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TOPIC: Dinosaurs
Blobrana


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RE: Dinosaurs
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Grant to help preserve the first-found dinosaur fossils

The Yale Peabody Museum of Natural History has received a grant to re-house and secure the long-term preservation of the collections of dinosaur fossils that Othniel Charles Marsh brought back from the American West in the 19th-century - including the remains of such now well-known dinosaurs as Apatosaurus (Brontosaurus), Allosaurus, Stegosaurus and Triceratops.
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Blobrana


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Brontomerus mcintoshi
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New 'thunder-thighs' dinosaur discovered

A new dinosaur named Brontomerus mcintoshi, or "thunder-thighs" after its enormously powerful thigh muscles, has been discovered in Utah, USA. The new species is described in a paper recently published in the journal Acta Palaeontologica Polonica by an international team of scientists from the U.K. and the U.S.
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Blobrana


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Brontomerus
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Scientists have named a new dinosaur species "thunder-thighs" because of the huge thigh muscles it would have had.
Fossil remains recovered from a quarry in Utah, US, are fragmentary but enough to tell researchers the creature must have possessed extremely powerful legs.
The new species, described in the journal Acta Palaeontologica Polonica, is a sauropod - the family of dinosaurs famous for their long necks and tails.
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Blobrana


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Dinosaur bone discovery suggests some lived long after meteorite

A fossilised sauropod bone, dated by a team of Canadian and U.S. scientists to 64.8 million years ago, appears likely to force a serious rethinking of the demise of dinosaurs, which were supposed to have been wiped out in a catastrophic meteorite strike no later than 65.5 million years ago -700,000 years before the death of the giant, vegetarian beast that left its femur behind in present-day New Mexico.



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Blobrana


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Title: A New Sauropodomorph Dinosaur from the Early Jurassic of Patagonia and the Origin and Evolution of the Sauropod-type Sacrum
Authors: Diego Pol, Alberto Garrido, Ignacio A. Cerda

The origin of sauropod dinosaurs is one of the major landmarks of dinosaur evolution but is still poorly understood. This drastic transformation involved major skeletal modifications, including a shift from the small and gracile condition of primitive sauropodomorphs to the gigantic and quadrupedal condition of sauropods. Recent findings in the Late TriassicEarly Jurassic of Gondwana provide critical evidence to understand the origin and early evolution of sauropods.
A new sauropodomorph dinosaur, Leonerasaurus taquetrensis gen. et sp. nov., is described from the Las Leoneras Formation of Central Patagonia (Argentina). The new taxon is diagnosed by the presence of anterior unserrated teeth with a low spoon-shaped crown, amphicoelous and acamerate vertebral centra, four sacral vertebrae, and humeral deltopectoral crest low and medially deflected along its distal half. The phylogenetic analysis depicts Leonerasaurus as one of the closest outgroups of Sauropoda, being the sister taxon of a clade of large bodied taxa composed of Melanorosaurus and Sauropoda.
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Blobrana


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How to name a dinosaur

A dinosaur's name is often the first impression it will present to the public. Though the standard pantheon of the most popular dinosaurs - you know, the ones even my grandmother can name - has been in place for a century, it's always susceptible to invasion by a charismatic newcomer, as was proven by Velociraptor's leap into the public consciousness in the 1990's. If a novelist, comic artist, or screenwriter latches onto the name of your dinosaur, it could very well be fast-tracked for celebrity.
Above all, remember that the name you choose for your backyard discovery will say as much about you as it does about the bones in the museum.
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Blobrana


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Eggs with the oldest known embryos of a dinosaur found

Palaeontologists have identified the oldest known dinosaur embryos, belonging to a species that lived some 190 million years ago.
The eggs of Massospondylus, containing well-perserved embryos, were unearthed in South Africa back in 1976.
The team writes in the Journal of Vertebrate Paleontology that the dino was an ancestor of the giant, plant-eating sauropods, such as Brontosaurus.
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Blobrana


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The oldest-known embryos of any land-dwelling animal ever found show the infancy and growth of early dinosaurs had something in common with humans, says a group of Toronto researchers.
The researchers, including University of Toronto Mississauga palaeontologist Robert Reisz and David Evans, a curator in vertebrate palaeontology at the Royal Ontario Museum, examined delicate fossilised eggs dating from the early part of the Jurassic period, 190 million years ago.
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Blobrana


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Scientists say they've found the first complete skeleton of a dinosaur that is an ancestor to the sauropod, the largest creature ever to walk the planet. The 30-foot-long skeleton, complete with skull, may help reveal the story of how the 120-foot-long, giant-necked sauropods evolved and became solely plant eaters.
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Yizhousaurus sunae
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Title: A COMPLETE SKELETON OF A BASAL SAUROPOD DINOSAUR FROM THE EARLY JURASSIC OF CHINA AND THE ORIGIN OF SAUROPODA
Authors: CHATTERJEE, Sankar, WANG, T., PAN, S.G., DONG, Z., WU, X.C., and UPCHURCH, P.

Sauropods were very successful group of herbivorous dinosaurs in terrestrial ecosystems, but their early evolution is poorly understood because of a highly incomplete fossil record. Characterizing the evolutionary history of early sauropods is central to understanding their rise and diversification in the Jurassic and Cretaceous. Here we report the discovery of a nearly complete and exquisitely preserved skeleton of a basal sauropod from the Lower Lufeng Formation (Early Jurassic) in Yunnan, China that fills a critical gap in the early evolution of sauropod dinosaurs. The new taxon, Yizhousaurus sunae gen. et sp. nov., is the most complete basal sauropod currently known with intact skull; it is an important transitional fossil documenting the evolution of sauropods from prosauropods. The skull of Yizhousaurus is particularly significant because basal sauropods are diagnosed solely on the basis of fragmentary postcranial material. The new material reveals a mosaic of plesiomorphic and derived features that clarify early sauropod evolution, increase our anatomical knowledge of basal sauropods, and shed new light on their patterns of early diversifications.

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