in a larger chamber. Dubbed tunnel A, it is more than 6 feet in length. Martin calculates that an animal weighing around 22 pounds would have created each burrow. Twisting burrows can help keep predators at bay and provide a steady temperature and humidity environment.

Alligators, aardwolves, coyotes, gopher tortoises and striped hyenas are among the modern animals that make such burrows.

Although Martin isn’t sure which species of dinosaur made the burrows, he noted how similar their designs are to the burrow created by O. cubicularis.

A number of small ornithopod dinosaurs, which stood upright on their hind legs and were about the size of a large iguana, were believed to have lived in the area during the same time in the Cretaceous period.

Martin has ruled out a number of other sources that could have created the burrows.

The fact dinosaurs created them makes sense, he said.

Australian researchers first proposed two decades ago that some dinosaurs might have created burrows to survive harsh climates they couldn’t escape from by migrating.

“It gives us yet another example of how dinosaurs evolved certain adaptive behaviors in accordance with their ecosystems,” Martin said.

“Polar dinosaurs in particular must have possessed special adaptations to deal with polar winters, and one of their behavioral options was burrowing. It provides an alternative explanation for how small dinosaurs might have overwintered in polar environments.”

Martin hopes that paleontologists will be on the look out for dinosaur burrows, and for dinosaurs that are physically adapted to burrowing into soil.

The findings were published in the journal Cretaceous Research.

Image 1: Drawing by James Hays, Fernbank Museum

Image 2: Following his Montana discovery of the first trace fossil of a dinosaur burrow, Emory University paleontologist Anthony Martin has found evidence of older, polar dinosaur burrows in Victoria, Australia.

On the Net:

Source: redOrbit Staff & Wire Reports

luglio 12, 2009 Posted by | - R. Dinosauri, 1 Cretaceo, An. Vertebrates, Mesozoic, Oceania, P - Impronte, P - Ritrovamenti fossili, Paleontology / Paleontologia | , , , | Lascia un commento

2009-06-19 – Mongolia: Nuovo Psittacosauro (new Psittacosaur)

Parrot-like dinosaur found in Mongolia

A new dinosaur resembling a giant parrot has been discovered in Mongolia.

 By Chris Irvine
Published: 7:00AM BST 17 Jun 2009
New dinosaur, Psittacosaurus gobiensis: Parrot-like dinosaur found in Mongolia
A new dinosaur, named Psittacosaurus gobiensis, meaning ‘parrot dinosaur’ has been discovered in Mongolia

The creature, Psittacosaurus gobiensis whose name means “parrot lizard”, is thought to have lived about 110 million years ago.

Psittacosaurs are noted for being the most species-rich dinosaur genus with at least nine different species, including the latest found in the Gobi Desert, a famous dinosaur graveyard.

Features of the dinosaur included a near perfect skull, strong jaw muscles and a powerful biting and crushing bill – showing that it evolved structures like those in today’s parrots.

The three feet long psittacosaurs may also have had a diet dominated by nuts and seeds, owing to the presence of many large stomach stones, according to the findings published in Proceedings of the Royal Society B: Biological Sciences.

Prof Paul Sereno, a Biologist from the University of Chicago, said analysis of its skull showed it chewed its food in a similar way to modern parrots.

“These and other features, along with the presence of numerous large stomach stones, suggest that psittacosaurs may have had a high-fibre, nut eating diet,” he said.

Its short snout just a third of the skull length was different to most dinosaurs, giving the skull its parrot-esque profile.

They ate nothing but plants and walked normally on two legs but could reach the ground with their three-fingered hands.

They were good runners and were extremely successful in Asia about 100 million years ago, during the Cretaceous Period.

“Psittacosaurs are all relatively small in body size, ranging from one to two metres in body length. Their geographic range is limited to central Asia, and their temporal range may be as narrow as 10-20 million years in the mid Cretaceous,” said Prof Sereno.

