Even Charles Darwin was puzzled by the evolution of the vertebrate eye. New research suggests that it traces back to a cyclopean invertebrate with a single eye atop the head.

There is a tiny cyclops among your oldest ancestors, and humans share these remarkable ancestral roots with all other ...

Some of the earliest roots of the human eye appear to lie in a small marine animal that lived nearly 600 million years ago. Researchers at Lund Univer.

The earliest recorded vertebrates had four eyes to escape predators in the ancient Cambrian ocean, according to half-a-billion-year-old fossils from China that shed light on our evolutionary origins.

Fossils of the prehistoric fish genus myllokunmingiid, more than 518 million years old, reveal that early vertebrates may have had four functional eyes. Researchers found that two large lateral eyes ...

Learn how a second pair of eyes helped this 518-million-year-old fish evade predators. Spiders have eight eyes, bees have five, and boxed jellyfish have 24 — but these are the exceptions. The vast ...

A research team at Yunnan University has found that the earliest known vertebrates from the Cambrian Period may have ...

Researchers report February 15 in the journal Cell that ancient viruses may be to thank for myelin—and, by extension, our large, complex brains. The team found that a retrovirus-derived genetic ...

Hundreds of millions of years ago, the first animals to crawl onto land were strict meat-eaters, even as plants had already taken over the landscape. Now scientists have uncovered a ...

Tidal marshes : home for the few and the highly selected / Russell Greenberg -- The Quaternary geography and biogeography of tidal saltmarshes / Karl P. Malamud-Roam [and others] -- Diversity and ...

Corticoid receptors, encompassing both glucocorticoid and mineralocorticoid receptors, are pivotal to the regulation of physiological processes across vertebrates. These receptors have evolved through ...