From the 20-foot-long jawbones of the filter-feeding blue whale to the short, but bone-crushing, jaws of the hyena and the delicate chin bones of a human, the pair of lower jawbones characteristic of ...

Using the largest and most informative molecular phylogenetic dataset ever analysed, evolutionary biologists were able to construct a new phylogenetic tree of jawed vertebrates. This new tree resolves ...

About 445 million years ago, Earth’s oceans turned into a danger zone. Glaciers spread across the supercontinent Gondwana, ...

This story was updated at 11:00 AM June 1 The basic decision-making circuitry underlying social behaviors such as fighting and mating is incredibly similar in all vertebrates, from fish to mammals, ...

Paleontologists have recreated the cranial structure of a 308-million-year-old lizard-like vertebrate that could be the earliest example of a reptile and explain the origin of all vertebrates that ...

Eight of every ten species extinctions has occurred on islands, and invasive mammals are the leading reason for those losses. Currently, 40 percent of species at risk of global extinction are island ...

On average, 52 species of mammals, birds and amphibians are taking a significant step toward extinction each year, a huge new analysis says. But if not for conservation efforts, the march would be ...

A fifth of the world’s vertebrate species (i.e. mammals, birds, reptiles, amphibians, and fish) are threatened with extinction, according to a massive new study by the International Union for the ...

The hippocampus forms part of the cerebral cortex and is found in all vertebrates. This structure has a long evolutionary history, over which some features have been conserved, such as its connection ...

The Juan Fernandez firecrown is endemic to Robinson Crusoe Island. Key threats to this critically endangered species include habitat loss, due in part to invasive herbivores, and predation by invasive ...