It is a member of the Ceratopsia group of herbivorous, beaked dinosaurs, which also include the more famous Triceratops.

source: telegraph.co.uk

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Other links: click here

giugno 19, 2009 Posted by | 1 Cretaceo, Articolo sc. di riferimento, Asia, Mesozoic, P - Preservazione eccezionale, P - Ritrovamenti fossili | , , , , | Lascia un commento

2009-06-12 – Italia: il 4 dinosauro !!! (fourth Italian dinosaur)

Con un po` di ritardo ecco il post su una notizia “eccezonale”.

Un osso ritrovato in sedimenti di origine marina nel Cenomaniano della Sicilia e stato identificato come appartenente a un dinosauro (il quarto ritovato in Italia).

Per info piu` dettagliate: Blog – Teropoda

Riferimento bibliografico:

Garilli, V, et al. “First dinosaur bone from Sicily identified by histology and its palaeobiogeographical implications.” Neues Jahrbuch für Geologie und Paläontologie 252.2 (2009):207-216.

giugno 12, 2009 Posted by | - Italia, - R. Dinosauri, An. Vertebrates, Articolo sc. di riferimento, Bl - Top posts, Blogs, Europa, Lang. - Italiano, P - Ritrovamenti fossili, Paleontology / Paleontologia, Theropoda | , , , , , | Lascia un commento

2009-05-22 – Peru: Dinosaur show

Dinosaur fossils may be exhibited in northern Peru
 

  • Paleontological species to be exhibited in Trujillo.
  • Trujillo, May 20 (ANDINA).- The remains of four dinosaurs recently found in the northern Peruvian region of La Libertad may be exhibited in the First Paleontological Museum to be built in Trujillo, said the project’s promoter Klaus Honninger Mitrani, who noted that they are already coordinating with Peru’s National Institute of Culture (INC).The fossils include a glyptodont (similar to the armadillo), a megaterio (similar to the sloth bear) and a third unidentified species (with horse shape), located in San Pedro de Lloc, province of Pacasmayo.

    He said they have also found a mastodonthat in Cascas, Gran Chimu province; that is why local authorities have started the paperwork with INC in order to preserve it.

    “I believe in the next 12 months the first paleontological museum of Peru, which will be built in Trujillo, will exhibit these 4 large dinosaurs,” he told Andina.

    “The coastal area of La Libertad is very interesting because we can find a varied fauna which dates back to the ice age. That is why we found several fossilized species, but they can not be rescued without INC authorization,” he said.

    He pointed out that they signed an agreement with Universidad de Piura, which includes the donation of a paleontology laboratory to study all remains found in La Libertad and Piura.

    (END) OPC/VVS/DCR

  • source: http://www.andina.com.pe/Ingles/Noticia.aspx?id=DC4sL7YTaMU=

maggio 22, 2009 Posted by | Mostre & Fiere, Paleontology / Paleontologia, Places | , , , , | Lascia un commento

2009-05-02 – Estratte proteine da un dinosauro di 80 milioni di anni (Brachylophosaurus, Dinosaur, Proteins, soft tissue)

Proteins, soft tissue from 80-million-year-old dino support theory that molecules preserve over time

A North Carolina State University paleontologist has more evidence that soft tissues and original proteins can be preserved over time – even in fossilized remains – in the form of new protein sequence data from an 80 million-year-old hadrosaur, or duck-billed dinosaur.

Dr. Mary Schweitzer, associate professor of marine, earth and atmospheric sciences at NC State with a joint appointment at the N.C. Museum of Natural History, along with colleague Dr. John Asara from the Beth Israel Deaconess Medical Center (BIDMC) and Harvard Medical School, Dr. Chris Organ from Harvard University, and a team of researchers from Montana State University, the Dana Farber Cancer Institute, and Matrix Science Ltd. analyzed the hadrosaur samples.

The researchers’ findings appear in the May 1 edition of Science.

Schweitzer and Asara had previously used multiple methods to analyze soft tissue recovered from a 68 million-year-old Tyrannosaurus Rex. Mass spectrometry conducted on extracts of T. rex bone supported their theory that the materials were original proteins from the dinosaur.

