Some beetles are born with an imbalance rare in nature: They only have one testicle. A new study found that three major groups of beetles, all of the carabid family, lack the usual second testicle.

Tsukuba, Japan—In nature, flowers may share morphological features, even across distantly related species. Bilateral symmetry is one such feature found in flowers of various taxa, such as orchids and ...

Missouri’s most common fossil is an invertebrate, the crinoid, also known as “sea lilies”. Despite the name, they’re more ...

A new sunflower family tree reveals that flower symmetry evolved multiple times independently. Species of the sunflower family with or without bilateral flower symmetry. Chrysanthemum lavandulifolium ...

On the edge of Thai forests, an astonishing creature has been discovered, defying traditional biological classifications.

NGC 891, an edge-on galaxy, is visible with a telescope. Its dust lanes make it harder to see than other edge-on galaxies. Supernovae and star formation created its filamentary structure. It shows ...

The Story of How the Starfish Got its Arms Reminds us that Animals have Deep Histories. The story of how the starfish got its arms reminds us that even animals that might be familiar to us today can ...

Along the ocean floor lives an unusual multi-armed creature. No, not the octopus, the starfish: an animal from the echinoderm family known for its spines and bumps and, most importantly for some ...

In case you've faced some hurdles solving the clue, Flower with bilateral symmetry, we've got the answer for you. Crossword puzzles offer a fantastic opportunity to engage your mind, enjoy leisure ...