Arthropods belong to an evolutionary branch – the ecdysozoa – that contains about half of all animal species, and the earliest fossil evidence of the group now dates back 550 million years ...

A team of palaeontologists have discovered what they believe is the world’s oldest animal sperm, frozen inside a tiny crustacean in a blob of tree resin in Myanmar 100 million years ago.

A worm-like creature preserved in ancient rock has just been identified as the oldest known relative of insects, spiders and crustaceans. Receive a weekly dose of discovery in your inbox! We'll also ...