1,929 results
- Paleontology
Old Softy: Tyrannosaurus fossil yields flexible tissue
Scientists analyzing fragments of a Tyrannosaurus rex's leg bone have recovered soft, pliable material, including structures that apparently are cells and blood vessels.
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19504
I was disappointed in news coverage of this dinosaur find in China. Science News and others ran an illustration with an obvious mistake. Unless the newly discovered mammal, Repenomamus giganticus, and its smaller cousin, Repenomamus robustus, were unique animals, they did not have legs that emerged from their sides giving them a sprawling, reptilian body […]
- Paleontology
Dino Dwarf: Island living may have led to ancient downsizing
Fossils unearthed at a German quarry hint that members of one species of dinosaur that lived in the region about 152 million years ago evolved to be abnormally small because of the constraints of its island ecosystem.
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19453
I wonder if the growth rings appearing in dinosaur bones are analogous to those of trees, which are determined by the annual climatic cycle. Is it possible that the dinosaur rings were created on a different time cycle? James HendryFlorissant, Mo. Researchers say that they haven’t come up with another type of cycle that seems […]
- Paleontology
First Steps
Using materials as diverse as lobster eggs, dead birds, and the headless carcass of a rhinoceros, scientists are conducting experiments that scrutinize the first steps of the fossilization process.
- Paleontology
Allosaurus as a Jurassic headbanger
The skull of the carnivorous dinosaur Allosaurus fragilis can resist levels of stress much higher than those expected from chewing, which may provide insight into the animal's method of attacking its prey.
- Humans
Science News of the Year 2005
A review of important scientific achievements reported in Science News during the year 2005.
- Humans
From the July 28, 1934, issue
Swamp dinosaur fossils found in Wyoming, secrets of famous violin makers revealed, and a cancer-causing virus.
- Paleontology
Calling all orthodontists. . .
Researchers have unearthed fossils of a theropod dinosaur whose front teeth grew almost directly forward, which sets it apart from all other related species.
- Paleontology
Growth Spurt: Teenage tyrannosaurs packed on the pounds
Detailed analyses of tyrannosaur fossils suggest that the creatures experienced an extended growth spurt during adolescence.
- Humans
Letters from the October 30, 2004, issue of Science News
It isn’t academic Speaking as someone with a Ph.D. in math who has spent most of his 30-year professional life unemployed and who can probably look forward to spending the rest of it unemployable, I was disappointed that “Where Ph.D.s pay off” in (SN: 8/7/04, p. 94: Where Ph.D.s pay off) made no apparent effort […]
- Earth
Lowering the Boom? Impact crater may predate extinction of the dinosaurs
Analyses of sediments from the Yucatán in Mexico suggest that an extraterrestrial impact there more than 65 million years ago actually happened about 300,000 years before mass extinctions of dinosaurs occurred.
