This spiky fossil shows what early mollusks looked like

It and 17 fossils from more than 500 million years ago help piece together an evolutionary gap

a fossil on a rock shows a oval-shaped creature with spikes all over its body

When viewed from above, spines covering the body of a fossilized mollusk dubbed Shishania aculeata make the creature look like a prickly fruit. The newly described fossil shows what early mollusks looks like more than 500 million years ago.

G. Zhang, L. Parry

An animal that could be mistaken for a spiky fruit is giving scientists a peek into what mollusks looked like around 500 million years ago.