The well-studied segmentation cascade of Drosophila melanogaster represents a derived mechanism compared with that of other arthropods. The degree of conservation of genes that function in successive ...

Despite differences in shape and size all insects are characterized by a body organization that includes three units: a head, thorax and abdomen (panels A-B). In contrast all spiders (and other ...

Rare fossils preserving the brains of creatures living more than half a billion years ago shed new light on the evolution of arthropods. Exquisitely preserved fossils left behind by creatures living ...

Arthropods crawl and buzz around us in the wild and on farmlands, on the street and at home, under our floors and in our plumbing systems, even in our food and on our bodies. But while we often are ...

For over a century, the Cambrian arthropod Helmetia expansa remained a mystery. Discovered by paleontologist Charles Doolittle Walcott in 1918, it was initially classified as a crustacean. Despite ...

Researchers have detected previously overlooked eyes whose form and function could help to improve the evolutionary classification of archaic arthropods. Trilobites, prehistoric sea creatures, had ...

Researchers formally describe Helmetia expansa, offering new insights into its anatomy, behavior and evolutionary relationships. For over a century, the Cambrian arthropod Helmetia expansa remained a ...