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Strongylosteus
''Strongylosteus'' is an extinct genus of prehistoric ray-finned fish that lived during the early Toarcian age of the Early Jurassic epoch.Hennig, E. (1925). ''Chondrosteus Hindenburgi'' Pomp.---Ein «Stör» des württembergischen Ölschiefers (Lias\epsilon). Palaeontographica (1846-1933), 115-134. Its type species is ''Strongylosteus hindenburgi'' (monotypy). It is related to modern sturgeon and paddlefish (Acipenseroidei), but with a different kind of mouth than common species, made for hunting prey in open waters, with a strong lower jaw, similar to modern beluga. ''Strongylosteus'' is a large member of the family Chondrosteidae, and the largest non-reptilian marine vertebrate in the Posidonia Shale, with a size between and , and an estimated weight over 800 kg to 1 tonne. ''Strongylosteus'' has been suggested as a junior synonym of ''Chondrosteus'', although there haven't been any new revisions about the status of the genus. See also * Prehistoric fish The e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Strongylosteus Hindenburgi
''Strongylosteus'' is an extinct genus of prehistoric ray-finned fish that lived during the early Toarcian age of the Early Jurassic epoch.Hennig, E. (1925). ''Chondrosteus Hindenburgi'' Pomp.---Ein «Stör» des württembergischen Ölschiefers (Lias\epsilon). Palaeontographica (1846-1933), 115-134. Its type species is ''Strongylosteus hindenburgi'' (monotypy). It is related to modern sturgeon and paddlefish (Acipenseroidei), but with a different kind of mouth than common species, made for hunting prey in open waters, with a strong lower jaw, similar to modern beluga. ''Strongylosteus'' is a large member of the family Chondrosteidae, and the largest non-reptilian marine vertebrate in the Posidonia Shale, with a size between and , and an estimated weight over 800 kg to 1 tonne. ''Strongylosteus'' has been suggested as a junior synonym of ''Chondrosteus'', although there haven't been any new revisions about the status of the genus. See also * Prehistoric fish * List of pre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Strongylosteus Hindenburgi Skull
''Strongylosteus'' is an extinct genus of prehistoric ray-finned fish that lived during the early Toarcian age of the Early Jurassic epoch.Hennig, E. (1925). ''Chondrosteus Hindenburgi'' Pomp.---Ein «Stör» des württembergischen Ölschiefers (Lias\epsilon). Palaeontographica (1846-1933), 115-134. Its type species is ''Strongylosteus hindenburgi'' (monotypy). It is related to modern sturgeon and paddlefish ( Acipenseroidei), but with a different kind of mouth than common species, made for hunting prey in open waters, with a strong lower jaw, similar to modern beluga. ''Strongylosteus'' is a large member of the family Chondrosteidae, and the largest non-reptilian marine vertebrate in the Posidonia Shale The Posidonia Shale (german: Posidonienschiefer, also called Schistes Bitumineux in Luxembourg) geologically known as the Sachrang Formation, is an Early Jurassic (Toarcian) geological formation of southwestern and northeast Germany, northern Swit ..., with a size between a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Strongylosteus Hindenburgi Tubingen
''Strongylosteus'' is an extinct genus of prehistoric ray-finned fish that lived during the early Toarcian age of the Early Jurassic epoch.Hennig, E. (1925). ''Chondrosteus Hindenburgi'' Pomp.---Ein «Stör» des württembergischen Ölschiefers (Lias\epsilon). Palaeontographica (1846-1933), 115-134. Its type species is ''Strongylosteus hindenburgi'' (monotypy). It is related to modern sturgeon and paddlefish (Acipenseroidei), but with a different kind of mouth than common species, made for hunting prey in open waters, with a strong lower jaw, similar to modern beluga. ''Strongylosteus'' is a large member of the family Chondrosteidae, and the largest non-reptilian marine vertebrate in the Posidonia Shale, with a size between and , and an estimated weight over 800 kg to 1 tonne. ''Strongylosteus'' has been suggested as a junior synonym of ''Chondrosteus'', although there haven't been any new revisions about the status of the genus. See also * Prehistoric fish * List of pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chondrosteidae
