Ammonoidea

Ancient Sea Friends

Ammonoidea, often called ammonites, were special sea creatures that lived long, long ago. They had beautiful, coiled shells that spiral like a ram's horn. Ammonites are part of the cephalopod family, which today includes octopuses, squid, and cuttlefish. They looked a bit like modern nautiluses, but they are not the same.

These amazing creatures first appeared about 410 million years ago during a time called the Devonian period. They lived in oceans all around the world for many millions of years. Sadly, ammonites are no longer alive today. They disappeared around 66 million years ago, during a big change in Earth's history.

Why We Love Them

Even though ammonites are gone, we can still learn about them because their shells often become fossils. These fossils help scientists understand what the Earth was like long ago. Ammonites came in many shapes and sizes. Most had shells that coiled in a flat spiral, but some had very unusual shapes.

People have admired ammonites for centuries. In old times, some thought these fossils looked like snakes and called them "snakestones." Today, scientists study them to learn more about ancient oceans and the creatures that lived there. Ammonites remind us of the wonderful diversity of life that has existed on our planet.