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Hindeodus Apparatus Hypotheses
''Hindeodus'' is an extinct genus of conodonts in the family Anchignathodontidae. The generic name ''Hindeodus'' is a tribute to George Jennings Hinde, a British geologist and paleontologist from the 1800s and early 1900s. The suffix -odus typically describe's the animal's teeth, essentially making ''Hindeodus'' mean Hinde-teeth. Conodonts such as ''Hindeodus'' are typically small, elongate, marine animals that look similar to eels today. ''Hindeodus'' existed from the early Carboniferous through the early Triassic during which they inhabited a wide variety of different environments in the Paleozoic and Triassic seas.Sweet WC. 1998. The Conodonta : Morphology, Taxonomy, Paleoecology, and Evolutionary History of a Long-Extinct Animal Phylum. New York: Clarendon Press Their body consisted entirely of soft tissues, except for an assortment of phosphatic elements believed to be their feeding apparatus. Despite years of controversy regarding their phylogenetic position, conodonts s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hindeodus Apparatus Hypotheses
''Hindeodus'' is an extinct genus of conodonts in the family Anchignathodontidae. The generic name ''Hindeodus'' is a tribute to George Jennings Hinde, a British geologist and paleontologist from the 1800s and early 1900s. The suffix -odus typically describe's the animal's teeth, essentially making ''Hindeodus'' mean Hinde-teeth. Conodonts such as ''Hindeodus'' are typically small, elongate, marine animals that look similar to eels today. ''Hindeodus'' existed from the early Carboniferous through the early Triassic during which they inhabited a wide variety of different environments in the Paleozoic and Triassic seas.Sweet WC. 1998. The Conodonta : Morphology, Taxonomy, Paleoecology, and Evolutionary History of a Long-Extinct Animal Phylum. New York: Clarendon Press Their body consisted entirely of soft tissues, except for an assortment of phosphatic elements believed to be their feeding apparatus. Despite years of controversy regarding their phylogenetic position, conodonts s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Early Carboniferous
Early may refer to: History * The beginning or oldest part of a defined historical period, as opposed to middle or late periods, e.g.: ** Early Christianity ** Early modern Europe Places in the United States * Early, Iowa * Early, Texas * Early Branch, a stream in Missouri * Early County, Georgia Other uses * Early (Scritti Politti album), ''Early'' (Scritti Politti album), 2005 * Early (A Certain Ratio album), ''Early'' (A Certain Ratio album), 2002 * Early (name) * Early effect, an effect in transistor physics * Early Records, a record label * the early part of the morning See also * Earley (other) {{disambiguation, geo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 of sedimentary rock, 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 (geologist), William Smith in the 1790s and early 19th century. Known as the "Father of English geology", Smith recognized the significance of Stratum, strata or rock layering and the importance ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bactrognathidae
Bactrognathidae is an extinct family of conodonts in the order Prioniodinida. Genera are '' Bactrognathus'', '' Doliognathus'', and '' Staurognathus''. References External links Bactrognathidaeat fossilworks Fossilworks is a portal which provides query, download, and analysis tools to facilitate access to the Paleobiology Database The Paleobiology Database is an online resource for information on the distribution and classification of fossil animals ....org (retrieved 22 April 2016) Conodont families Prioniodinida {{Conodont-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Balognathidae
Balognathidae is an extinct conodont family. Genera Genera are: * †'' Amorphognathus'' * †'' Baltoniodus'' * †'' Birksfeldia'' * †'' Icriodella'' * †'' Notiodella'' * †'' Polyplacognathus'' * †'' Prioniodus'' * †''Promissum'' * †''Pterospathodus'' References External links Balognatidaeat fossilworks Fossilworks is a portal which provides query, download, and analysis tools to facilitate access to the Paleobiology Database The Paleobiology Database is an online resource for information on the distribution and classification of fossil animals ....org (retrieved 8 May 2016) Conodont families Prioniodontida {{conodont-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paracordylodus
