Lists Of Fossiliferous Stratigraphic Units In The United States

	Lists Of Fossiliferous Stratigraphic Units In The United States Select a region on the graphical atlas to view a list of the fossiliferous stratigraphic units in that area of the United States. Graphical atlas See also * Paleontology in the United States * Lists of fossiliferous stratigraphic units in North America * Lists of fossiliferous stratigraphic units Notes References {{DEFAULTSORT:Fossiliferous stratigraphic units in the United States Fossiliferous Stratigraphy of the United States United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ... ... [...More Info...] [...Related Items...] OR:* [Wikipedia] [Google] [Baidu]
picture info	Fossiliferous A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved in amber, hair, petrified wood and DNA remnants. The totality of fossils is known as the ''fossil record''. Paleontology is the study of fossils: their age, method of formation, and evolutionary significance. Specimens are usually considered to be fossils if they are over 10,000 years old. The oldest fossils are around 3.48 billion years old to 4.1 billion years old. Early edition, published online before print. The observation in the 19th century that certain fossils were associated with certain rock strata led to the recognition of a geological timescale and the relative ages of different fossils. The development of radiometric dating techniques in the early 20th century allowed scientists to quantitatively measure the absolute ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Stratigraphic Stratigraphy is a branch of geology concerned with the study of rock layers (strata) and layering (stratification). It is primarily used in the study of sedimentary and layered volcanic rocks. Stratigraphy has three related subfields: lithostratigraphy (lithologic stratigraphy), biostratigraphy (biologic stratigraphy), and chronostratigraphy (stratigraphy by age). Historical development Catholic priest Nicholas Steno established the theoretical basis for stratigraphy when he introduced the law of superposition, the principle of original horizontality and the principle of lateral continuity in a 1669 work on the fossilization of organic remains in layers of sediment. The first practical large-scale application of stratigraphy was by William Smith in the 1790s and early 19th century. Known as the "Father of English geology", Smith recognized the significance of strata or rock layering and the importance of fossil markers for correlating strata; he created the first geologic map o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Paleontology In The United States Paleontology in the United States refers to paleontological research occurring within or conducted by people from the United States. Paleontologists have found that at the start of the Paleozoic era, what is now "North" America was actually in the southern hemisphere. Marine life flourished in the country's many seas. Later the seas were largely replaced by swamps, home to amphibians and early reptiles. When the continents had assembled into Pangaea drier conditions prevailed. The evolutionary precursors to mammals dominated the country until a mass extinction event ended their reign. The Mesozoic era followed and the dinosaurs began their rise to dominance, spreading into the country before Pangaea split up. During the latter Jurassic Morrison Formation dinosaurs lived in the western states. During the Cretaceous, the Gulf of Mexico expanded until it split North America in half. Plesiosaurs and mosasaurs swam in its waters. Later it began to withdraw and the western states were ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Lists Of Fossiliferous Stratigraphic Units In North America * Lists of fossiliferous stratigraphic units in Canada * List of fossiliferous stratigraphic units in the Caribbean * List of fossiliferous stratigraphic units in Central America * List of fossiliferous stratigraphic units in Greenland * List of fossiliferous stratigraphic units in Mexico * Lists of fossiliferous stratigraphic units in the United States See also * Lists of fossiliferous stratigraphic units By location * Lists of fossiliferous stratigraphic units in Africa * List of fossiliferous stratigraphic units in Antarctica * Lists of fossiliferous stratigraphic units in Asia * List of fossiliferous stratigraphic units in the Caribbean * Lists ... {{DEFAULTSORT:Fossiliferous stratigraphic units in North America North America geology-related lists Geologic formations of North America ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Lists Of Fossiliferous Stratigraphic Units By location * Lists of fossiliferous stratigraphic units in Africa * List of fossiliferous stratigraphic units in Antarctica * Lists of fossiliferous stratigraphic units in Asia * List of fossiliferous stratigraphic units in the Caribbean * Lists of fossiliferous stratigraphic units in Europe * Lists of fossiliferous stratigraphic units in North America Lists of fossiliferous stratigraphic units in Canada Lists of fossiliferous stratigraphic units in the United States * Lists of * Lists of By preserved taxon * List of dinosaur-bearing stratigraphic units * List of phytosaur-bearing stratigraphic units * List of plesiosaur-bearing stratigraphic units * List of pterosaur-bearing stratigraphic units * List of thalattosuchian-bearing stratigraphic units See also List of fossil sites * Stratigraphy Stratigraphy is a branch of geology concerned with the study of rock (geology), rock layers (Stratum, strata) and layering (stratification). It is primarily used in the study ... [...More Info...] [...Related Items...] OR:* [Wikipedia] [Google] [Baidu]
	Stratigraphy Of The United States Stratigraphy is a branch of geology concerned with the study of rock layers ( strata) and layering (stratification). It is primarily used in the study of sedimentary and layered volcanic rocks. Stratigraphy has three related subfields: lithostratigraphy (lithologic stratigraphy), biostratigraphy (biologic stratigraphy), and chronostratigraphy (stratigraphy by age). Historical development Catholic priest Nicholas Steno established the theoretical basis for stratigraphy when he introduced the law of superposition, the principle of original horizontality and the principle of lateral continuity in a 1669 work on the fossilization of organic remains in layers of sediment. The first practical large-scale application of stratigraphy was by William Smith in the 1790s and early 19th century. Known as the "Father of English geology", Smith recognized the significance of strata or rock layering and the importance of fossil markers for correlating strata; he created the first geologic ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]