These papers were controversial, and the team wanted to demonstrate that molecular preservation of this sort in dinosaurs was not an isolated event. Based upon other studies, they made predictions of the type of environment most likely to favor this preservation, so Schweitzer and students, working with Jack Horner’s Museum of the Rockies field crews, went looking for a dinosaur preserved under a lot of sandstone. Using specially designed field methodology, with the aim of avoiding environmental exposure until the fossil was inside the lab, they set aside the femur from a Brachylophosaurus canadensis – a hadrosaurid dinosaur–buried deeply in sandstone in the Judith River formation.

“This particular sample was chosen for study because it met our criteria for burial conditions of rapid burial in deep sandstones,” Schweitzer says. “We know the moment the fossil is removed from chemical equilibrium, any organic remains immediately become susceptible to degradation. The more quickly we can get it from the ground to a test tube, the better chance we have of recovering original tissues and molecules.”

Preliminary results seemed to confirm their methodology, as Schweitzer found evidence of the same fibrous matrix, transparent, flexible vessels and preserved microstructures she had seen in the T. rex sample in the much older hadrosaur bone. Because of the rapidity of analyses after the bones were removed, the preservation of these dinosaurian components was even better. The samples were examined microscopically via both transmitted light and electron microscopes to confirm that they were consistent in appearance with collagen. They were also tested against antibodies that are known to react with collagen and other proteins.

Next, Schweitzer sent the samples to Asara’s lab to be analyzed by a new mass spectrometer, capable of producing sequences with much greater resolution than the one used previously. Mass spectrometry identifies molecules by measuring the mass of the protein fragments, or peptides, that result from breaking apart molecules with specific enzymes. The masses are measured with very high mass accuracy, and then compared with existing databases of proteins to achieve a best fit. In this way, Asara was able to identify eight collagen peptides from the hadrosaur, then confirm the identity of the sequences by comparing them both to synthesized fragments and to modern proteins analyzed under the same conditions. Once sequence data were validated, they were evaluated by Organ who determined that, like T.rex, this dinosaur’s protein family tree is closer to that of modern birds than that of alligators.

All results were independently verified by researchers at BIDMC, Montana State University, Harvard University, the Dana Farber Cancer Institute, and Matrix Science of London.

The data were consistent with that of the earlier T. rex analysis, confirming that molecular preservation in fossilized remains is not an isolated event. “We used improved methodology with better instrumentation, did more experiments and had the results verified by other independent labs,” Schweitzer says. “These data not only build upon what we got from the T. rex, they take the research even further.”

Schweitzer hopes that this finding will lead to more work by other scientists on these ancient molecules.

“I’m hoping in the future we can use this work as a jumping off point to look for other proteins that are more species-specific than collagen. It will give us much clearer insight into all sorts of evolutionary questions.”

Contact: Tracey Peake – tracey_peake@ncsu.edu – 919-515-6142 – North Carolina State University###

 source: eurekalert

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An abstract of the paper follows.

“Biomolecular Characterization and Protein Sequences of the Campanian Hadrosaur Brachylophosaurus canadensis
Authors: Mary H. Schweitzer, North Carolina State University and the N.C. Museum of Natural Sciences; John M. Asara, Beth Israel Deaconess Medical Center and Harvard Medical School, et al.
Published: May 1, 2009 in Science

Abstract: Molecular preservation in non-avian dinosaurs is controversial. We present multiple lines of evidence that endogenous proteinaceous material is preserved in bone fragments and soft tissues from an 80 million year old Campanian hadrosaur, Brachylophosaurus canadensis (MOR 2598). Microstructural and immunological data are consistent with preservation of multiple bone matrix and vessel proteins, and phylogenetic analyses of Brachylophosaur collagen sequenced by mass spectrometry robustly support the bird-dinosaur clade, consistent with an endogenous source for these collagen peptides. These data complement earlier results from Tyrannosaurus rex (MOR 1125) and confirm that molecular preservation in Cretaceous dinosaurs is not a unique event.

maggio 2, 2009 Posted by | - Ornitopodi, - R. Dinosauri, 1 Cretaceo, America Northern, An. Vertebrates, Articolo sc. di riferimento, Bl - Top posts, Mesozoic, P - Preservazione eccezionale, Paleontology / Paleontologia, X - Science | , , , , , | Lascia un commento

