|
Euthynotus Incognitus
''Euthynotus'' is an extinct genus of prehistoric marine Actinopterygii, ray-finned fish that lived in Europe during the Early Jurassic epoch. It is generally considered the basalmost Pachycormiformes, pachycormiform. It contains only a single definitive species, ''E. incognitus'' (Henri Marie Ducrotay de Blainville, de Blainville, 1818) (=''Esox incognitus'' de Blainville, 1818), known from well-preserved specimens from the Toarcian-aged Posidonia Shale of Germany.Three other species also placed in this genus by Arthur Smith Woodward, Woodward (1901), include ''E. intermedius'' Louis Agassiz, Agassiz, 1844, ''E. speciosus'' Johann Andreas Wagner, Wagner, 1860 and ''E. milloti'' (Henri Émile Sauvage, Sauvage, 1891). However, Mainwaring (1978) found these species to all be fragmentary and most likely misattributed to this genus, with ''E. intermedius'' being lost and most likely a specimen of ''Pachycormus (fish), Pachycormus'', ''E. milloti'' to be a member of ''Sauropsis'', and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toarcian
The Toarcian is, in the International Commission on Stratigraphy, ICS' geologic timescale, an age (geology), age and stage (stratigraphy), stage in the Early Jurassic, Early or Lower Jurassic. It spans the time between 184.2 Megaannum, Ma (million years ago) and 174.7 ±0.8 Ma. It follows the Pliensbachian and is followed by the Aalenian. The Toarcian Age began with the Toarcian Oceanic Anoxic Event, a major anoxic event associated with marine extinctions and increased global temperatures that sets its fossil faunas apart from the previous Pliensbachian age. It is believed to have ended with a global cooling event known as the Comptum Cooling Event, although whether it represented a worldwide event is controversial. Stratigraphic definitions The Toarcian takes its name from the city of Thouars, just south of Saumur in the Loire Valley of France. The stage was introduced by French palaeontologist Alcide d'Orbigny in 1842, after examining stratum, rock strata of this age in a quar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johann Andreas Wagner
Johann Andreas Wagner (21 March 1797 – 17 December 1861) was a German palaeontologist, zoologist and archaeologist who wrote several important works on palaeontology. He was also a pioneer of biogeographical theory. Career Wagner was born in Nuremberg and received a PhD from the University of Erlangen in 1826 after spending some time in the University of Wurzburg (1814-16). He worked as a privatdozent at Erlangen after a tour that included a visit to Paris. In 1832 he became an adjunct to Gotthilf Heinrich von Schubert at the Munich zoological collection. In 1835 he was elected to the Bavarian Academy of Sciences and Humanities, Royal Bavarian Academy of Science. In 1845 he organized a survey of the distributions of 44 vertebrates (16 mammals, 27 birds, 1 reptile) across the districts of Bavaria under auspices of the Kingdom of Bavaria. In 1849 he was made third curator for the zoological collections. He was the author of ''Die Geographische Verbreitung der Säugethiere Da ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toarcian Genera
The Toarcian is, in the ICS' geologic timescale, an age and stage in the Early or Lower Jurassic. It spans the time between 184.2 Ma (million years ago) and 174.7 ±0.8 Ma. It follows the Pliensbachian and is followed by the Aalenian. The Toarcian Age began with the Toarcian Oceanic Anoxic Event, a major anoxic event associated with marine extinctions and increased global temperatures that sets its fossil faunas apart from the previous Pliensbachian age. It is believed to have ended with a global cooling event known as the Comptum Cooling Event, although whether it represented a worldwide event is controversial. Stratigraphic definitions The Toarcian takes its name from the city of Thouars, just south of Saumur in the Loire Valley of France. The stage was introduced by French palaeontologist Alcide d'Orbigny in 1842, after examining rock strata of this age in a quarry near Thouars. In Europe this period is represented by the upper part of the Lias. The base of the Toarcian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jurassic Fish Of Europe
The Jurassic ( ) is a geologic period and stratigraphic system that spanned from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period, approximately 143.1 Mya. The Jurassic constitutes the second and middle period of the Mesozoic Era as well as the eighth period of the Phanerozoic Eon and is named after the Jura Mountains, where limestone strata from the period were first identified. The start of the Jurassic was marked by the major Triassic–Jurassic extinction event, associated with the eruption of the Central Atlantic Magmatic Province (CAMP). The beginning of the Toarcian Age started around 183 million years ago and is marked by the Toarcian Oceanic Anoxic Event, a global episode of oceanic anoxia, ocean acidification, and elevated global temperatures associated with extinctions, likely caused by the eruption of the Karoo-Ferrar large igneous provinces. The end of the Jurassic, however, has no clear, definitive boundary with the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Early Jurassic Fish
Early may refer to: Places in the United States * Early, Iowa, a city * Early, Texas, a city * Early Branch, a stream in Missouri * Early County, Georgia * Fort Early, Georgia, an early 19th century fort Music * Early B, stage name of Jamaican dancehall and reggae deejay Earlando Arrington Neil (1957–1994) * Early James, stage name of American singer-songwriter Fredrick Mullis Jr. (born 1993) * ''Early'' (Scritti Politti album), 2005 * ''Early'' (A Certain Ratio album), 2002 * Early Records, a record label Other uses * Early (name), a list of people and fictional characters with the given name or surname * Early effect, an effect in transistor physics * Early, a synonym for ''hotter'' in stellar classification See also * * The Earlies, a 21st century band * Earley (other) * Earlie Earlie is a masculine given name which may refer to: * Earlie Fires (born 1947), American jockey * Earlie Thomas (1945–2022), American National Football League player * Earlie End ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monotypic Prehistoric Ray-finned Fish Genera
