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Thunder Bay Limestone
The Thunder Bay Limestone is a geologic formation in Michigan. It preserves fossils dating back to the Devonian period. Fossil content Vertebrates Conodonts Placoderms Invertebrates Brachiopods Cnidarians Echinoderms Trilobites See also * List of fossiliferous stratigraphic units in Michigan This article contains a list of fossil-bearing stratigraphic units in the state of Michigan, U.S. Sites See also * Paleontology in Michigan References * {{DEFAULTSORT:Fossiliferous stratigraphic units in Michigan Michigan Stratigraphi ... References * Devonian Michigan Middle Devonian Series {{Michigan-geologic-formation-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geological Formation
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 Wer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ferron Point Formation
The Ferron Point Formation is a geologic formation in Michigan. It preserves fossils dating back to the Devonian The Devonian ( ) is a geologic period and system of the Paleozoic era, spanning 60.3 million years from the end of the Silurian, million years ago (Mya), to the beginning of the Carboniferous, Mya. It is named after Devon, England, whe ... period. References * Devonian Michigan Middle Devonian Series {{Michigan-geologic-formation-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alpena, Michigan
Alpena ( ') is the only city in and county seat of Alpena County in the U.S. state of Michigan. The population was 10,483 at the 2010 census. After Traverse City, it is the second most populated city in the Northern Michigan region. The city is surrounded by Alpena Township, but the two are administered autonomously. It is the core city of the Alpena micropolitan statistical area, which encompasses all of Alpena County and had a total population of 28,360 at the 2010 census. Located at Thunder Bay along the shores of Lake Huron, the Thunder Bay National Marine Sanctuary is located in the city. The population swells with many visitors and tourists during the summer months. MidMichigan Health, which is a federally-designated rural regional medical referral center, is the largest employer in the city. History It was originally part of Anomickee County founded in 1840, which in 1843 was changed to Alpena, a pseudo-Native American word — a neologism coined by Henry Schoolc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ptyctodus
''Ptyctodus'' is an extinct armour-plated fish of the late Devonian. ''Ptyctodus'' belongs to the family Ptyctodontidae and is of the class Placodermi. They share a close resemblance to modern day chimaeras (Holocephali). Fossils of this armour-plated fish have been found in locations such as in Russia, the Michigan Basis, and Arizona, United States. Description and paleobiology ''Ptyctodus'' species come in a variety of different sizes, measured data shows three specimens being 94 millimeters, 24 millimeters, 22 millimeters in length, 23 millimeters, 6 millimeters, 4 millimeter in height, and 18 millimeters, 7 millimeters, and 4 millimeters in thickness. Through time, an evolutionary morphological trait is that the species within Ptyctodontidae reduce the dermal armour. The dentition of the ''Ptyctodus'' has dental elements that are very similarly observed in ''chimaeroids''. Its dental plates are compressed into a thin cutting edge behind the symphysis and measure 3 inches ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polygnathus
''Polygnathus'' is an extinct genus of conodonts. Species * †''Polygnathus acrinodosus'' Aboussalam 2003 * †''Polygnathus alkhovikovae'' Baranov, Slavík & Blodgett 2014 * †''Polygnathus angustipennatus'' Bischoff and Ziegler 1957 * †''Polygnathus aragonensis'' Martínez-Pérez & Valenzuela-Ríos 2014 * †''Polygnathus arthuri'' Baranov, Slavík & Blodgett 2014 * †''Polygnathus bardashevi'' Baranov, Slavík & Blodgett 2014 * †''Polygnathus bicristatus'' Mossoni et al. 2015 * †''Polygnathus burretti'' Savage 2013 * †''Polygnathus chongqingensis'' Wang in Gong et al. 2012 * †''Polygnathus carlsi'' Martínez-Pérez & Valenzuela-Ríos 2014 * †''Polygnathus communis'' ** †''Polygnathus communis hanensis'' Savage 2013 ** †''Polygnathus communis longanensis'' Qie et al. 2014 ** †''Polygnathus communis namdipensis'' Savage 2013 ** †''Polygnathus communis phaphaensis'' Savage 2013 * †''Polygnathus costatus'' Klapper 1971 ** †''Polygnathus costatus part ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Four Mile Dam Formation
The Four Mile Dam Formation, also called the Four Mile Dam Limestone, is a Formation (geology), geologic formation in Michigan. It preserves fossils dating back to the middle Devonian Period (geology), period. Fossil content Vertebrates Acanthodians Conodonts Placoderms Invertebrates Brachiopods Corals Gastropods Sponges Trilobites See also * List of fossiliferous stratigraphic units in Michigan References * Devonian Michigan Devonian southern paleotemperate deposits {{Michigan-geologic-formation-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Newton Creek Limestone
Newton most commonly refers to: * Isaac Newton (1642–1726/1727), English scientist * Newton (unit), SI unit of force named after Isaac Newton Newton may also refer to: Arts and entertainment * ''Newton'' (film), a 2017 Indian film * Newton (band), Spanish electronic music group * ''Newton'' (Blake), a print by William Blake * ''Newton'' (Paolozzi), a 1995 bronze sculpture by Eduardo Paolozzi * Cecil Newton (''Coronation Street''), a character in the British soap opera ''Coronation Street'' * Curtis Newton, "real" name of pulp magazine character Captain Future * George Newton, a character in the film series '' Beethoven'' * Newton Gearloose, a Disney character, nephew of Gyro Gearloose * Newton, a character in '' The Mighty Hercules'' animated series People * Newton (surname), including a list of people with the surname * Newton (given name), including a list of people with the given name Places Australia * Newton, South Australia Canada * Newton, Edmonton, Alberta * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bell Shale
The Bell Shale is a geologic formation in Michigan. It preserves fossils dating back to the Devonian The Devonian ( ) is a geologic period and system of the Paleozoic era, spanning 60.3 million years from the end of the Silurian, million years ago (Mya), to the beginning of the Carboniferous, Mya. It is named after Devon, England, whe ... period. References * Devonian Michigan Middle Devonian Series {{Michigan-geologic-formation-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dundee Limestone
The Dundee Limestone is a geologic formation in Michigan, Ohio and Ontario. It preserves fossils dating back to the Devonian period. See also * List of fossiliferous stratigraphic units in Ohio This article contains a list of fossil-bearing stratigraphic units in the state of Ohio, Ohio, U.S. Sites See also * Paleontology in Ohio References * {{DEFAULTSORT:Fossiliferous stratigraphic units in Ohio Fossiliferous stratigrap ... References * Devonian Ohio Devonian southern paleotemperate deposits Devonian southern paleotropical deposits Middle Devonian Series {{Ohio-geologic-formation-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anderdon Limestone
The Anderdon Limestone is a geologic formation in Michigan. It preserves fossils dating back to the Devonian period Period may refer to: Common uses * Era, a length or span of time * Full stop (or period), a punctuation mark Arts, entertainment, and media * Period (music), a concept in musical composition * Periodic sentence (or rhetorical period), a concept .... References * Devonian Michigan {{Michigan-geologic-formation-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lucas Dolomite
The Lucas Formation is a Formation (geology), geologic formation in Michigan. It preserves fossils dating back to the Devonian Period (geology), period. Fossil content References * Devonian Michigan Devonian Ohio Devonian southern paleotemperate deposits {{Michigan-geologic-formation-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
