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Eochanna Chorlakkiensis
''Eochanna chorlakkiensis'' is an extinct prehistoric snakehead. The fish lived in the Lutetian age of the Middle Eocene (41-48 million years ago) in the area of what is now the Kuldana Formation near Chorlakki, Pakistan Pakistan ( ur, ), officially the Islamic Republic of Pakistan ( ur, , label=none), is a country in South Asia. It is the world's List of countries and dependencies by population, fifth-most populous country, with a population of almost 24 ....Roe, L. J. (1991):Phylogenetic and Ecological Significance of Channidae (Osteichthyes Teleostei) from the Early Eocene Kuldana Formation of Kohat, Pakistan. ''Contributions From The Museum Of Paleontology, The University Of Michigan, VOL. 28, NO. 5, PP. 93-10'' References Channidae Fossil taxa described in 1991 {{Anabantiformes-stub ...
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Middle Eocene
The Eocene ( ) Epoch is a geological epoch that lasted from about 56 to 33.9 million years ago (mya). It is the second epoch of the Paleogene Period in the modern Cenozoic Era. The name ''Eocene'' comes from the Ancient Greek (''ēṓs'', "dawn") and (''kainós'', "new") and refers to the "dawn" of modern ('new') fauna that appeared during the epoch. The Eocene spans the time from the end of the Paleocene Epoch to the beginning of the Oligocene Epoch. The start of the Eocene is marked by a brief period in which the concentration of the carbon isotope 13C in the atmosphere was exceptionally low in comparison with the more common isotope 12C. The end is set at a major extinction event called the ''Grande Coupure'' (the "Great Break" in continuity) or the Eocene–Oligocene extinction event, which may be related to the impact of one or more large bolides in Siberia and in what is now Chesapeake Bay. As with other geologic periods, the strata that define the start and end o ...
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Lois J
Lois is a common English name from the New Testament. Paul the Apostle mentions Lois, the pious grandmother of Saint Timothy in the Second Epistle to Timothy (commending her for her faith in 2 Timothy 1:5). The name was first used by English Christians after the Protestant Reformation, and it was popular, particularly in North America, during the first half of the 20th century. Notable women * Lois Bryan Adams (1817-1870), American writer, journalist, newspaper editor * Lois McMaster Bujold, author * Lois Capps, congresswoman * Lois Chiles, actress * Lois Collier, actress * Lois Ehlert, writer * Lois Hole, lieutenant governor of Alberta (2000–2005) * Lois Johnson (1942–2014), American country music singer * Lois Kolkhorst, American politician * Lois M. Leveen, author * Lois Lilienstein, singer * Lois Long, writer for The New Yorker * Lois Lowry, author * Lois Maffeo (''Lois''), musician * Lois Maxwell, actress * Lois McCallin, athlete * Lois McConnell, lead singer of Euro ...
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Extinct
Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and recover may have been lost before this point. Because a species' potential range may be very large, determining this moment is difficult, and is usually done retrospectively. This difficulty leads to phenomena such as Lazarus taxa, where a species presumed extinct abruptly "reappears" (typically in the fossil record) after a period of apparent absence. More than 99% of all species that ever lived on Earth, amounting to over five billion species, are estimated to have died out. It is estimated that there are currently around 8.7 million species of eukaryote globally, and possibly many times more if microorganisms, like bacteria, are included. Notable extinct animal species include non-avian dinosaurs, saber-toothed cats, dodos, ...
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Prehistoric
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 Ir ...
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Snakehead (fish)
The snakeheads are members of the freshwater perciform fish family Channidae, native to parts of Africa and Asia. These elongated, predatory fish are distinguished by their long dorsal fins, large mouths, and shiny teeth. They breathe air with gills, which allows them to migrate short distances over land. They have suprabranchial organs, which are primitive forms of labyrinth organs, that develop when they grow older. The two extant genera are '' Channa'' in Asia and '' Parachanna'' in Africa, consisting of more than 50 species. They are valuable as a food source and have become notorious as an intentionally released invasive species. These fish have been kept as pets but as they get larger, people let them go into ponds, lakes, and rivers, making these fish invasive. Description The various species of snakeheads differ greatly in size; dwarf snakeheads, such as ''Channa orientalis'', do not surpass in length. Most other snakeheads reach between . Five species ('' C. argu ...