2009-04-27 – Nuova teoria riguardo l`estinzione dei Dinosauri e l`impatto dell`asteroide (Dinosaur extinction and Asteroid impact: a new theory)

New Blow for Dinosaur-Killing Asteroid Theory

Impact didn’t lead to mass extinction 65 million years ago, geologists find

chicxulub-crater
This artist’s rendering shows the Chicxulub crater at the time of the meteorite’s impact.
Credit and Larger Version

April 27, 2009

The enduringly popular theory that the Chicxulub crater holds the clue to the demise of the dinosaurs, along with some 65 percent of all species 65 million years ago, is challenged in a paper to be published in the Journal of the Geological Society on April 27, 2009.

The crater, discovered in 1978 in northern Yucutan and measuring about 180 kilometers (112 miles) in diameter, records a massive extra-terrestrial impact.

When spherules from the impact were found just below the Cretaceous-Tertiary (K-T) boundary, it was quickly identified as the “smoking gun” responsible for the mass extinction event that took place 65 million years ago.

It was this event which saw the demise of dinosaurs, along with countless other plant and animal species.

However, a number of scientists have since disagreed with this interpretation.

The newest research, led by Gerta Keller of Princeton University in New Jersey, and Thierry Adatte of the University of Lausanne, Switzerland, uses evidence from Mexico to suggest that the Chicxulub impact predates the K-T boundary by as much as 300,000 years.

“Keller and colleagues continue to amass detailed stratigraphic information supporting new thinking about the Chicxulub impact, and the mass extinction at the end of the Cretaceous,” says H. Richard Lane, program director in the National Science Foundation (NSF)’s Division of Earth Sciences, which funded the research. “The two may not be linked after all.”

From El Penon and other localities in Mexico, says Keller, “we know that between four and nine meters of sediments were deposited at about two to three centimeters per thousand years after the impact. The mass extinction level can be seen in the sediments above this interval.”

Advocates of the Chicxulub impact theory suggest that the impact crater and the mass extinction event only appear far apart in the sedimentary record because of earthquake or tsunami disturbance that resulted from the impact of the asteroid.

“The problem with the tsunami interpretation,” says Keller, “is that this sandstone complex was not deposited over hours or days by a tsunami. Deposition occurred over a very long time period.”

The study found that the sediments separating the two events were characteristic of normal sedimentation, with burrows formed by creatures colonizing the ocean floor, erosion and transportation of sediments, and no evidence of structural disturbance.

The scientists also found evidence that the Chicxulub impact didn’t have the dramatic impact on species diversity that has been suggested.

At one site at El Penon, the researchers found 52 species present in sediments below the impact spherule layer, and counted all 52 still present in layers above the spherules.

We found that not a single species went extinct as a result of the Chicxulub impact,” says Keller.

This conclusion should not come as too great a surprise, she says. None of the other great mass extinctions are associated with an impact, and no other large craters are known to have caused a significant extinction event.

Keller suggests that the massive volcanic eruptions at the Deccan Traps in India may be responsible for the extinction, releasing huge amounts of dust and gases that could have blocked out sunlight and brought about a significant greenhouse effect.

-NSF-

Media Contacts
Cheryl Dybas, NSF (703) 292-7734 cdybas@nsf.gov

source: http://www.nsf.gov/news/news_summ.jsp?cntn_id=114648&org=NSF&from=news

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Dinosaur Demise Came 300000 Years After Crater, Scientists Say

Bloomberg – ‎9 ore fa‎
By Chantal Britt April 27 (Bloomberg) — The demise of the dinosaurs probably occurred 300000 years after a giant meteor struck what is now Mexico,
New Blow For Dinosaur-killing Asteroid Theory Science Daily (press release)

aprile 27, 2009 Posted by | - R. Dinosauri, 1 Cretaceo, An. Vertebrates, Articolo sc. di riferimento, Mesozoic, P - Extinctions, Paleontology / Paleontologia | , , , , , , , , , , | Lascia un commento

2009-02-25 – Miragaia longicollum: nuovo dinosauro scoperto in Portogallo (New dinosaur, Portugal)

on other blogs: SVPOW – SV-POW! showdown: stegosaurs vs sauropods

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New dinosaur discovered in Portugal

A new dinosaur that walked the Earth 150 million years ago has been found in Portugal

Its partial skeleton includes the only known skull remains from any European stegosaur that had a row of bony plates along its back and a spiked tail probably used as a weapon.

