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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 La ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Latimerioidei
The coelacanths ( ) are fish belonging to the order Actinistia that includes two Extant taxon, 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 (evolution), 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 Actinopterygii, 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 becom ... [...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] |
Holophagus
''Holophagus'' is an extinct genus of coelacanth belonging to Latimeriidae. The type species, ''Holophagus gulo,'' is known from the Lower Jurassic marine Lias Lias may refer to: Geology * Lias Formation, a geologic formation in France *Lias Group, a lithostratigraphic unit in western Europe * Early Jurassic, an epoch People * Godfrey Lias, British author * Mohd Shamsudin Lias (born 1953), Malaysian ... of England. A similar form, referred to as ''cf''. ''Holophagus'', has been reported from the Early Cretaceous Las Hoyas site of Spain. References Prehistoric lobe-finned fish genera Jurassic bony fish Latimeriidae Jurassic fish of Europe {{Jurassic-fish-stub ... [...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 The Maastrichtian () is, in ... [...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 species: the West Indian Ocean coelacanth (''Latimeria chalumnae'') and the Indonesian coelacanth (''Latimeria menadoensis''). They follow the oldest known living lineage of Sarcopterygii (lobe-finned fish and tetrapods), which means they are more closely related to lungfish and tetrapods (amphibians, reptiles and mammals) than to the common ray-finned fishes and 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 live as long as 80 to 100 years. Coelacanths live as deep as 700& ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Undina (fish)
''Undina'' is a genus of prehistoric coelacanth, lobe-finned fish, which lived from the Triassic period to the Cretaceous The Cretaceous ( ) is a geological period that lasted from about 145 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the longest. At around 79 million years, it is the longest geological period of ... period. Species * ''Undina acutidens'' Reis, 1888 * ''Undina barroviensis'' * ''Undina gulo'' (synonym: ''Holophagus gulo'') (type species) * ''Undina penicillata'' (Munster) * ''Undina? picena'' (Costa, 1862) * ''Undina purbeckensis'' Distribution Species of this genus have been found in Cretaceous of Spain, in Jurassic of Germany, Turkey and the United Kingdom and in Triassic of Italy. References The Paleobiology Database*Paul H. LAMBERredescription of the coelacanth Macropoma willemoesii VETTER from the lithographic limestone of Solnhofen (Upper Jurassic, Bavaria) [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Foreyia
''Foreyia'' is an extinct genus of coelacanth lobe-finned fish which lived during the Middle Triassic period in what is now Canton of Graubünden, Switzerland. It contains a single species ''F. maxkuhni''. Description and classification ''F. maxkuhni'' is an aberrant-looking member of the family Latimeriidae, with a proportionally enormous head, a curved, beak-like maxilla, an underbite, and a low, horn-like point on its otherwise dome-like head. Despite such a bizarre appearance, phylogenetic analyses squarely place ''F. maxkuhni'' as the sister taxon of '' Ticinepomis'', another latimeriid also found in the same strata. The two latimeriids share numerous anatomical traits with each other, strongly suggesting a close relation. Naming The generic name honors the late Peter L. Forey for his contributions to the study of coelacanth The coelacanths ( ) are fish belonging to the order Actinistia that includes two extant species in the genus ''Latimeria'': the West Indian Oc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Libys
''Libys'' is a genus of coelacanth lobe-finned fish in the family of Latimeridae. Species of ''Libys'' lived during the Upper Jurassic period (Kimmeridgian - Tithonian, about 150 to 145 million years ago). Description ''Libys'' had an exceptionally squat body, especially when compared to other coelacanths of the same period as '' Undina'' and ''Holophagus''. ''Libys'' could reach 60 centimeters in length and was therefore a medium-sized coelacanth, with a short and high skull. The pectoral fins were quite long, while the tail was remarkably short and high Distribution Fossils of these fishes have been found in Germany Germany,, officially the Federal Republic of Germany, is a country in Central Europe. It is the second most populous country in Europe after Russia, and the most populous member state of the European Union. Germany is situated betwe ..., in the famous deposits of Solnhofen. Species * ''Libys superbus'' Reis, 1888 * ''Libys polypterus'' The genu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Macropoma
''Macropoma'' (from Greek μακρός "large" + πόμα "cover", after its large operculum) is an extinct genus of coelacanth in the class Sarcopterygii. Fossils of ''Macropoma'' have been found in both England and Czech Republic, dating to the mid-Cretaceous (Albian-Turonian). Recorded fossils have bodies under two feet in length. A modern coelacanth measures five or more, but in other respects the two genera are remarkably similar, and share the same body plan with a three-lobed tail and stalked fins. ''Macropoma'' grew to a length of 22 inches (55 centimeters) and would have preyed upon smaller aquatic species. References * Barry Cox, Colin Harrison, R.J.G. Savage, and Brian Gardiner. (1999): The Simon & Schuster Encyclopedia of Dinosaurs and Prehistoric Creatures: A Visual Who's Who of Prehistoric Life. Simon & Schuster Simon & Schuster () is an American publishing company and a subsidiary of Paramount Global. It was founded in New York City on January 2, 192 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Macropomoides
''Macropomoides'' is an extinct genus of lobe-finned fish which lived during the Cretaceous period The Cretaceous ( ) is a geological period that lasted from about 145 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the longest. At around 79 million years, it is the longest geological period of t .... References Prehistoric lobe-finned fish genera Latimeriidae Cretaceous bony fish Cretaceous fish of Europe Fossil taxa described in 1942 Cretaceous genus first appearances Cretaceous genus extinctions {{Cretaceous-fish-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Megalocoelacanthus
''Megalocoelacanthus dobiei'' is an extinct species of giant latimeriidae, latimeriid coelacanth Sarcopterygii, lobe-finned fish which lived during the Lower Campanian epoch until possibly the early Maastrichtian in the Late Cretaceous period in Appalachia (Mesozoic), Appalachia, the Western Interior Seaway and Mississippi Embayment. Its disarticulated remains have been recovered from the Eutaw Formation, Mooreville Chalk Formation, and Blufftown Formation of Alabama, Mississippi, and Georgia (U.S. state), Georgia, and also from the Niobrara Formation of Kansas. Although no complete skeleton is known, careful examination of skeletal elements demonstrate it is closely related to the Jurassic-aged coelacanthid ''Libys''. The species is named for herpetologist James L. Dobie. It has been estimated to have been 3.5—4.5 meters in length.Dutel H, Maisey JG, Schwimmer DR, Janvier P, Herbin M, Clément G (2012) The Giant Cretaceous Coelacanth (Actinistia, Sarcopterygii) Megalocoelacant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ticinepomis
left, Marine life of the Early and early Middle Triassic: ''Ticinepomis'' (13) ''Ticinepomis'' is an extinct genus of coelacanth lobe-finned fish which lived during the Middle Triassic period in what is now Switzerland. It contains a single species, ''T. peyeri''. ''T. peyeri'' specimens are most common in the Besano Formation (or Grenzbitumenzone) of Monte San Giorgio in Ticino. Other coelacanths from Monte San Giorgio include a larger species (tentatively referred to '' Holophagus picenus'') from the Besano Formation, and a species of ''Heptanema'' from the Meride Limestone. Larger ''Ticinepomis'' specimens have been found in the Prosanto Formation of Graubünden. ''Ticinepomis'' was originally described as being a member of the family Coelacanthidae, being similar to ''Coelacanthus'', ''Holophagus'' and '' Undina''. Later, ''T. peyeri'' was placed in Latimeriidae Latimeriidae is the only extant family of coelacanths, an ancient lineage of lobe-finned fish. It contains ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
