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The study done by researchers at the University of Calgary and Montana State University examined fossilized groups of eggs from a small, meat-eating dinosaur called Troodon. The eggs were found in Alberta, Canada and Montana. Due to the scarce amount of evidence, paleontologists have long searched for answers about how dinosaurs hatched their young. Crocodiles, a close relative of dinosaurs, bury their eggs in nesting material, usually sand or dirt, while birds lay their eggs in the open or non-covered nests.
Darla Zelenitsky, assistant professor in the Department of Geoscience at the University of Calgary, explored the unusual nesting habits of the small meat-eating Troodon dinosaur by studying the shells of fossil eggs.
The Troodon appears to have laid its eggs vertically, with only the bottoms of the eggs buried in mud, concluded researchers in a finding that was published in the spring issue of Paleobiology. Based on our calculations, the eggshells of Troodon were very similar to those of brooding birds, which tells us that this dinosaur did not completely bury its eggs in nesting materials like crocodiles do, says study co-author Darla Zelenitsky, assistant professor of geoscience at the University of Calgary. Researcher David Varricchio of Montana State University added that the eggs studied indicated only a partial burial, meaning an adult would have directly contacted the exposed parts of the eggs during incubation.
The bird-like Troodon lived in North America 77 million years ago.
The bird-like Troodon lived in North America 77 million years ago. A key to the finding was comparing the number of pores in the Troodons eggs to those of crocodiles and other birds that completely bury their eggs. Pores allow for respiration, and crocodile eggs have more pores than those of a brooding bird. In the case of the Troodon eggs, there were relatively fewer pores indicating the eggs may not have been completely buried. For now, this particular study helps substantiate that some bird-like nesting behaviors evolved in meat-eating dinosaurs prior to the origin of birds. It also adds to the growing body of evidence that shows a close evolutionary relationship between birds and dinosaurs, Zelenitsky says.
Dinosaurs May Have Sat on Eggs Like Chickens
The one third of the population that doesn't believe there is any link between man and ape aren't going to believe this regardless of the amount evidence.Tyrannosaurus Rex And Mastodon Protein Fragments Discovered, Sequenced
Scientists believe that enough soft tissue has been discovered to prove the link between birds and dinosaurs. Is that cool or what?
Yet another hadrosaur has been described by UK scientists as "absolutely gobsmacking." Its tissues were "extremely well preserved" and contained "soft-tissue replacement structures and associated organic compounds."...Biblical data, however, not only provide the timeframe for the death of these dinosaurs in Flood deposits a few thousand years ago, but also a mode of deposition in agreement with observable data that their demise occurred when they "fell into a watery grave."
Tyrannosaurus Rex And Mastodon Protein Fragments Discovered, Sequenced
Scientists believe that enough soft tissue has been discovered to prove the link between birds and dinosaurs. Is that cool or what?
Scientists recover T. rex soft tissue - Technology & science - Science | NBC NewsMarch 24, 2005 - For more than a century, the study of dinosaurs has been limited to fossilized bones. Now, researchers have recovered 70 million-year-old soft tissue, including what may be blood vessels and cells, from a Tyrannosaurus rex.
If scientists can isolate proteins from the material, they may be able to learn new details of how dinosaurs lived, said lead researcher Mary Higby Schweitzer of North Carolina State University...Schweitzer said that after removing the minerals from the specimen, the remaining tissues were soft and transparent and could be manipulated with instruments.
The bone matrix was stretchy and flexible, she said. Also, there were long structures like blood vessels. What appeared to be individual cells were visible.
She did not know if they were blood cells. "They are little round cells," Schweitzer said.
And.....
I thought you went to school rdean, why would you claim that scientists discovered soft tissue?
Watching liberals try to manipulate it is interesting.And.....
Isn't science interesting?
Watching liberals try to manipulate it is interesting.And.....
Isn't science interesting?
Be patient.Watching liberals try to manipulate it is interesting.Isn't science interesting?
Huh?
Tyrannosaurus Rex And Mastodon Protein Fragments Discovered, Sequenced
Scientists believe that enough soft tissue has been discovered to prove the link between birds and dinosaurs. Is that cool or what?
Tyrannosaurus Rex And Mastodon Protein Fragments Discovered, Sequenced
Scientists believe that enough soft tissue has been discovered to prove the link between birds and dinosaurs. Is that cool or what?
I'll go with "cool."
"or what?" would definitely have been my second choice, though.
Tyrannosaurus Rex And Mastodon Protein Fragments Discovered, Sequenced
Scientists believe that enough soft tissue has been discovered to prove the link between birds and dinosaurs. Is that cool or what?
Do you realise that your article is six years old and there are articles back to 2005?
