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The Black Peaks Formation is a geological formation in Texas whose strata date back to the Late Cretaceous. Dinosaur remains and the pterosaur Quetzalcoatlus northropi have been among the fossils reported from the formation. The boundary with the underlying Javelina Formation has been estimated at about 66.5 million years old. The formation preserves the rays Rhombodus and Dasyatis, as well as many gar scales.
Paleontology in Arizona refers to paleontological research occurring within or conducted by people from the U.S. state of Arizona. The fossil record of Arizona dates to the Precambrian. During the Precambrian, Arizona was home to a shallow sea which was home to jellyfish and stromatolite-forming bacteria. This sea was still in place during the Cambrian period of the Paleozoic era and was home to brachiopods and trilobites, but it withdrew during the Ordovician and Silurian. The sea returned during the Devonian and was home to brachiopods, corals, and fishes. Sea levels began to rise and fall during the Carboniferous, leaving most of the state a richly vegetated coastal plain during the low spells. During the Permian, Arizona was richly vegetated but was submerged by seawater late in the period.
The Hannold Hill Formation is an Early Eocene (Wasatchian) geologic unit in the western United States. It preserves the fossilized remains of the ray Myliobatis and gar.
The Pen Formation is a Campanian-age geologic unit in the western United States.
The Brushy Canyon Formation is a Permian geologic unit in Guadalupe Mountains National Park. The formation contains fan sandstones that were deposited under ancient seawater during the Middle Permian. These rocks contain abundant fish fossils like sharks' teeth preserved within small phosphatic nodules.
The Cabrillo Formation is a Maastrichtian stage geologic formation in coastal San Diego County, southern California. It is part of the Rosario Group. The Maastrichtian stage is of the Late Cretaceous Epoch, during the Mesozoic Era.
The Titus Canyon Formation is an Eocene geologic formation in California. H. Donald Curry collected the type specimens of the three teleosts Fundulus curryi, Fundulus euepis, and Cyprinodon breviradius in the Titus Canyon Formation. Both of these genera are present in the Titus Canyon Formation sediments of Death Valley National Park.
The Kishenehn Formation is a Paleogene stratigraphic unit in Montana. Fossil amiiforme and teleost fish have been found in outcrops of the formation's Coal Creek Member in Glacier National Park. Mosquitos have also been found in the Coal Creek Member, and have been found to be hematophagous. It is considered a Middle Eocene Lagerstätte.
The Boone Formation a discrete and definable unit of cherty limestone rock strata located in northwest Arkansas and northeast Oklahoma.
The Bull Run Formation is a Late Triassic (Norian) stratigraphic unit in the eastern United States. Fossil fish bones and scales have been found in outcrops of the formation's Groveton Member in Manassas National Battlefield Park. Indeterminate fossil ornithischian tracks have been reported from the formation.
The Glenns Ferry Formation is a Pliocene stratigraphic unit in the western United States. Outcrops of the formation in Hagerman Fossil Beds National Monument preserve the remains of seven fish species, five of which are extinct. These include the teleosteans Mylopharodon hagermanensis, Sigmopharyngodon idahoensis, and Ptychocheilus oregonensis, Ameirurus vespertinus, and the sunfish Archoplites taylori. A nearly complete skull of the catfish Ameirurus vespertinus was recovered in 2001 from the wall of the Smithsonian Horse Quarry.
The Lost Burro Formation is a Middle to Upper/Late Devonian geologic formation in the Mojave Desert of California in the Western United States.
The Hidden Valley Dolomite is a Silurian−Devonian geologic formation in the northern Mojave Desert of California, in the western United States.
The Fernando Formation is a Pliocene stratigraphic unit in California. Outcrops of the formation in Santa Monica Mountains National Recreation Area have produced fossil shark teeth.
The Mountain Springs Formation is Devonian stratigraphic unit in Arizona. The remains of both antiarch and arthrodire placoderms are known from the formation.
Blieckaspis priscillae is a pteraspidid heterostracan agnathan from the Middle Devonian of North America.
Squatirhina is a genus of Late Cretaceous cartilaginous fish whose fossils have been found in the Aguja and Pen Formations of Big Bend National Park, Texas, USA.
The St. George Dinosaur Discovery Site is a fossil site and museum at Johnson Farm in Saint George, Utah. The museum preserves thousands of dinosaur footprints right at the original site of discovery.
Burrow fossils are the remains of burrows - holes or tunnels excavated into the ground or seafloor - by animals to create a space suitable for habitation, temporary refuge, or as a byproduct of locomotion preserved in the rock record. Because burrow fossils represent the preserved byproducts of behavior rather than physical remains, they are considered a kind of trace fossil. One common kind of burrow fossil is known as Skolithos, and the similar Trypanites, Ophiomorpha and Diplocraterion.
ReBecca Hunt-Foster is an American paleontologist. She has worked with dinosaur remains from the Late Jurassic to Late Cretaceous of the Colorado Plateau, Rocky Mountains, Southcentral, and the Southwestern United States of America. She described the dinosaur Arkansaurus fridayi and identified the first juvenile Torosaurus occurrences from Big Bend National Park in North America in 2008.
References
- Hunt, ReBecca K., Vincent L. Santucci and Jason Kenworthy. 2006. "A preliminary inventory of fossil fish from National Park Service units." in S.G. Lucas, J.A. Spielmann, P.M. Hester, J.P. Kenworthy, and V.L. Santucci (ed.s), Fossils from Federal Lands. New Mexico Museum of Natural History and Science Bulletin 34, pp. 63–69.