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Acanthodes Bridgei
''Acanthodes'' (from , 'provided with spines') is an extinct genus of acanthodian fish. Species have been found in Europe, North America, and Asia, spanning the Early Carboniferous to the Early Permian, making it one of the youngest known acanthodian genera. Description The largest species of ''Acanthodes'' like ''Acanthodes confusus'' and ''Acanthodes splendidus'' grew to lengths of at least , while some species like ''Acanthodes ultimus'' were much smaller, reaching a total body length of only .Heidtke, U.H.J.Revision der unterpermischen Acanthodier (Acanthodii: Pisces) des südwestdeutschen Saar-Nahe-Beckens evision of the Early Permian acanthodians (Acanthodii : Pisces ) from the southwest german Saar -Nahe Basin ''Mitt. Pollich.'', 2011, no. 95, pp. 15–41. (In German with translation of species descriptions into English) The body was elongate and had a pair of pectoral fins, an unpaired dorsal fin far back on the body, with an unpaired long ventral/pelvic fin and an anal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carboniferous
The Carboniferous ( ) is a Geologic time scale, geologic period and System (stratigraphy), system of the Paleozoic era (geology), era that spans 60 million years, from the end of the Devonian Period Ma (million years ago) to the beginning of the Permian Period, Ma. It is the fifth and penultimate period of the Paleozoic era and the fifth period of the Phanerozoic eon (geology), eon. In North America, the Carboniferous is often treated as two separate geological periods, the earlier Mississippian (geology), Mississippian and the later Pennsylvanian (geology), Pennsylvanian. The name ''Carboniferous'' means "coal-bearing", from the Latin ("coal") and ("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 (geologist), William Conybeare and William Phillips (geologist), William Phillips in 1822, based on a study of the British rock succession. Carboniferous is the per ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glanochthon
''Glanochthon'' is an extinct genus of temnospondyl amphibian from the Early Permian of Germany. Fossils have been found from the Meisenheim Formation in the Saar–Nahe Basin Saar–Nahe Basin is a molasse basin in southwest Germany. The basin is located south of the Hunsrück mountains between the rivers Nahe and the Saar. The aggregation of sediments in the basin started in the late Carboniferous and Early Permi .... References Cisuralian temnospondyls of Europe Fossils of Germany Stereospondylomorpha Prehistoric amphibian genera Fossil taxa described in 2009 {{temnospondyli-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Westrichus
''Westrichus'' is an extinct acanthodian which lived in the Lower Permian of Germany. It contains two species: the type species, ''Westrichus kraetschmeri'', and ''Westrichus tholeyi'', the latter of which was previously assigned to ''Acanthodes''. Description This animal was very similar to the genus ''Acanthodes'', however it was equipped with an extremely elongated pelvic fin; it started behind the head and ended just before the retracted anal fin. The appearance, compared to that of ''Acanthodes'', was therefore much more massive, however, the head was smaller. It had length up to , and like all acanthodians, ''Westrichus'' had large spines on its fins. The dorsal fin was small and pointed backward, and was located near the larger and elongated anal fin. Classification First described in 2003 on the basis of fossils found in the Meisenheim Formation, ''Westrichus'' is considered a very specialised acanthodian. Like many derived representatives of the group, ''Westrichus' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mazon Creek
The Mazon Creek fossil beds are a conservation ' found near Morris, in Grundy County, Illinois. The fossils are preserved in ironstone concretions, formed approximately in the mid- Pennsylvanian epoch of the Carboniferous period. These concretions frequently preserve both hard and soft tissues of animal and plant materials, as well as many soft-bodied organisms that do not normally fossilize. The quality, quantity and diversity of fossils in the area, known since the mid-nineteenth century, make the Mazon Creek ' important to paleontologists attempting to reconstruct the paleoecology of the sites. The locality was declared a National Historic Landmark in 1997.. Geology The Mazon Creek fossils are found in the Upper Carboniferous Francis Creek Shale. The type locality is the Mazon River (or Mazon Creek), a tributary of the Illinois River near Morris, Grundy County, Illinois. The 25 to 30 meters of shale were formed approximately , during the Pennsylvanian period. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mansfield Basin
Mansfield is a market town and the administrative centre of the Mansfield District in Nottinghamshire, England. It is the largest town in the wider Mansfield Urban Area and the second largest settlement in Nottinghamshire (following the city of Nottingham). Henry III granted Mansfield the Royal Charter of a market town in 1227. The town lies in the Maun Valley, north of Nottingham. The district had a population of 110,500 at the 2021 census. Mansfield is the one local authority in Nottinghamshire with a publicly elected mayor, the Mayor of Mansfield. Mansfield in ancient times became the pre-eminent in importance amongst the towns of Sherwood Forest. Etymology According to historian William Horner Dove (1894) there is dispute to the origins of the name. Three conjectures have been considered: the name may have been given to the noble family of Mansfield who came over with William the Conqueror, other sources suggest that the name came from Manson, an Anglo-Saxon word for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Donnersberg Formation
The Donnersberg (; literally: "thunder mountain") is the highest peak of the Palatinate (region), Palatinate () region of Germany. The mountain lies between the towns of Rockenhausen and Kirchheimbolanden, in the Donnersbergkreis district, which is named after the mountain. The highway Bundesautobahn 63, A63 runs along the southern edge of the Donnersberg. European walking route E8 runs across the mountain. The highest point of the Donnersberg is the rock ''Königstuhl'' ("king's seat") at 687 metres above sea level. The mountain has a diameter of about 7 kilometres and covers an area of some 2,400 hectares. The Donnersberg was formed by volcanic activity during the Permian, in the transition period between the lower and upper Rotliegend strata. The name Donnersberg is thought to refer to Thor, Donar, the Germanic god of thunder, a theory supported by the fact that the Roman Empire, Romans dubbed the Donnersberg ''Mons Jovis'' after their god of thunder, Jupiter (mythology), Jup ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bear Gulch Limestone