The plant eating creature has been called, Miragaia longicollum, after the village it was uncovered in near Lourinha and because of its long neck.

Stegosaurs are normally known for their short forelimbs and short necks, and are generally considered to be low browsers.

But this new dinosaur has a higher neck vertebrae count than most of the sauropods renowned for their small heads on very long necks that were the largest and heaviest dinosaurs that ever existed.

Dr Octavio Mateus, of the New University of Lisbon, said: “Stegosaurs are traditionally reconstructed as feeding on low vegetation because of their small heads, short necks and short forelimbs.

“We describe a new stegosaurian dinosaur from the Upper Jurassic of Portugal that challenges this traditional view.

“Miragaia longicollum possessed at least 17 cervical vertebrae, more than possessed by most sauropod dinosaurs, famed for their long necks.

“This new discovery indicates a previously unsuspected level of ecological diversity among stegosaurs.”

Dr Mateus, whose findings are described in Proceedings of the Royal Society B, said several elements of the skull of Miragaia longicollum were found, “representing the first such material recovered from a European stegosaur.”

He added: “The most notable feature of M. longicollum is its long neck, with at least 17 cervical vertebrae.

“The specimen here described represents one of the most complete stegosaurs in Europe and the first that includes cranial material.”

source: telegraph.co.uk

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Miragaia longicollum

Miragaia longicollum

Stegosaurs have long been identified by the bony plates on their backs, the spikes on their tales, short forelimbs, and stubby little necks.
Now paleontologists have discovered a 150-million-year-old stegosaur (above) in Portugal with a neck that stretched over 5.9 feet (1.8 meters), a February 2009 study reported.
Photograph courtesy Octavio Mateus/Nova de Lisboa University; illustration courtesy Alam Lam/Nova de Lisboa University

source: NationalGeographic.com

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New dinosaur discovered in Portugal
Telegraph.co.uk – 15 ore fa
A new dinosaur that walked the Earth 150 million years ago has been found in Portugal. Its partial skeleton includes the only known skull remains from any European stegosaur that had a row of bony plates along its back and a spiked tail probably used
Long-Necked Stegosaur Defies Reputation Discovery Channel
New Stegosaur With Odd Long Neck Discovered National Geographic
Science News – Daily News & Analysis
e altri 16 articoli simili »

febbraio 25, 2009 Posted by | - R. Dinosauri, 2 Jurassic / Giurassico, An. Vertebrates, Bl - Top posts, Blogs, Europa, P - Ritrovamenti fossili, Paleontology / Paleontologia, SVPOW | , , , , , , | 3 commenti

2009-02-12 – Perù: Impronte di Dinosauri (Dinosaur footprints, Dinosaurier)

Dinosaur footprints, fossils found in central Peru

Lima, February 10, 2009
Hundreds of footprints and the fossilised remains of various prehistoric animals, probably dinosaurs that lived 120 million years ago, have been discovered in the Ancash region of central Peru.

The find came when the Antamina mining company, which is owned by BHP Billiton and Xstrata, among other partners, was building a road from its camp at Yanacancha to the Conococha crossroads, in Huari province, some 400 km northeast of Lima.

The company confirmed that a preliminary examination of the site, which is 4,600 metres above sea level, revealed more than 100 footprints made by at least 12 different types of ancient animals, including marine species, demonstrating that in the distant past the site lay at the bottom of an ancient ocean.

According to calculations by the paleontologists in charge of these finds, the site could date back to the Early Cretaceous Period about 120 million years ago.

Some of the fossils discovered there, the daily El Comercio reported, are from large marine reptiles known as sauropterygians, complete skeletons of which were found.

Other fish-like reptiles called ichthyosaurs were also found there, along with extinct species of crocodiles, flying reptiles called pterosaurs, tortoises and fish, not to mention very well-preserved specimens of assorted invertebrates.