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Lutetian
The Lutetian is, in the geologic timescale, a stage or age in the Eocene. It spans the time between . The Lutetian is preceded by the Ypresian and is followed by the Bartonian. Together with the Bartonian it is sometimes referred to as the Middle Eocene Subepoch. Stratigraphic definition The Lutetian was named after Lutetia, the Latin name for the city of Paris. The Lutetian Stage was introduced in scientific literature by French geologist Albert de Lapparent in 1883 and revised by A. Blondeau in 1981. The base of the Lutetian Stage is at the first appearance of the nanofossil ''Blackites inflatus'', according to an official reference profile ( GSSP) established in 2011. Of two candidates located in Spain, the Gorrondatxe section was chosen.See thwebsite of Eustoquio Molinafor these candidates. The top of the Lutetian (the base of the Bartonian) is at the first appearance of calcareous nanoplankton species ''Reticulofenestra reticulata''. The Lutetian overlaps with t ...
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Kuldana Formation
Kala Chitta Range (in Punjabi and ur, ''Kālā Chiṭṭā'') is a mountain range in the Attock District of Punjab, Pakistan. Kala- Chitta are Punjabi words meaning Kala the Black and Chitta means the white. The range thrusts eastward across the Potohar plateau towards Rawalpindi. Pakistan's Kuldana Formation is best known for its fossil mammals, including primitive cetaceans such as Pakicetus and their close relatives. Kuldana mammals have been considered in different studies as early Luthecians (early Middle Eocene), late Ypresians (late early Eocene) or, recently, they encompass much of Ypresians up to early Lutheian time (early part of the early Eocene to early Eocene medium). Kuldana Formation The Kuldana Formation is located in the Kata Chita hills and is a thin, 20-120 m thick tongue of low-lying continental red beds that lie within a much thicker sequence of foraminifera-rich marine formations. Shallow planktonic and benthic foraminifera limit the age of the Kulda ...
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Pakistan
Pakistan ( ur, ), officially the Islamic Republic of Pakistan ( ur, , label=none), is a country in South Asia. It is the world's fifth-most populous country, with a population of almost 243 million people, and has the world's second-largest Muslim population just behind Indonesia. Pakistan is the 33rd-largest country in the world by area and 2nd largest in South Asia, spanning . It has a coastline along the Arabian Sea and Gulf of Oman in the south, and is bordered by India to the east, Afghanistan to the west, Iran to the southwest, and China to the northeast. It is separated narrowly from Tajikistan by Afghanistan's Wakhan Corridor in the north, and also shares a maritime border with Oman. Islamabad is the nation's capital, while Karachi is its largest city and financial centre. Pakistan is the site of several ancient cultures, including the 8,500-year-old Neolithic site of Mehrgarh in Balochistan, the Indus Valley civilisation of the Bronze Age, the most extens ...
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Channidae
The snakeheads are members of the freshwater perciform fish family Channidae, native to parts of Africa and Asia. These elongated, predatory fish are distinguished by their long dorsal fins, large mouths, and shiny teeth. They breathe air with gills, which allows them to migrate short distances over land. They have suprabranchial organs, which are primitive forms of labyrinth organs, that develop when they grow older. The two extant genera are ''Channa'' in Asia and ''Parachanna'' in Africa, consisting of more than 50 species. They are valuable as a food source and have become notorious as an intentionally released invasive species. These fish have been kept as pets but as they get larger, people let them go into ponds, lakes, and rivers, making these fish invasive. Description The various species of snakeheads differ greatly in size; dwarf snakeheads, such as '' Channa orientalis'', do not surpass in length. Most other snakeheads reach between . Five species ('' C. argus'' ...
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