Ruler and/or coin included in photos for sizing only
Cleaned, Unpolished Fossils
Sourced from Michigan
Horn coral fossils are the ancient remains of corals that belonged to the order Rugosa, which lived from the Ordovician to the Permian periods, about 488 to 251 million years ago. These corals are named for their horn-like shape. They typically have a long, conical form, and their structure shows a clear, radial symmetry. Horn corals were part of the coral reef communities in ancient oceans. They were marine animals, similar to modern-day corals, but unlike many modern species, they were solitary, living individually rather than in large colonies. The fossilized remains of horn corals are often found in sedimentary rock layers. When these corals died, their organic material was replaced over time by minerals, preserving their shape and internal structures as fossils. These fossils provide valuable insights into ancient marine environments and are sought after by collectors and researchers for their scientific and aesthetic value.