The partial palate of Gyrodus ornatissimus, Kimmeridgian age, Late Jurassic, approximately 152 to 157 million years old. This partial palate came from the Cymodoce Zone of the Kimmeridge Clay Formation, in Weymouth, Dorset. Gyrodus are an extinct species of ray-finned fish which existed during the upper Jurassic through to early Cretaceous periods. These marine fish were durophage feeders meaning they feed on hard shelled or exoskeleton bearing organisms. This incomplete palate is approximately 0.7 mm in size and is supplied in a small plastic bag with an information label.