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Mawsoniidae
Mawsoniidae is an extinct family of prehistoric coelacanth fishes which lived during the Triassic to Cretaceous periods. Members of the family are distinguished from their sister group, the Latimeriidae (which contains the living coelacanths of the genus ''Latimeria'') by the presence of ossified ribs, a coarse rugose texture on the dermatocranium and cheek bones, the absence of the suboperculum and the spiracular, and reduction or loss of the descending process of the supratemporal. Mawsoniids are known from North America, Europe, South America, Africa, Madagascar and Asia. Unlike Latimeriidae, which are exclusively marine, Mawsoniidae were also native to freshwater and brackish environments. Mawsoniids represent among the youngest known coelacanths, with the youngest known remains of the freshwater genus ''Axelrodichthys'' from France and an indeterminate marine species from Morocco being from the final stage of the Cretaceous, the Maastrichtian, roughly equivalent in age to th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coelacanth
The coelacanths ( ) are fish belonging to the order Actinistia that includes two extant species in the genus ''Latimeria'': the West Indian Ocean coelacanth (''Latimeria chalumnae''), primarily found near the Comoro Islands off the east coast of Africa, and the Indonesian coelacanth (''Latimeria menadoensis''). The name "coelacanth" originates from the Permian genus ''Coelacanthus'', which was the first scientifically named coelacanth. Coelacanths follow the oldest-known living lineage of Sarcopterygii (lobe-finned fish and tetrapods), which means they are more closely related to lungfish and tetrapods (which includes amphibians, reptiles, birds and mammals) than to ray-finned fish. They are found along the coastline of Indonesia and in the Indian Ocean. The West Indian Ocean coelacanth is a critically endangered species. The oldest known coelacanth fossils are over 410 million years old. Coelacanths were thought to have become extinct in the Late Cretaceous, around 66 m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mawsoniidae
Mawsoniidae is an extinct family of prehistoric coelacanth fishes which lived during the Triassic to Cretaceous periods. Members of the family are distinguished from their sister group, the Latimeriidae (which contains the living coelacanths of the genus ''Latimeria'') by the presence of ossified ribs, a coarse rugose texture on the dermatocranium and cheek bones, the absence of the suboperculum and the spiracular, and reduction or loss of the descending process of the supratemporal. Mawsoniids are known from North America, Europe, South America, Africa, Madagascar and Asia. Unlike Latimeriidae, which are exclusively marine, Mawsoniidae were also native to freshwater and brackish environments. Mawsoniids represent among the youngest known coelacanths, with the youngest known remains of the freshwater genus ''Axelrodichthys'' from France and an indeterminate marine species from Morocco being from the final stage of the Cretaceous, the Maastrichtian, roughly equivalent in age to th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mawsonia (fish)
''Mawsonia'' is an extinct genus of prehistoric coelacanth fish. It is the amongst the largest of all coelacanths, with one quadrate specimen (DGM 1.048-P) possibly belonging to an individual measuring in length. It lived in freshwater and brackish environments from the latest Jurassic to the mid-Cretaceous ( Tithonian to Cenomanian stages, about 152 to 96 million years ago) of South America, eastern North America, and Africa. ''Mawsonia'' was first described by British paleontologist Arthur Smith Woodward in 1907.''Mawsonia'' at Fossilworks.org Description [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alcoveria
''Alcoveria'' is an extinct genus of mawsoniid coelacanth fish which lived during the Triassic period. ''Alcoveria'' is known from a well preserved specimen from Spain , image_flag = Bandera de España.svg , image_coat = Escudo de España (mazonado).svg , national_motto = ''Plus ultra'' (Latin)(English: "Further Beyond") , national_anthem = (English: "Royal March") , i .... It lived in a marine environment. References Mawsoniidae Prehistoric bony fish genera Triassic bony fish Fossils of Spain {{paleo-lobefinned-fish-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Axelrodichthys
''Axelrodichthys'' is an extinct genus of mawsoniid coelacanth from the Cretaceous of Africa, North and South America, and Europe. Several species are known, the remains of which were discovered in the Lower Cretaceous (Aptian-Albian) of Brazil, North Africa, and possibly Mexico, as well as in the Upper Cretaceous of Morocco (Cenomanian), Madagascar (Coniacian –Santonian) and France (Lower Campanian to Lower Maastrichtian). The ''Axelrodichthys'' of the Lower Cretaceous frequented both brackish and coastal marine waters (lagoon-coastal environment) while the most recent species lived exclusively in fresh waters (lakes and rivers). The French specimens are the last known fresh water coelacanths. Most of the species of this genus reached to in length. ''Axelrodichthys'' was named in 1986 by John G. Maisey in honor of the American ichthyologist Herbert R. Axelrod. Description Like its close relative '' Mawsonia'', ''Axelrodichthys'' is a coelacanth with an elongated, low, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trachymetopon