The paleontological work in the area dates back to 2006, when construction on the road began and exposed potentially fossil-bearing layers of sediment, according to an analysis conducted by the Ornithology and Biodiversity Centre, known as Corbi.

The excavations performed to date at the site, which is called Cruz Punta, at Kilometer 80 of the highway, revealed a rocky wall-like formation several dozen metres in length on which there were clear indications of fossilised animal tracks, according to the Corbi study.

source: hindustantimes

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The footprints of a prehistoric animal are clear to see in a rock layer in Peru

The footprints of a prehistoric animal are clear to see in a rock layer in Peru

from: metro.co.uk

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20minuten

Dinosaurier auf 4600 Metern gefunden
20minuten – 15 ore fa
Dabei stiessen die Strassenbauer auf über hundert fossile Abdrücke und Knochen von Dinosaurier-Arten, die vor etwa 120 Millionen Jahren gelebt haben. Bei den Funden konnten zwölf verschiedene Arten unterschieden werden, darunter fleischfressende

febbraio 12, 2009 Posted by | - Plesiosauri, - Pterosauri, - R. Dinosauri, - Rettili, 1 Cretaceo, America Central, An. Vertebrates, Lang. - German, Mesozoic, P - Impronte, P - Ritrovamenti fossili, Paleontology / Paleontologia | , , , , , | 2 commenti

2009-02-02 – “Hatching the Past” the Dinosaur eggs exhibition

Dino eggs exhibit to open in St. George

Hatching the Past » Display examines how to tell if a rock might really be a fossilized egg.

The Salt Lake Tribune

febbraio 2, 2009 Posted by | Mostre & Fiere, Musei, Paleontology / Paleontologia, Places | , , , | 2 commenti

2009-01-18 – Minotaurasaurus Ramachandrani: a new dinosaur from Gobi desert

New dinosaur species named after Indian-origin scientist

New Delhi (PTI): A previously unknown species of dinosaurs found in the Gobi desert has been named after an Indian-origin scientist who made available a virtually complete skull in his possession for scientific scrutiny.

American paleontologists Clifford Miles and Clark Miles, who studied the skull with a bull-like appearance with flared nostrils, described it as belonging to a new genus and species of ankylosaurid.

Ankylosaurids are armoured dinosaurs that evolved about 125 million years ago and were found in North America, East Asia and Europe.

Indian-origin scientist V.S. Ramachandran bought the skull from a Japanese fossil collector and displayed it at the Victor Valley Museum, California.

The U.S. scientists at the Western Paleontological Laboratories in Utah named the new species as Minotaurasaurus Ramachandrani, after Ramachandran made the skull available to them.

Miles reported their findings in the latest issue of Indian research journal Current Science.

The generic name ‘Minotaurasaurus’ means ‘man-bull reptile’ in Latin. The species has been named so because of the bull-like appearance of the skull which was found in the Gobi desert.

The paleontologists believe that the 30cm long skull represents a new dinosaur that grew to about 4.2m long from a family of extinct reptiles called ankylosaurid.

The ankylosaurids had thick armoured plating of fused bone often interspersed with a variety of spikes and lumps. Some species even had armoured eyelids.

The specimen studied by Miles has complete triangular skull and highly ornamented nasal which give the skull a bull-like appearance with flaring nostrils making it one of the most ornamental dinosaurs discovered yet.

Studies indicates that the animal was not fully grown and, therefore, it is likely that larger animals could be discovered soon.

The teeth of the dinosaur are leaf shaped with each one bearing vertical striations (series of ridges) dividing the crown surface into eight cusps.

If validated, then this distinct species might join a handful of other Indian name bearing dinosaurs species like Barapasaurus tagorie, Kotasaurus yamanapalliensis, found in Andhra Pradesh and Rajasaurus narmadensis in Gujarat.

source: http://www.hindu.com/thehindu/holnus/008200901171011.htm

gennaio 18, 2009 Posted by | - R. Dinosauri, 1, 1 Cretaceo, An. Vertebrates, Asia, Mesozoic, P - Ritrovamenti fossili, Paleontology / Paleontologia | , , , , , , , | Lascia un commento