The Bear Gulch Limestone is a limestone-rich Lens (geology), geological lens in central Montana, renowned for the quality of its marine fossils from the late Mississippian (geology), Mississippian subperiod, about 324 million years ago. It is exposed over a number of outcrops northeast of the Big Snowy Mountains, and is often considered a component of the more widespread Heath Formation. The Bear Gulch Limestone reconstructs a diverse, though isolated, marine ecosystem which developed near the end of the Serpukhovian age in the Carboniferous period. It is a lagerstätte, a particular type of rock unit with exceptional fossil preservation of both articulated skeletons and soft tissues. Bear Gulch fossils include a variety of fish, invertebrates, and algae occupying a number of different habitats within a preserved shallow bay. Fish include a high diversity of unusual Chondrichthyes, chondrichthyans (cartilaginous fish) and one of the oldest known lampreys, along with other vertebrat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Krasnoyarsk Krai
Krasnoyarsk Krai (, ) is a federal subjects of Russia, federal subject (a krai) of Russia located in Siberia. Its administrative center is the types of inhabited localities in Russia, city of Krasnoyarsk, the second-largest city in Siberia after Novosibirsk. Comprising half of the Siberian Federal District, Krasnoyarsk Krai is the largest krai in Russia, the list of subdivisions of Russia by area, second-largest federal subject in the country after neighboring Sakha Republic, Sakha, and the list of the largest country subdivisions by area, third-largest country subdivision by area in the world. The krai covers an area of , constituting roughly 13% of Russia's total area. Krasnoyarsk Krai has a population of 2,856,971 as of the 2021 Russian census, 2021 census. Geography The krai lies in the middle of Siberia, and occupies nearly half of the Siberian Federal District, almost splitting it in half, stretching from the Sayan Mountains in the south along the Yenisei River to the Tay ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atrasado Formation
The Atrasado Formation is a geologic formation in New Mexico. Its fossil assemblage dates the formation to the Kasimovian age of the Pennsylvanian. It was formerly known locally as the Wild Cow Formation or the Guadelupe Box Formation. Description The formation consists primarily of marine limestone with some sandstone and shale. It is exposed in the Sandia Mountains, the Lucero Uplift (), the western Jemez Mountains, and in the Manzano Mountains. The formation has been mapped as the Wild Cow Formation in the Manzano Mountains and as the Guadelupe Box Formation in the Jemez Mountains. However, Spencer G. Lucas and coinvestigators have recommended abandoning the name Wild Cow Formation and using Atrasado Formation throughout the Madera Group. The formation is likely correlative with the Alamitos Formation in the Sangre de Cristo Mountains. The formation is underlain by the Gray Mesa Formation, with its base defined by a sandstone interval atop an eroded limestone surface of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hamilton Quarry
Hamilton Quarry is a Late Carboniferous lagerstätte near Hamilton, Kansas, United States. It has a diverse assemblage of unusually well-preserved marine, euryhaline, freshwater, flying, and terrestrial fossils (invertebrates, vertebrates, and plants). The habitat of some of these faunal elements, as for anamniotic stegocephalians, is debated; although some of these have traditionally been interpreted as freshwater inhabitants, some may have been euryhaline. This extraordinary mix of fossils suggests it was once an estuary. This type of Lagerstätte is considered a ''Konservat-Lagerstätte'' (or ''conservation lagerstätte''), due to the quality the preservation of soft tissue (skin preservation). The lagerstätte occurs within a paleovalley that was incised into the surrounding Carboniferous cyclothemic sequence during a time of low sea level and was then filled in during a subsequent transgression. The channel has a capping series of interbedded laminated limestones and mudston ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meisenheim Formation
Meisenheim () is a town in the Bad Kreuznach district in Rhineland-Palatinate, Germany. It belongs to the like-named ''Verbandsgemeinde'', and is also its seat. Meisenheim is a state-recognized recreational resort (''Erholungsort'') and it is set out as a middle centre in state planning. Geography Location Meisenheim lies in the valley of the River Glan at the northern edge of the North Palatine Uplands. The municipal area measures 1 324 ha. Neighbouring municipalities Clockwise from the north, Meisenheim's neighbours are Raumbach, Rehborn, Callbach, Reiffelbach, Odenbach, Breitenheim and Desloch, all of which likewise lie within the Bad Kreuznach district, except for Odenbach, which lies in the neighbouring Kusel district. Constituent communities Also belonging to Meisenheim are the outlying homesteads of Hof Wieseck, Keddarterhof and Röther Hof. History Meisenheim is believed to have arisen in the 7th century AD, and its name is often derived from the to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acanthodiformes
Acanthodiformes (alternatively spelled Acanthodida) is an Order (biology), order of "Acanthodii, acanthodians" which lived from the Early Devonian to the Early Permian. Members of the order have been found Cosmopolitan distribution, worldwide in rocks preserving both Freshwater fish, freshwater and Saltwater fish, marine environments, and are distinguished from other acanthodians by the presence of only a single dorsal fin and dorsal fin spine, and in most members a lack of Tooth, teeth and well-developed Gill raker, gill rakers. Some acanthodiforms are presumed to have fed by Filter feeder, filter-feeding, and had large mouths and Branchial arch, gill arches. While they have been suggested to be close relatives of modern Osteichthyes, bony fish due to similarities in their skulls, recent research indicates that, like other acanthodians, they are more likely to be stem-group Chondrichthyes, cartilaginous fish. Classification The order was first established by Soviet Union, Sovie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
