sentences:  Though Seeley did not designate a holotype specimen for "O. latidens", he described and illustrated parts of NHMUK R176, which makes the 1901 naming valid according to the International Commission on Zoological Nomenclature, and the specimen is considered the holotype today.Later researchers have been mystified by the fact that Seeley described the jaws and teeth of "O. latidens" and named it after the latter, when the only specimen available in 1901, NHMUK R176, does not appear to have had these elements.Only the back of the skull was listed as present by Lydekker in 1888, but it was rumoured that a set of jaws had been lost from Fox's collection, so it is possible that Seeley had examined them prior to this.