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Saturday, February 6, 2010
Tiny dinos died after falling into 160-mln-yr-old deep footprints of larger beasts
The exceptional Fossil haul of feathered dinosaurs in a 160-million-year-old marsh in China proposes that they perished after falling into the deep muddy footprints of larger beasts.
According to a report in New Scientist, David Eberth of the Royal Tyrrell Museum in Drumheller, Alberta, Canada, established partial skeletons of 18 small two-legged Dinosaurs in the 160-million-year-old sediments.
They were stacked on top of each other, apparently after becoming trapped about circular swampy pits.
The pits enclose distinctive red fragments of crust mixed into the mud.
The palaeontologists reckon this is the effect of large, heavy sauropod feet breaking through a crusty surface layer to watery mud beneath.
A thin crust would have formed hiding the trap from an unsuspecting tiny dinosaur but unable support its weight.
The thin crust would have buried the trap from an unsuspecting small dinosaur.
Fifteen of the fossils were Limusaurus inextricabilis, an odd bipedal dinosaur with tiny arms and a beak.
Even though it belonged to a group of predators it appears to have eaten plants.
"The victims were less than 1 meter tall and 1 to 3 meters long, so they would have been too short to drive against the bottom, which was 1 or 2 meters beneath the surface of the watery mud," said Eberth.
Their arms would have been enveloped with mud-slicked feathers and too small to pull them out of the hole.
"Finding any fossil remains like these, whose presence depends on the activities of other dinosaurs is bizarre." Eberth said.
Labels: Dinosaur eggs, Dinosaur image, Dinosaur model, Dinosaur photo, Dinosaur skeleton
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Thursday, December 17, 2009
Meet "Antonio"- A New Italian Dinosaur
According to Fabio M. Dalla Vecchia, who precede the project, Antonio is noteworthy on many counts. Dalla Vecchia, a researcher at both the the Universitat Autònoma de Barcelona and the Institut Català de Paleontologia told Discovery News that this dinosaur:
• is only the 2nd ever dinosaur species named in Italy
• is the most complete medium to large sized dinosaur ever originate in Europe
• might be one of the most complete dinosaur skeletons in the world
• be evidence for the first time what close relatives to duck-billed dinosaurs looked like in detail
Tethyshodros insularis imply "island dweller hadrosaurid dinosaur of Tethys."
Tethys was an ocean that splited Africa from the Euro-Asia continent during
dinosaur times. The new dinosaur species survived on a small island in the western part of this ocean 70 million years ago. Dalla Vecchia utters that this was an unusual spot for such an animal, comparable to an elephant being found in the Bahamas today.
Labels: Dinosaur eggs, Dinosaur photo, Dinosaur skeleton, Dinosaur teeth
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