Within the Eukaryote domain, living things are further categorized into four kingdoms: animals, plants, fungi, and protists ... How did Prototaxites evolve, and why did they disappear?

A new study by Prof. Ariel Chipman of The Alexander Silberman Institute of Life Science at the Hebrew University of Jerusalem ...

Scientists revisited tracks made by a shorebird, a lizard, a cat-like predator and some sort of large herbivore at what is ...

One possibility is that intelligence in vertebrates — animals with backbones, including mammals and birds — evolved once. In that case, both groups would have inherited the complex neural pathways ...

Australian and Dutch researchers have uncovered a remarkable evolutionary adaptation in birds that could hold vital clues for ...

The anus is a wildly successful innovation, but how did it evolve? A genetic analysis suggests it probably began as an opening used to release sperm that later fused with the gut – an example of ...

The eukaryotic cell, the most significant increase in complexity in the history of life's evolution on Earth, emerged as a phase transition and unlocked the path toward other major transitions ...

Corinthia Black studies the anatomical features of fishes and spiders to understand how life on Earth takes shape ...

Nature's ingenuity is evident in the fascinating adaptations of animals, including the presence of multiple hearts. While most creatures rely on a single heart, some have evolved additional hearts ...

New research reveals that stentors, which are part of a group called protists, may address this ... was a key step that led to the eventual evolution of multicellular life on Earth.

These animals eventually evolved to into a diverse range of clads, such as ichthyosaurs, whales, and penguins, among others, that were independently optimized to swim in water and thrive in this ...