The near complete upper dental plate of Edaphodon bucklandi collected from the Eocene Bracklesham Beds in Lee on Solent, Hampshire. Edaphodon is a genus of chimaeroid fish. Today chimaeroid fish reside largely in deep waters and their closest living relative are sharks although they are thought to have branched off from sharks 400 Mya. Chimaeroid fish are cartilaginous meaning their remains are limited to the harder parts of the organism such as the tritors (teeth), jaw plates and fin spines. These upper dental plates measure between 2 and 3 cm in length and are supplied in small plastic bags with an information label.