|
Boggy Formation
The Boggy Formation is a geologic formation in Arkansas and Oklahoma. It preserves fossils dating back to the Carboniferous period. Paleontology *'' Amithorthoceras'' :''A. unicamera'' *'' Arkbuckleoceras'' :''A. tricamerae'' *'' Bitaunioceras'' :''B. buckhornense'' *'' Cyrtorthoracoceras?'' *''Dolorthoceras'' :''D. boggyense'' *'' Pseudorthoceras'' :''P. knoxense'' *'' Sueroceras'' :''S. oklahomense'' *'' Sulphurnites'' :''S. taffi'' *'' Unklesbayoceras'' :''U. striatulum'' See also * List of fossiliferous stratigraphic units in Arkansas * List of fossiliferous stratigraphic units in Oklahoma * Paleontology in Arkansas * Paleontology in Oklahoma Paleontology in Oklahoma refers to paleontological research occurring within or conducted by people from the U.S. state of Oklahoma. Oklahoma has a rich fossil record spanning all three eras of the Phanerozoic Eon. Oklahoma is the best source of P ... References * Carboniferous Arkansas Carboniferous geology of Oklahoma Carb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Formation (stratigraphy)
A geological formation, or simply formation, is a body of rock having a consistent set of physical characteristics (lithology) that distinguishes it from adjacent bodies of rock, and which occupies a particular position in the layers of rock exposed in a geographical region (the stratigraphic column). It is the fundamental unit of lithostratigraphy, the study of strata or rock layers. A formation must be large enough that it can be mapped at the surface or traced in the subsurface. Formations are otherwise not defined by the thickness of their rock strata, which can vary widely. They are usually, but not universally, tabular in form. They may consist of a single lithology (rock type), or of alternating beds of two or more lithologies, or even a heterogeneous mixture of lithologies, so long as this distinguishes them from adjacent bodies of rock. The concept of a geologic formation goes back to the beginnings of modern scientific geology. The term was used by Abraham Gottlob W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carboniferous Arkansas
The Carboniferous ( ) is a geologic period and system of the Paleozoic that spans 60 million years from the end of the Devonian Period million years ago (Mya), to the beginning of the Permian Period, million years ago. The name ''Carboniferous'' means "coal-bearing", from the Latin '' carbō'' ("coal") and '' ferō'' ("bear, carry"), and refers to the many coal beds formed globally during that time. The first of the modern 'system' names, it was coined by geologists William Conybeare and William Phillips in 1822, based on a study of the British rock succession. The Carboniferous is often treated in North America as two geological periods, the earlier Mississippian and the later Pennsylvanian. Terrestrial animal life was well established by the Carboniferous Period. Tetrapods (four limbed vertebrates), which had originated from lobe-finned fish during the preceding Devonian, became pentadactylous in and diversified during the Carboniferous, including early amphibian lineage ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paleontology In Oklahoma
Paleontology in Oklahoma refers to paleontological research occurring within or conducted by people from the U.S. state of Oklahoma. Oklahoma has a rich fossil record spanning all three eras of the Phanerozoic Eon. Oklahoma is the best source of Pennsylvanian fossils in the United States due to having an exceptionally complete geologic record of the epoch. From the Cambrian to the Devonian, all of Oklahoma was covered by a sea that would come to be home to creatures like brachiopods, bryozoans, graptolites and trilobites. During the Carboniferous, an expanse of coastal deltaic swamps formed in areas of the state where early tetrapods would leave behind footprints that would later fossilize. The sea withdrew altogether during the Permian period. Oklahoma was home a variety of insects as well as early amphibians and reptiles. Oklahoma stayed dry for most of the Mesozoic. During the Late Triassic, carnivorous dinosaurs left behind footprints that would later fossilize. During the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paleontology In Arkansas
Paleontology in Arkansas refers to paleontological research occurring within or conducted by people from the U.S. state of Arkansas. The fossil record of Arkansas spans from the Ordovician to the Eocene. Nearly all of the state's fossils have come from ancient invertebrate life. During the early Paleozoic, much of Arkansas was covered by seawater. This sea would come to be home to creatures including ''Archimedes'', brachiopods, and conodonts. This sea would begin its withdrawal during the Carboniferous, and by the Permian the entire state was dry land. Terrestrial conditions continued into the Triassic, but during the Jurassic, another sea encroached into the state's southern half. During the Cretaceous the state was still covered by seawater and home to marine invertebrates such as ''Belemnitella''. On land the state was home to long necked sauropod dinosaurs, who left behind footprints and ostrich dinosaurs such as ''Arkansaurus''. During the Cenozoic the state's seas were in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Fossiliferous Stratigraphic Units In Oklahoma
This article contains a list of fossil-bearing stratigraphic units in the state of Oklahoma, U.S. Sites See also * Paleontology in Oklahoma References * List of Formations in the National Geologic Map Database {{DEFAULTSORT:Fossiliferous stratigraphic units in Oklahoma Oklahoma Stratigraphic units Stratigraphy of Oklahoma Oklahoma geography-related lists United States geology-related lists ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Fossiliferous Stratigraphic Units In Arkansas
This article contains a list of fossil-bearing stratigraphic units in the state of Arkansas, U.S. Sites See also * Paleontology in Arkansas References * {{DEFAULTSORT:Fossiliferous stratigraphic units in Arkansas Arkansas Stratigraphic units A stratigraphic unit is a volume of rock of identifiable origin and relative age range that is defined by the distinctive and dominant, easily mapped and recognizable petrographic, lithologic or paleontologic features (facies) that characterize ... Stratigraphy of Arkansas Arkansas geography-related lists United States geology-related lists ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dolorthoceras
''Dolorthoceras'' is a nautiloid cephalopod from the upper Paleozoic found in Lower Devonian to Lower Permian strata in North America, Europe, Asia, and Australia. The shell is a smooth, gently expanding orthocone with straight transverse to oblique and slightly sinuous sutures. Some are dorso-ventrally flattened so as to be slightly depressed. The hyponomic sinus, through which the funnel projects, appears to be trilobate. The siphuncle begins orthochoanitic (segments straight tubular) and central, becoming cyrtochoanitic (segments inflated) and subcentral with growth. Endosiphuncular deposits tend to grow forward, normally completed annularly at the septal foramina (openings) before fusing ventrally. Cameral deposits are mural, and heavier ventrally and dorsally. ''Dolorthoceras'' is recognized as a pseudorthocerid, nautiloid cephalopods that resemble but are not true orthocerids. It is assigned to the family Spyroceratidae along with such genera as ''Spyroceras'', '' Adn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
