Search Results for: Vertebrates
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1,546 results
1,546 results for: Vertebrates
- Life
Saber-toothed cats strong-armed prey
Smilodon fatalis used strong forelimbs to pin victims, an analysis of fossils shows.
- Life
For ducks, penis length depends on the other guys
Male genitals grow longer with more competition from other males.
- Paleontology
The hunchback of central Spain
An exquisitely preserved dinosaur from central Spain has a hump on its back and suggestions of featherlike appendages on its arms. The primitive carnivore lived about 125 million years ago and may push back the first known instance of feathers on the dinosaur family tree.
- Life
News in brief: Fins to limbs with flip of genetic switch
Boost of gene activity may help explain how arms and legs evolved in vertebrates.
- Life
Victorian zoological map redrawn
Species distribution patterns that inspired Darwin and Wallace get an update.
- Life
Ancestors of today’s placental mammals may never have shared the Earth with dinosaurs
A newly constructed family tree dovetails with the fossil record, but differs considerably from previous genetic studies by suggesting that placental mammals emerged after the dinosaur extinction.
- Life
How mammals grow ears: With a flaw
A newly discovered rupture-and-repair process that occurs in embryos could explain a lot about infections and hearing defects.
- Life
Dinosaur embryos were restless, speedy growers
Hundreds of fossils found in China suggest some unhatched dinos kicked their legs.
- Life
Coelacanth is not closest fishy relative of terrestrial animals
Genes of “living fossil” do reveal changes needed to live on dry land.
- Anthropology
Evolutionary Back Story: Thoroughly modern spine supported human ancestor
Bones from a spinal column discovered at a nearly 1.8-million-year-old site support the controversial possibility that ancient human ancestors spoke to one another.
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Blood Sucker: Like the adult heart, the developing heart takes advantage of suction
The embryonic heart works more like the adult heart than scientists had long assumed.
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Mammalian ear cells can regenerate
The cells responsible for hearing in mammals may be capable of regeneration, just as those of birds and other vertebrates are.