Chondrosteidae is a family of extinct marine actinopterygian fishes in the order Acipenseriformes. Three genera are known from the Early Jurassic of Europe, '' Chondrosteus'', ''Gyrosteus'', and ''Strongylosteus''. Included species were of large size, with body lengths ranging from up to . Their skeleton was largely made up of bones (unlike living chondrosteans), but ossification was reduced compared to other ray-fins. Evolutionary relationships Chondrosteidae are related with the Late Jurassic to Early Cretaceous Asian family Peipiaosteidae, and with living sturgeon and paddlefish ( Acipenseroidei). The Early Triassic ''Eochondrosteus'' from China is more basal than all other aforementioned acipenseriforms. See also * Prehistoric fish * List of prehistoric bony fish A ''list'' is any set of items in a row. List or lists may also refer to: People * List (surname) Organizations * List College Albert A. List College of Jewish Studies, known simply as List Colleg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acipenseroidei
Acipenseriformes is an order of basal ray-finned fishes that includes living and fossil sturgeons and paddlefishes (Acipenseroidei), as well as the extinct families Chondrosteidae and Peipiaosteidae. They are the second earliest diverging group of living ray-finned fish after the bichirs. Despite being early diverging, they are highly derived, having only weakly ossified skeletons that are mostly made of cartilage, and in modern representatives highly modified skulls. Description The axial skeleton of Acipenseriformes is only partially ossified, with the majority of the bones being replaced with cartilage. The notochord, usually only found in fish embryos, is unconstricted and retained throughout life. The premaxilla and maxilla bones of the skull present in other vertebrates have been lost. The infraorbital nerve is carried by a series of separate canals, rather than being within the circumorbital bones. The palatoquadrate bones of the skull possess a cartilagi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chondrosteus
''Chondrosteus'' is a genus of extinct actinopterygian (ray-finned fish) belonging to the family Chondrosteidae. It lived during the Sinemurian (early Early Jurassic) in what is now England. ''Chondrosteus'' is remotely related to sturgeons and paddlefishes. Similar to sturgeons, the jaws of ''Chondrosteus'' were free from the rest of the skull (projectile jaw system). Its scale cover was reduced to the upper lobe of the caudal fin like in paddlefish. The species ''Chondrosteus hindenburgi'' from the Toarcian (late Early Jurassic) of Germany Germany, officially the Federal Republic of Germany (FRG),, is a country in Central Europe. It is the most populous member state of the European Union. Germany lies between the Baltic and North Sea to the north and the Alps to the sou ... was reallocated to the genus '' Strongylosteus''. Although some authors have suggested that the latter might be a junior synonym of ''Chondrosteus'', there are no recent comparative studie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Posidonia Shale
The Posidonia Shale (german: Posidonienschiefer, also called Schistes Bitumineux in Luxembourg) geologically known as the Sachrang Formation, is an Early Jurassic (Toarcian) geological formation of southwestern and northeast Germany, northern Switzerland, northwestern Austria, southern Luxembourg and the Netherlands, including exceptionally well-preserved complete skeletons of fossil marine fish and reptiles.W. Etter and O. Kuhn. 2000. An articulated dragonfly (Insecta, Odonata) from the Upper Liassic Posidonia Shale of Northern Switzerland. Palaeontology 43:967-977Henrotay, M., Marques, D., Paicheler, J. C., Gall, J. C., & Nel, A. (1998). Le Toarcien inférieur des régions de Bascharage et de Bettembourg (Grand-Duché du Luxembourg): évidences paléontologiques et sédimentologiques d'environnements restreints proches de l'émersion. Geodiversitas, 20(2), 263-284. The ''Posidonienschiefer'', as German paleontologists call it, takes its name from the ubiquitous fossils of the oys ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beluga (sturgeon)
