Search Results for: Vertebrates
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1,560 results
1,560 results for: Vertebrates
- Earth
Mammals moving between the Americas stopped over in Mexico
Ancient mammals may have had an easier time moving across the Isthmus of Panama from north to south thanks to Mexico’s climate.
- Paleontology
Mummified reptile hints at the origins of how we breathe
A cave preserved two animals’ rib cages, cartilage and even traces of protein, revealing a flexible breathing apparatus like that of today’s land dwellers.
- Animals
Spider silk-making organs evolved due to a 400-million-year-old genetic oops
An ancient ancestor of spiders and relatives doubled its genome about 400 million years ago, setting the stage for the evolution of spinnerets.
- Paleontology
If wings came before flight, what were they for?
Scientists use simulated dinosaurs to trigger real insect brains and test how wings originally evolved.
- Life
Talking dogs and chatty cats could one day ‘speak’ in our language
Advances in decoding animal sounds might someday make animal translators a possibility.
- Ecosystems
Food chains in Caribbean coral reefs are getting shorter
Shorter food chains could mean reefs are less able to weather changes in food availability, threatening an already vulnerable ecosystem.
- Genetics
Why African striped mice can be the best of dads — or the worst
Environmental cues can flip a molecular switch in the brain, turning males from caregivers to killers.
- Genetics
The Amazon molly — a sex-skipping fish — hacks evolution
The Amazon molly reproduces without sex. A genomic copy-and-paste trick called gene conversion may explain how it avoids evolutionary meltdown.
- Animals
Huge relatives of white sharks lived earlier than thought
Lamniform sharks such as great whites and tiger sharks are famous for their size. The first such giants evolved 15 million years earlier than thought.
- Animals
How Greenland sharks defy aging
When it comes to bucking the biological ails of aging, humans could learn something from Greenland sharks.
- Animals
This lizard can tolerate extreme levels of lead
Cuban brown anoles have the highest blood lead levels of any vertebrate known — three times that of the previous record holder, the Nile crocodile.
- Animals
What the longest woolly rhino horn tells us about the beasts’ biology
A nearly 20,000-year-old woolly rhino horn reveals the extinct herbivores lived as long as modern-day rhinos, despite harsher Ice Age conditions.