''Paracordylodus'' is an extinct genus of conodonts in the clade Prioniodontida, also known as the "complex conodonts". The species ''P. gracilis'' has been recovered from the chert of the Narooma Terrane, a geological structural region on the south coast of New South Wales ) , nickname = , image_map = New South Wales in Australia.svg , map_caption = Location of New South Wales in AustraliaCoordinates: , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , es ..., Australia. References External links * ''Paracordylodus''at fossilworks.org (retrieved 11 May 2016) Prioniodontida genera Ordovician conodonts Early Ordovician animals Fossil taxa described in 1971 {{conodont-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Changhsingian
In the geologic time scale, the Changhsingian or Changxingian is the latest age or uppermost stage of the Permian. It is also the upper or latest of two subdivisions of the Lopingian Epoch or Series. The Changhsingian lasted from to 251.902 million years ago (Ma). It was preceded by the Wuchiapingian and followed by the Induan. The greatest mass extinction in the Phanerozoic eon, the Permian–Triassic extinction event, occurred during this age. The extinction rate peaked about a million years before the end of this stage. Stratigraphic definitions The Changhsingian is named after Changxing () in northern Zhejiang, China. The stage was named for the Changhsing Limestone. The name was first used for a stage in 1970; 1973: ''Permian stages names'', in: : ''The Permian and Triassic systems and their mutual boundary'', Canadian Society of Petroleum Geologists Memoir 2, pp 522–548. and was anchored in the international timescale in 1981.; 2006: ''The Global Boundary Stratotype Sect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ozarkodina
''Ozarkodina'' is an extinct genus of conodonts in the family Spathognathodontidae. Use in stratigraphy ''Ozarkodina snajdri'' forms a subdivision of the '' Pseudomonoclimacis'' latilobus graptolite zone in the Burgsvik beds Silurian formation in Sweden. An ''Ozarkodina snajdri crispa'' zone has also been identified in the Wills Creek in Virginia. ''Ozarkodina derenjalensis'' is found in the Silurian of the Niur Formation in Iran.A new early Silurian prioniodontid conodont with three P elements from Iran and associated species. Peep Männik, C. Giles Miller and Vachik Hairapetian, Acta Palaeontologica Polonica, 2015, volume 60, issue 3, pages 733–746, The Kellwasser event in the Devonian which saw the extinction of all ''Ozarkodina'' species is reported in the list of Global Boundary Stratotype Sections and Points. References External links ''Ozarkodina''at fossilworks Fossilworks is a portal which provides query, download, and analysis tools to facilitate ac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lamprey
Lampreys (sometimes inaccurately called lamprey eels) are an ancient extant lineage of jawless fish of the order Petromyzontiformes , placed in the superclass Cyclostomata. The adult lamprey may be characterized by a toothed, funnel-like sucking mouth. The common name "lamprey" is probably derived from Latin , which may mean "stone licker" ( "to lick" + "stone"), though the etymology is uncertain. ''Lamprey'' is sometimes seen for the plural form. There are about 38 known extant species of lampreys and five known extinct species. Parasitic carnivorous species are the most well-known, and feed by boring into the flesh of other fish to suck their blood; but only 18 species of lampreys engage in this micropredatory lifestyle. Of the 18 carnivorous species, nine migrate from saltwater to freshwater to breed (some of them also have freshwater populations), and nine live exclusively in freshwater. All non-carnivorous forms are freshwater species. Adults of the non-carnivorous ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hagfish
Hagfish, of the class Myxini (also known as Hyperotreti) and order Myxiniformes , are eel-shaped, slime-producing marine fish (occasionally called slime eels). They are the only known living animals that have a skull but no vertebral column, although hagfish do have rudimentary vertebrae. Along with lampreys, hagfish are jawless; the two form the sister group to jawed vertebrates, and living hagfish remain similar to hagfish from around 300 million years ago. The classification of hagfish had been controversial. The issue was whether the hagfish was a degenerate type of vertebrate-fish that through evolution had lost its vertebrae (the original scheme) and was most closely related to lampreys, or whether hagfish represent a stage that precedes the evolution of the vertebral column (the alternative scheme) as is the case with lancelets. Recent DNA evidence has supported the original scheme. The original scheme groups hagfish and lampreys together as cyclostomes (or historicall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
