This listing features a rare and well-preserved fossil mayfly larvae, Ephemeropsis trisetalis, from the renowned Jianshangou Beds of the Yixian Formation, dating to the Early Cretaceous Period (~125 million years ago). This remarkable specimen was discovered in Beipiao, Liaoning Province, China, a world-famous fossil site known for its exceptional preservation of prehistoric life.
✔ Rare and highly sought-after fossil insect larvae from the Cretaceous
✔ From the famous Yixian Formation, home to some of the best-preserved fossils
✔ Exceptional preservation – detailed body structure visible
✔ Ideal for collectors, researchers, and fossil enthusiasts
✔ Comes with a Certificate of Authenticity
Ephemeropsis trisetalis is an extinct species of mayfly that lived in freshwater environments during the Early Cretaceous Period. Mayflies are known for their delicate, short-lived adult stage and their aquatic juvenile phase. This fossil represents a larval stage, which is particularly significant for paleontologists studying the evolution of ancient aquatic ecosystems. The Yixian Formation is well-known for preserving not only insects but also early birds, feathered dinosaurs, and plants, offering a glimpse into an ancient ecosystem from over 125 million years ago.
All of our fossils are 100% genuine specimens and come with a Certificate of Authenticity. The exact fossil shown in the listing photos is the one you will receive.
This fossil originates from the Alice Purnell Collection, one of the largest and most prestigious fossil collections in the world. We specialize in museum-quality fossils, carefully sourced to ensure authenticity, rarity, and scientific value.
A must-have addition to any fossil collection – own a piece of Cretaceous insect history!