Three species that lived about 308 million years ago challenge the idea that the first land vertebrates underwent ...

What did the very first complex vertebrate brain look like? To find out, scientists turned to an unlikely time traveler: the ...

Researchers recently discovered that the sea lamprey, a modern representative of ancient jawless vertebrates, fights invading pathogens by generating up to 100 trillion unique receptors. These ...

Scientists have long puzzled over the gap in the fossil record that would explain the evolution from invertebrates to vertebrates. Vertebrates, including fishes, amphibians, reptiles, birds, mammals, ...

Researchers have long assumed that a tube in the famous Pikaia fossil ran along the animal’s back. But a new study turned the fossil upside down. By Carl Zimmer Over the past 500 million years, ...

A new study constructs the first 3D single-cell brain atlas of the lamprey, uncovering the 450-million-year-old molecular ...

"It took 10 people over a week just to find this one tiny 10-millimeter adult." ...

A harlequin poison dart frog (Oophaga sylvatica) is pictured at the Tesoros de Colombia (Treasures of Colombia) sustainable farm in Nocaima, Cundinamarca department, Colombia, on July 9, 2024.

'Junk DNA' could hold the secret of the evolutionary origin of complex animals, according to new research. Vertebrates - animals such as humans that possess a backbone - are the most anatomically and ...