1823 Copper engraving of a modern hyena (top) and British hyena jawbones (below) from Kirkdale cave (below) with an actual cave hyena (Crocuta crocuta spelaea) fossil jawbone resting on the page. Drawn by Webster, Clift and Morland, printed by Basire. In William Buckland's \Reliquiae Diluvianae or Observations on the Organic Remains contained in Caves, Fissures, and Diluvial Gravel, and on the Geological Phenomena Attesting the Action of an Universal Deluge\". John Murray, 1823. Buckland discovered many extinct British species of mammal during his pioneering work on cave deposits but was most associated with cave hyenas. His work was cutting-edge, but still lay in the framework of a Biblical flood. He believed many of the fossils he was collecting had been saved from the flood by the dens of prehistoric hyenas. The eccentric Buckland even owned a tame hyena to test their effect on bones."