In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispecific" or "monospecific" is sometimes preferred. In botanical nomenclature, a monotypic genus is a genus in the special case where a genus and a single species are simultaneously described. Theoretical implications Monotypic taxa present several important theoretical challenges in biological classification. One key issue is known as "Gregg's Paradox": if a single species is the only member of multiple hierarchical levels (for example, being the only species in its genus, which is the only genus in its family), then each level needs a distinct definition to maintain logical structure. Otherwise, the different taxonomic ranks become effectively identical, which creates problems for organizing biological diversity in a hierarchical system. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Prehistoric Bony Fish
This list of prehistoric bony fish is an attempt to create a comprehensive listing of all Genus, genera from the fossil record that have ever been considered to be bony fish (class Osteichthyes), excluding purely vernacular terms. The list includes all commonly accepted genera, but also genera that are now considered invalid, doubtful (''nomen dubium, nomina dubia''), or were not formally published (''nomen nudum, nomina nuda''), as well as synonym (zoology), junior synonyms of more established names, and genera that are no longer considered members of osteichthyes. This list includes 1,387 generic names. *extinction, Extinct genera are marked with a dagger (†). *Extant taxon, Extant genera are bolded. Naming conventions and terminology Naming conventions and terminology follow the International Code of Zoological Nomenclature. Technical terms used include: * Synonym (zoology), Junior synonym: A name which describes the same taxon as a previously published name. If two or more ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prehistoric Fish
__NOTOC__ Prehistoric fish are early fish that are known only from fossil records. They are the earliest known vertebrates, and include the first and extinct fish that lived through the Cambrian to the Quaternary. The study of prehistoric fish is called ''paleoichthyology''. A few living forms, such as the coelacanth are also referred to as prehistoric fish, or even living fossils, due to their current rarity and similarity to extinct forms. Fish which have become recently extinct are not usually referred to as prehistoric fish. Lists of various prehistoric fishes include: * List of prehistoric jawless fish * List of placoderms * List of acanthodians * List of prehistoric cartilaginous fish *List of prehistoric bony fish This list of prehistoric bony fish is an attempt to create a comprehensive listing of all Genus, genera from the fossil record that have ever been considered to be bony fish (class Osteichthyes), excluding purely vernacular terms. The list includ ... * List ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pseudoasthenocormus
''Pseudoasthenocormus'' is an extinct genus of ray-finned fish belonging to the family Pachycormidae. It contains one species, ''P. retrodorsalis''. It lived during the upper Jurassic (Kimmeridgian–Tithonian, about 152–148 million years ago) and its fossil remains have been found in Germany.Eastman, C. R. (1914). Catalog of the fossil fishes in the Carnegie Museum. Memoirs of the Carnegie Museum. Vol. VI. No. 7. Description Large in size, this fish easily exceeded one metre in length. Like many other similar genera, ''Pseudoasthenocormus'' possessed a robust and compact body, although generally more slender than '' Asthenocormus''. As indicated by the specific epithet, the dorsal fin is set back, originating just behind the anal, and is much shorter than the latter. The dorsal fin is composed of a few rays, which decrease in size posteriorly. The anal fin has become independent, with the rays (about 30) starting almost vertically from the haemal arches. The palate was equippe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asthenocormus
''Asthenocormus'' is an extinct genus of large marine pachycormiform ray-finned fish. It contains a single species, ''A. titanius''. A member of the edentulous suspension feeding clade within the Pachycormiformes, fossils have been found in the Upper Jurassic plattenkalks of Bavaria, Germany.'''' See also * Prehistoric fish * List of prehistoric bony fish This list of prehistoric bony fish is an attempt to create a comprehensive listing of all Genus, genera from the fossil record that have ever been considered to be bony fish (class Osteichthyes), excluding purely vernacular terms. The list includ ... References Late Jurassic fish Late Jurassic fish of Europe Pachycormiformes Monotypic prehistoric ray-finned fish genera Solnhofen fauna Tithonian genera Taxa named by Arthur Smith Woodward Fossil taxa described in 1895 {{Jurassic-fish-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sauropsis
''Sauropsis'' (from , 'lizard' and 'looking') is an extinct genus of prehistoric bony fish. See also * List of prehistoric bony fish genera This list of prehistoric bony fish is an attempt to create a comprehensive listing of all Genus, genera from the fossil record that have ever been considered to be bony fish (class Osteichthyes), excluding purely vernacular terms. The list includ ... References External links Bony fish in the online Sepkoski Database Pachycormiformes Taxa named by Louis Agassiz {{Pachycormiformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
