Butte Formation has yielded surprisingly few identifiable fossils within its Grand Canyon outcrops. These fossils include indeterminate brachiopods, gastropods, corals and placoganoid fish from the walls of lower Kanab Canyon and fish plates identified as Bothriolepis from Sapphire Canyon. Possible cylindrical trace fossils occur in dolomite beds near the base of the Temple Butte at the type section and Tuckup Canyon. Finally, latest Givetian to late Frasnian conodonts have been recovered from the Temple Butte Formation at Matkatamiba Canyon at River Mile 148.4. West of the Grand Canyon, fossils have been recovered from the Temple Butte Formation, where it is also known as the Sultan Limestone. From outcrops that form parts of Iceberg Ridge in Mohave County, Arizona, and the Lake Mead National Recreation Area, rare silicified corals, crinoid plates, gastropods, and massive stromatoporoid colonies have been found in dolomite outcrops of the Temple Butte Formation (Sultan Limestone).<ref name="Spamer1984a">Spamer, E.E., 1984, Paleontology in the Grand Canyon of Arizona: 125 years of lessons and enigmas from the late Precambrian to the present. Mosasaur." (Journal of the Delaware Valley Paleontological Society) 22:45–128.</ref> In addition, the upper of the Temple Butte Formation at Iceberg Ridge contains Famennian conodonts. Finally, farther to the north in Nevada, on South Virgin Peak Ridge, an outcrop of quartz arenite and pinkish-gray sandy dolomite at the base of Temple Butte Formation, has yielded fossil fish plates identified as Holonema, Asterolepis and sarcopterygians of middle Devonian age. See also Geology of the Grand Canyon area References Popular Publications Blakey, R, and W Ranney (2008) Ancient Landscapes of the Colorado Plateau. Grand Canyon Association, Grand Canyon Village, Arizona. 176 pp. Chronic, H (1983) Roadside Geology of Arizona. 23rd printing, Mountain Press Publishing Company, Missoula, Montana. 332 pp. Lucchitta, I (2001) Hiking Arizona's Geology.'' Mountaineers's Books, Seattle Washington. 290 pp. External links Abbot, W, (2001) Revisiting the Grand Canyon – Through the Eyes of Seismic Sequence Stratigraphy. Search and Discovery Article # 40018, America Association of Petroleum Geologists, Tulsa, Oklahoma. Baker, R. G. (1984) Channel filled by Temple Butte Limestone. Iowa Digital Library, University of Iowa, Des Moines, Iowa. Mathis, A., and C. Bowman (2007) The Grand Age of Rocks: The Numeric Ages for Rocks Exposed within Grand Canyon, Grand Canyon National Park, Arizona, National Park Service, Grand Canyon National Park, Arizona. Limestone formations of the United States Natural history of the Grand Canyon Geologic formations of Arizona Devonian Arizona Devonian