''Trachymetopon'' is an extinct genus of prehistoric coelacanth from the Jurassic of Europe. Fossils have been found in the Early Jurassic Posidonia Shale of Germany the Middle Jurassic Marnes de Dives of France, and probably the Late Jurassic Kimmeridge Clay of England. Only one species has been named, ''Trachymetopon liassicum'', described by Henning in 1951 from an almost complete specimen found in the Lower Toarcian of Ohmden in Baden-Württemberg.Hennig, E. (1951). Trachymetopon liassicum, Ald., ein Reisen-Crossopterygier aus Schwäbischem Ober-Lias. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen, Stuttgart, 94, 67-79. Another specimen is known from the same site, and two older specimens come from the Sinemurian of Holzmaden. The holotype of this species is in length. A giant specimen of an undetermined species of ''Trachymetopon'' found at the Middle Jurassic (Late Callovian) Falaises des Vaches Noires of Normandy. This specimen, composed of a 53 cm long palat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diplurus
''Diplurus'' is a genus of prehistoric mawsoniid coelacanth fish which lived during the Triassic The Triassic ( ) is a geologic period and system (stratigraphy), system which spans 50.6 million years from the end of the Permian Period 251.902 million years ago (Year#Abbreviations yr and ya, Mya), to the beginning of the Jurassic Period 201.36 ... period. References Mawsoniidae Prehistoric lobe-finned fish genera Triassic bony fish Fossils of the United States {{paleo-lobefinned-fish-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lualabaea
''Lualabaea'' is an extinct genus of prehistoric coelacanth, belonging to the family Mawsoniidae, containing the single species ''L. lerichei.'' It has been found in Late Jurassic or Berriasian aged deposits in the Democratic Republic of the Congo. See also * Sarcopterygii Sarcopterygii (; ) — sometimes considered synonymous with Crossopterygii () — is a taxon (traditionally a class or subclass) of the bony fishes known as the lobe-finned fishes. The group Tetrapoda, a mostly terrestrial superclass includi ... * List of sarcopterygians * List of prehistoric bony fish References Prehistoric lobe-finned fish genera {{paleo-lobefinned-fish-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Latimeriidae
Latimeriidae is the only extant family of coelacanths, an ancient lineage of lobe-finned fish. It contains two extant species in the genus ''Latimeria'', found in deep waters off the coasts of southern Africa and east-central Indonesia. In addition, several fossil genera are known from the Mesozoic of Europe, the Middle East, and the southeastern United States, dating back to the Triassic. The latimeriids are thought to have always been an exclusively marine group. They may have originated in the western Tethys Sea, as many of the earliest species are known from areas that it formerly covered. The largest known member of the family, the Late Cretaceous ''Megalocoelacanthus,'' may have reached 4.5 metres in length. The Latimeriidae are thought to be the sister group to the Mawsoniidae, an extinct family of coelacanths that survived until the Late Cretaceous, inhabited both freshwater and marine habitats, and contained some very large species. Together, both comprise the suborder Lat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parnaibaia
''Parnaibaia'' is a genus of coelacanth fish which lived during the Late Jurassic period. Fossils of ''Parnaibaia'' have been found in the Pastos Bons Formation in Maranhão, Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area .... ''Parnaibaia'' was described for the first time by palaeontologist Yoshitaka Yabumoto in 2008. References Further reading * Prehistoric lobe-finned fish genera Jurassic bony fish Late Jurassic fish Prehistoric fish of South America Jurassic Brazil Fossils of Brazil Fossil taxa described in 2008 {{Jurassic-fish-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chinlea
''Chinlea'' is an extinct genus of Triassic mawsoniid coelacanth fish found in and named after the Chinle Formation that crops out in the southwestern states of Arizona and New Mexico ) , population_demonym = New Mexican ( es, Neomexicano, Neomejicano, Nuevo Mexicano) , seat = Santa Fe , LargestCity = Albuquerque , LargestMetro = Tiguex , OfficialLang = None , Languages = English, Spanish ( New Mexican), Navajo, Ke .... The length of ''Chinlea'' was about . ''Chinlea'' had lobed fins and a slender tail. The teeth were large and sharp. References Mawsoniidae Triassic bony fish Prehistoric bony fish genera Chinle fauna Fossil taxa described in 1967 {{paleo-lobefinned-fish-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Latimeria
''Latimeria'' is a rare genus of fish which contains the only living species of coelacanth. It includes two Extant taxon, extant species: the West Indian Ocean coelacanth (''Latimeria chalumnae'') and the Indonesian coelacanth (''Latimeria menadoensis''). They follow the oldest known living Lineage (evolution), lineage of Sarcopterygii (lobe-finned fish and tetrapods), which means they are more closely related to lungfish and Tetrapod, tetrapods (Amphibian, amphibians, reptiles and mammals) than to the common ray-finned fishes and Chondrichthyes, cartilaginous fishes. They are found along the coastlines of the Indian Ocean and Indonesia. Since there are only two species of coelacanth and both are threatened, it is one of the most endangered genera of animals in the world. The West Indian Ocean coelacanth is a critically endangered species. Biological characteristics Based on growth rings in the creatures' ear bones (otoliths), scientists infer that individual coelacanths may l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
