Species: † Paronychodon caperatus (Marsh, 1890) - family Troodontidae - Theropod Dinosaur Age: Late Cretaceous, Maastrichtian stage, (~69-66 Million Years) Location: Private Ranch in Wyoming, USA Formation: Lance (Creek) Formation Size: 10 mm • 0.39 in Weight: 1 g • 0.04 oz Ref. S70 DESCRIPTION: Paronychodon is a genus of theropod dinosaur known from isolated, ridged teeth that are commonly found in the Late Cretaceous Lance Formation, although no skeletal remains have ever been discovered. The teeth are small, conical or flattened on one side , and often have longitudinal ridges, but because they are so distinctive and unique, their exact identity is a mystery and they could be from a variety of small theropods like troodontids, deinonychosaurs, or even a pterosaur. The Lance Formation is a rock unit in Wyoming that dates to the end of the Cretaceous period, approximately 66 million years ago. Paronychodon and the Lance Formation: Unidentified Identity: Paronychodon is a genus known only from its teeth, which are a common fossil in many Late Cretaceous formations, including the Lance Formation. No complete skeletons have ever been found, so the exact animal that produced these teeth remains unknown. Fossil Teeth: The teeth are characterized by being small, conical, and possessing longitudinal ridges along the crown. Some teeth assigned to Paronychodon have been found to have a flattened side or were otherwise different in morphology, leading some to question if they are all from the same animal. Possible Candidates: Because of the lack of skeletal remains, the teeth have been attributed to a variety of creatures, including: -Troodontids -Deinonychosaurs -Alvarezsaurids -Even pterosaurs Lance Formation: The Lance Formation is a rock unit in Wyoming that is famous for preserving some of the last dinosaurs to exist before the K-Pg mass extinction event. It contains a wealth of fossils from a diverse ecosystem that included species like Tyrannosaurus and Triceratops. All of our fossils come with a Certificate of Authenticity. Every week, the issued Certificates of Authenticity are updated in our database verification system on our website. If you find that your certificate has not yet been updated, please contact us and we will update it immediately. Display box included. IMPORTANT SHIPPING INFORMATION: Our company is based in the USA, but our headquarters and products are located in Europe. Therefore, ALL PRODUCTS WILL BE SHIPPED FROM EUROPE. Consequently, any European customer will receive their shipment without any import charges, as it will be an intra-community shipment. For customers in the USA: Shipments will be made via UPS from Europe, and in this case, we will be responsible for any import charges. These will be paid online by us before the package arrives. Therefore, US customers will not pay any import fees. For the rest of the world: We are not responsible for any import charges applicable to the destination country.