The beluga (), also known as the beluga sturgeon or great sturgeon (''Huso huso''), is a species of anadromous fish in the sturgeon family ( Acipenseridae) of order Acipenseriformes. It is found primarily in the Caspian and Black Sea basins, and formerly in the Adriatic Sea. Based on maximum size, it is the third-most-massive living species of bony fish.Aspius">tp://ftp.fao.org/docrep/fao/009/ac482e/ac482e27.pdf Subfamily A ...'', ''Aspius'' and ''Engraulis'' are the preferred prey. In estuaries and rivers of the same area, migrating spawners eat various cyprinids, mainly ''Cyprinus carpio'' and ''Rutilus rutilus'', ''Sander lucioperca'' and, among sturgeons, ''Acipenser ruthenus'' is the main prey. Little is known about the diet of the Adriatic population. It has been reported that in marine and brackish environments, adult ''H. huso'' forage primarily on molluscs ( Cephalopoda, of which common cuttlefish, ''Sepia officinalis,'' and European squid, ''Loligo vulgaris,'' are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Prehistoric Bony Fish
A ''list'' is any set of items in a row. List or lists may also refer to: People * List (surname) Organizations * List College, an undergraduate division of the Jewish Theological Seminary of America * SC Germania List, German rugby union club Other uses * Angle of list, the leaning to either port or starboard of a ship * List (information), an ordered collection of pieces of information ** List (abstract data type), a method to organize data in computer science * List on Sylt, previously called List, the northernmost village in Germany, on the island of Sylt * ''List'', an alternative term for ''roll'' in flight dynamics * To ''list'' a building, etc., in the UK it means to designate it a listed building that may not be altered without permission * Lists (jousting), the barriers used to designate the tournament area where medieval knights jousted * ''The Book of Lists'', an American series of books with unusual lists See also * The List (other) * Listing (d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prehistoric Fish
The evolution of fish began about 530 million years ago during the Cambrian explosion. It was during this time that the early chordates developed the skull and the vertebral column, leading to the first craniates and vertebrates. The first fish lineages belong to the Agnatha, or jawless fish. Early examples include '' Haikouichthys''. During the late Cambrian, eel-like jawless fish called the conodonts, and small mostly armoured fish known as ostracoderms, first appeared. Most jawless fish are now extinct; but the extant lampreys may approximate ancient pre-jawed fish. Lampreys belong to the Cyclostomata, which includes the extant hagfish, and this group may have split early on from other agnathans. The earliest jawed vertebrates probably developed during the late Ordovician period. They are first represented in the fossil record from the Silurian by two groups of fish: the armoured fish known as placoderms, which evolved from the ostracoderms; and the Acanthodii (or s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vertebrate
Vertebrates () comprise all animal taxon, taxa within the subphylum Vertebrata () (chordates with vertebral column, backbones), including all mammals, birds, reptiles, amphibians, and fish. Vertebrates represent the overwhelming majority of the phylum Chordata, with currently about 69,963 species described. Vertebrates comprise such groups as the following: * Agnatha, jawless fish, which include hagfish and lampreys * Gnathostomata, jawed vertebrates, which include: ** Chondrichthyes, cartilaginous fish (sharks, Batoidea, rays, and Chimaeriformes, ratfish) ** Euteleostomi, bony vertebrates, which include: *** Actinopterygii, ray-fins (the majority of living Osteichthyes, bony fish) *** lobe-fins, which include: **** coelacanths and lungfish **** tetrapods (limbed vertebrates) Extant taxon, Extant vertebrates range in size from the frog species ''Paedophryne amauensis'', at as little as , to the blue whale, at up to . Vertebrates make up less than five percent of all described a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
Family ( la, familia, plural ') is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as the "walnut family". What belongs to a family—or if a described family should be recognized at all—are proposed and determined by practicing taxonomists. There are no hard rules for describing or recognizing a family, but in plants, they can be characterized on the basis of both vegetative and reproductive features of plant species. Taxonomists often take different positions about descriptions, and there may be no broad consensus across the scientific community for some time. The publishing of new data and opi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
