Coral, Graptolite and Sponge Fossils

Coral, Graptolite and Sponge Fossils

Coral, graptolite, and sponge fossils are key indicators of ancient marine environments, offering vital clues to Earth’s geological and evolutionary past. Fossil corals, including both rugose and tabulate types, reveal the structure of prehistoric reefs and are often beautifully preserved in limestone. Graptolites, now extinct, were colonial marine organisms that lived in the Paleozoic era and are especially important for dating rock layers due to their widespread distribution and rapid evolution. Fossil sponges, some dating back over 500 million years, display the simple but enduring structure of early multicellular life. These fossils are highly valued in paleontology for reconstructing ancient ecosystems and are popular among collectors for their diversity, detail, and historical significance.