Description

• Small- Approx. 2.75″ across
• Medium- Approx. 3.00″ across
• Large- Approx. 3.25+” across

*Each piece is chosen randomly

Learn About Goniatite Fossils

Goniatites are an extinct group of marine cephalopods that lived from the Devonian to the Permian periods, roughly 400 to 250 million years ago. Like their more famous relatives, the ammonites, goniatites had coiled, chambered shells and thrived in ancient oceans. The key distinction between goniatites and ammonites lies in the structure of their shell sutures—the lines where the chamber walls meet the outer shell. Goniatites display relatively simple, zigzag or gently curved suture patterns, while ammonites possess more complex, highly frilled or lobed sutures. This difference is not just aesthetic; it reflects evolutionary changes in shell strength and buoyancy control. Goniatite fossils are often found in limestone and shale deposits, with beautifully preserved spiral shells that make them popular among collectors. Their simpler suture patterns and generally older age set them apart from the often more ornate and younger ammonites, offering a unique glimpse into early marine life.

If you love our goniatite fossils, check out our full line of fossils here.

Please Note:

1. Sizes and weights are approximate. Dimension sizes can vary based on the way the rock is formed. We hand measure our pieces on the longest side. Please see the pictures in the listing.
2. The colors may vary due to monitor and lighting differences.
3. Please use your own judgment when allowing children to handle.
4. Not suggested for use in animal habitats or fish tanks.