Search Results for: Vertebrates
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1,539 results
1,539 results for: Vertebrates
- Life
Fossil pushes back land-animal debut
Creatures first squished mud through their five toes millions of years earlier than previously believed.
- Paleontology
T. rex has another fine, feathered cousin
A trio of fossils from China may tip the scales on dinosaurs’ public image.
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Brain not required for antidepressant to act
In brewer’s yeast, the drug sertraline distorts membranes and triggers a self-cannibalizing process.
- Life
Blue-green algae release chemical suspected in some amphibian deformities
Retinoic acid levels high in waterways rich in cyanobacteria blooms.
- Paleontology
Not your typical pterosaur
A beautifully preserved fossil from Germany displays a wing unlike any ever seen.
- Paleontology
Bumpy Bones: Fossil hints that dinosaur had feathery forearms
A series of knobs on the forearm bone of a 1.5-meter-long velociraptor provides the first direct evidence of substantial feathers on a dinosaur of that size.
- Paleontology
Digging the Scene: Dinos burrowed, built dens
Dinosaurs remains fossilized within an ancient burrow are the first indisputable evidence that some dinosaurs maintained an underground lifestyle.
- Paleontology
The first matrushka
A newly found fossil preserves one creature inside another that lies nestled inside yet another, a Paleozoic version of the Russian nesting dolls known as matrushkas.
- Paleontology
Deinonychus’ claws were hookers, not rippers
The meat-eating dinosaur Deinonychus probably used the large, sicklelike claw on its foot to grip and climb large prey, not disembowel it.
- Paleontology
Dinosaurs matured sexually while still growing
Distinctive bone tissue in fossils of several dinosaur species suggests that the ancient reptiles became sexually mature long before they gained adult size.
- Paleontology
Meet the old wolves, same as the new wolves
The dire wolf, an extinct species preserved in abundance at the La Brea tar pits, seems to have had a social structure similar to that of its modern-day relatives.
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Extreme Healing: Protein aids limb regrowth in newts
The ability of newts to regenerate severed limbs depends crucially on a protein released by the insulating sheath around nerves.
