Search Results for: Vertebrates
Skip to results
1,539 results
1,539 results for: Vertebrates
- 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.
-
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.
-
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.
- Paleontology
Sight for ‘Saur Eyes: T. rex vision was among nature’s best
A study of dinosaur eyes finds that Tyrannosaurus rex had very sophisticated vision that may have helped its predatory abilities.
- Animals
Bumblebee 007: Bees can spy on others’ flower choices
Bumblebees that watched their neighbors feast on unusual flowers often later checked out the same kinds of blossoms themselves, a behavior that amounts to social learning.
-
Macho Makeover: Fish rapidly ascend social ladder
Some male fish can upgrade their social status, and their appearance, in a matter of minutes.
-
Air’s oxygen content constrains insect growth
The size to which insects grow is limited by their need to route oxygen to tissues in their legs.
-
Quirky Cardiology: Crocs’ hearts may aid their digestion
The crocodile's ability to direct oxygen-depleted blood to its stomach may be instrumental in digesting large, bony meals.
- Chemistry
Whiff Weapon: Pheromone might control invasive sea lampreys
Researchers have characterized the primary components of the migratory pheromone that guides sea lampreys to suitable spawning areas.
-
Genome Buzz: Honeybee DNA raises social questions
Scientists have officially unveiled the DNA code of the western honeybee, the first genome to be sequenced for an animal with ultrastratified societies.
- Paleontology
Rodents tell a geologic tale
The sudden appearance of many new species of rodents in Chile about 18 million years ago may have marked the rise of the southern Andes.
- Paleontology
DNA analysis reveals extinct type of wolf
New genetic analyses of the remains of gray wolves found in Alaska indicate that a distinct subpopulation of that species disappeared at the end of the last ice age, possibly because of its dietary habits.
