Earth’s vertebrate diversity may be far richer than anyone realized. A sweeping analysis of more than 300 studies suggests that for every known fish, bird, reptile, amphibian, or mammal species, there ...

Vertebrate morphology exhibits remarkable diversity, reflecting a complex interplay of developmental processes, genetic regulation and environmental pressures. This variation arises from a combination ...

A new study led by researchers at the University of Arizona suggests that for every recognized vertebrate species, there are, on average, two ...

Scientists discovered some of the oldest bony fish fossils in China. The fossils explain the early history of animals with backbones.

Hutton, Nicholas, III. 1976. "Origin and Radiation of the Classes of Poikilothermous Vertebrates." In Evolution of brain and behavior in vertebrates. Masterton, R ...

518-million-year-old fossil reveals vertebrates once had four eyes and extra organs that later shaped evolution.

(SALT LAKE CITY)—An international group of researchers, including three from the University of Utah, has made some surprising discoveries that shed light on the evolution of land vertebrates from ...

Charles Darwin proposed that evolution is driven by gradual variations in organisms that have a survival advantage in a changing environment. But University of Maryland evolutionary biologist Karen ...