Percoid fish preopercular spine collected from the Eocene Bracklesham Beds in Lee on Solent, Hampshire. The Percoids are a suborder of the order Perciformes; perches, snappers, basses, whitings and many more fish belong to this suborder. The preopercular spine is a spiny projection on the preoperculum (a bone between the cheek and gill cover). This specimen measures approximately 9 mm in length and is supplied in a small plastic bag with an information label. The Bracklesham beds in which these bones were found are well known among paleontologists and fossil collectors in Britain; they have yielded over 160 different species of fish and the beds continue to be productive today despite having been pillaged by collectors for over 100 years.