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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] |
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] |
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] |
Besano Formation
The Besano Formation is a geological formation in the southern Alps of northwestern Italy and southern Switzerland. This formation, a short but fossiliferous succession of dolomite and black shale, is famous for its preservation of Middle Triassic marine life including fish and aquatic reptiles. It is exposed in the vicinity of Monte San Giorgio and is among the formations responsible for the area being designated as a UNESCO World Heritage Site. In Switzerland, it is also known as the Grenzbitumenzone. Geology General geology The Grenzbitumenzone is a relatively thin band of dark dolomite and shale, approximately 5 to 16 meters in total thickness. It extends about 10 km from east to west along the northern edge of Monte San Giorgio. In individual outcrops, the Grenzbitumenzone overlies the lower part of San Salvatore Dolomite, a thick and widespread carbonate-rich formation. The later parts of the San Salvatore Formation, exposed north of Monte San Giorgio, are partia ... [...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 Oce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ladinian
The Ladinian is a stage and age in the Middle Triassic series or epoch. It spans the time between Ma and ~237 Ma (million years ago). The Ladinian was preceded by the Anisian and succeeded by the Carnian (part of the Upper or Late Triassic). The Ladinian is coeval with the Falangian regional stage used in China. Stratigraphic definitions The Ladinian was established by Austrian geologist Alexander Bittner in 1892. Its name comes from the Ladin people that live in the Italian Alps (in the Dolomites, then part of Austria-Hungary). The base of the Ladinian Stage is defined as the place in the stratigraphic record where the ammonite species '' Eoprotrachyceras curionii'' first appears or the first appearance of the conodont ''Budurovignathus praehungaricus''. The global reference profile for the base (the GSSP) is at an outcrop in the river bed of the Caffaro river at Bagolino, in the province of Brescia, northern Italy.The GSSP was established by Brack ''et al.'' (2005 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meride Limestone
Meride is a village and former municipality in the district of Mendrisio in the canton of Ticino in Switzerland. On 14 April 2013 the former municipalities of Besazio, Ligornetto and Meride merged into the municipality of Mendrisio.Amtliches Gemeindeverzeichnis der Schweiz published by the Swiss Federal Statistical Office accessed 2 January 2013 History Meride is first mentioned in 852 as ''Melede''. In 1430 it was mentioned as ''Merede''. The area around Meride is of great interest to s and |
Triassic Bony Fish
The Triassic ( ) is a geologic period and system which spans 50.6 million years from the end of the Permian Period 251.902 million years ago ( Mya), to the beginning of the Jurassic Period 201.36 Mya. The Triassic is the first and shortest period of the Mesozoic Era. Both the start and end of the period are marked by major extinction events. The Triassic Period is subdivided into three epochs: Early Triassic, Middle Triassic and Late Triassic. The Triassic began in the wake of the Permian–Triassic extinction event, which left the Earth's biosphere impoverished; it was well into the middle of the Triassic before life recovered its former diversity. Three categories of organisms can be distinguished in the Triassic record: survivors from the extinction event, new groups that flourished briefly, and other new groups that went on to dominate the Mesozoic Era. Reptiles, especially archosaurs, were the chief terrestrial vertebrates during this time. A specialized subgroup of archosaurs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prehistoric Lobe-finned Fish Genera
Prehistory, also known as pre-literary history, is the period of human history between the use of the first stone tools by hominins 3.3 million years ago and the beginning of recorded history with the invention of writing systems. The use of symbols, marks, and images appears very early among humans, but the earliest known writing systems appeared 5000 years ago. It took thousands of years for writing systems to be widely adopted, with writing spreading to almost all cultures by the 19th century. The end of prehistory therefore came at very different times in different places, and the term is less often used in discussing societies where prehistory ended relatively recently. In the early Bronze Age, Sumer in Mesopotamia, the Indus Valley Civilisation, and ancient Egypt were the first civilizations to develop their own scripts and to keep historical records, with their neighbors following. Most other civilizations reached the end of prehistory during the following Iron Age. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Undina
Undines (; also ondines) are a category of elemental beings associated with water, stemming from the alchemical writings of Paracelsus. Later writers developed the undine into a water nymph in its own right, and it continues to live in modern literature and art through such adaptations as Danish Hans Christian Andersen's "The Little Mermaid" and the ''Undine'' of Friedrich de la Motte Fouqué. Etymology The term ''Undine'' first appears in the alchemical writings of Paracelsus, a Renaissance alchemist and physician. It derives from the Latin word ''unda'', meaning "wave", and first appears in Paracelsus' ''A Book on Nymphs, Sylphs, Pygmies, and Salamanders, and on the Other Spirits'', published posthumously in 1566. ''Ondine'' is an alternative spelling, and has become a female given name. Elementals Paracelsus believed that each of the four classical elements – earth, water, air and fire – is inhabited by different categories of elemental spirits, liminal creat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coelacanthus
''Coelacanthus'' ("Hollow Spine") is a genus of extinct coelacanths that first appeared during the Permian period. It was the first genus of coelacanths described, about a century before the discovery of the extant coelacanth. The order Coelacanthiformes is named after it. Description ''Coelacanthus'' bears a superficial similarity to the living coelacanth ''Latimeria'', though it was smaller, and had a more elongated head. Individuals grew up to in length, had an elongate codavypter or supplementary tail lobe, and had small lobed fins, suggesting that ''Coelacanthus'' were open-water predators. The fin rays of the caudal fin are hollow, which gave ''Coelacanthus'' its name. The name is an adaptation of the Modern Latin cœlacanthus ("hollow spine"), from the Greek κοῖλ-ος (koilos; "hollow") and ἄκανθ-α (akantha; "spine"). These hollow spines are a typical feature of coelacanths. Distribution and time The type species ''Coelacanthus granulatus'' was described ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coelacanthidae
Coelacanthidae is an extinct family of coelacanths found in freshwater and marine strata throughout the world, originating during the Permian, and finally dying out during the Jurassic. The modern-day genus ''Latimeria'' is often erroneously thought to be in this family, when, in fact, it is the type genus of the more advanced family Latimeriidae, which appeared some time during the Triassic The Triassic ( ) is a geologic period and system which spans 50.6 million years from the end of the Permian Period 251.902 million years ago ( Mya), to the beginning of the Jurassic Period 201.36 Mya. The Triassic is the first and shortest per .... References Permian bony fish Triassic bony fish Jurassic bony fish Jurassic extinctions Prehistoric lobe-finned fish families Permian first appearances {{paleo-lobefinned-fish-stub ... [...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] |
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