Drawing on comparative developmental biology, classical embryological studies, and data from the arthropod fossil record, the ...

New study sheds light on how insects, spiders, crustaceans, and other arthropods evolved their distinct body structures. By tracing these patterns ...

Drawing on comparative developmental biology, classical embryological studies, and data from the arthropod fossil record, the study identifies three ancestral developmental zones from which all ...

A 444 million-year-old arthropod fossil, discovered 25 years ago, has been identified. The fossil, named Keurbos susanae, was found in South Africa's Soom Shale. Unusually, it's preserved inside ...

For years, a mysterious fossil specimen defied categorization, until one paleontologist made a surprising discovery.

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.

Why do some ancient animals become fossils while others disappear without a trace? A new study reveals that part of the answer lies in the body itself. The research shows that an animal's size and ...