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Diablophis
''Diablophis'' is a genus of Late Jurassic stem-snake from the Morrison Formation of North America. The type and only species, ''D. gilmorei'' was once thought to be a species of ''Parviraptor'' but is now classified as its own genus. The animal is known from multiple specimens, the holotype A holotype is a single physical example (or illustration) of an organism, known to have been used when the species (or lower-ranked taxon) was formally described. It is either the single such physical example (or illustration) or one of sever ... being LACM 4684/140572, which consists of a broken right mandible, broken right maxilla and broken axis vertebrae. A number of other specimens have also been attributed to ''Diablophis'', including LACM 4684/140572 and LACM 5572/120732, the specimens previously attributed to ''Parviraptor'' and LACM 4684/120472. Phylogeny ''Diablophis'' has been recovered as a basal snake, though this placement is not undisputed. The cladogram from figure 4 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parviraptor
''Parviraptor'' is a genus of stem-snake (clade Ophidia) containing one species, ''Parviraptor estesi'', from the Late Jurassic (Tithonian) or Early Cretaceous (Berriasian) Purbeck Limestone Formation of Dorset, England. A second species, ''Parviraptor gilmorei'', was described from the Late Jurassic Morrison Formation of Western North America;Foster, J. (2007). "Table 2.1: Fossil Vertebrates of the Morrison Formation." ''Jurassic West: The Dinosaurs of the Morrison Formation and Their World''. Indiana University Press. pp. 58-59. it was present in stratigraphic zone 4.Foster, J. (2007). "'' Enneabatrachus hechti''" ''Jurassic West: The Dinosaurs of the Morrison Formation and Their World''. Indiana University Press. p. 137. However, the second species was subsequently transferred to a separate genus '' Diablophis''. An indeterminate species is known from the Bathonian aged Kirtlington Mammal Bed ( Kilmaluag Formation, Scotland). Description The shape, length, and body form of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eophis
''Eophis'' is an early genus of stem-snake (clade Ophidia) containing one species, ''Eophis underwoodi'', from the Middle Jurassic (Bathonian) from the Forest Marble Formation of United Kingdom. It is known from a fragmentary dentary from Kirtlington Quarry. It was previously interpreted as an anguimorph lizard. The placement of ''Eophis'' as a stem snake was re-affirmed by subsequent analyses. Phylogeny Cladogram A cladogram (from Greek ''clados'' "branch" and ''gramma'' "character") is a diagram used in cladistics to show relations among organisms. A cladogram is not, however, an evolutionary tree because it does not show how ancestors are related to ... based in the phylogenetic analysis by Caldwell ''et al.'' (2015): See also References Prehistoric reptile genera Middle Jurassic reptiles of Europe Fossil taxa described in 2015 {{paleo-reptile-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Late Jurassic
The Late Jurassic is the third epoch of the Jurassic Period, and it spans the geologic time from 163.5 ± 1.0 to 145.0 ± 0.8 million years ago (Ma), which is preserved in Upper Jurassic strata.Owen 1987. In European lithostratigraphy, the name "Malm" indicates rocks of Late Jurassic age. In the past, ''Malm'' was also used to indicate the unit of geological time, but this usage is now discouraged to make a clear distinction between lithostratigraphic and geochronologic/chronostratigraphic units. Subdivisions The Late Jurassic is divided into three ages, which correspond with the three (faunal) stages of Upper Jurassic rock: Paleogeography During the Late Jurassic Epoch, Pangaea broke up into two supercontinents, Laurasia to the north, and Gondwana to the south. The result of this break-up was the spawning of the Atlantic Ocean. However, at this time, the Atlantic Ocean was relatively narrow. Life forms of the epoch This epoch is well known for many famous types of dinosau ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prehistoric Reptile 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] |
Prehistoric Snakes
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. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boinae
The Boinae are a purported subfamily of boas found in Central and South America as well as the West Indies. In the Integrated Taxonomic Information System (ITIS), the ''Boinae'' are considered an invalid synonym of Boidae. Genera ''*) Not including the nominate subspecies.'' ) Type genus. Taxonomy The genera ''Acrantophis'' and ''Sanzinia'' were erroneously synonymized with the genus ''Boa'' by Kluge in 1991. These have now been transferred to the resurrected subfamily Sanziniinae. The genus ''Candoia ''has similarly been transferred to its own subfamily, Candoiinae. See also * List of boine species and subspecies This is a list of all extant genera, species and subspecies of the snakes of the subfamily Boinae, otherwise referred to as boines or true boas. It follows the taxonomy currently provided by ITIS, which is based on the continuing work of Roy McDia ... References Further reading * Kluge AG. 1991. Boine Snake Phylogeny and Research Cycles. Misc. Pub. Museum of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pythoninae
The Pythonidae, commonly known as pythons, are a family of nonvenomous snakes found in Africa, Asia, and Australia. Among its members are some of the largest snakes in the world. Ten genera and 42 species are currently recognized. Distribution and habitat Pythons are found in sub-Saharan Africa, Nepal, India, Bangladesh, Sri Lanka, Southeast Asia, southeastern Pakistan, southern China, the Philippines and Australia. In the United States, an introduced population of Burmese pythons, ''Python bivittatus'', has existed as an invasive species in the Everglades National Park since the late 1990s. Common names * Sinhala - පිඹුරා (''Pimbura'') * Telugu - కొండచిలువ (Kondachiluva) * Odia - ଅଜଗର (Ajagara) *Malayalam - പെരുമ്പാമ്പ് (perumpāmp) *Hindi - अजगर ('Ajgar') Conservation Many species have been hunted aggressively, which has greatly reduced the population of some, such as the Indian python, ''Python ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ungaliophiidae
Ungaliophiinae is a subfamily of booid snakes containing two genera, '' Ungaliophis'' (two species) and ''Exiliboa'' (one species). They are small constrictors that are found in Central and South America from southern Mexico to Colombia. They eat mostly lizards and frogs and are poorly studied. These snakes were formerly thought to be closely related to two other genera, '' Tropidophis'' and '' Trachyboa''; all four genera were united in the family (Tropidophiidae) based on the presence of a tracheal lung and the absence of a left lung. However, ''Ungaliophis'' and ''Exiliboa'' are now known to be more closely related to booid snakes, whereas ''Tropidophis'' and ''Trachyboa'' are known to be more closely related to the American red pipesnake ''Anilius''. Within Booidea, ''Ungaliophis'' and ''Exiliboa'' are thought to be most closely related to North American ''Charina'' and ''Lichanura ''Lichanura'', the rosy boas, are a genus of snakes in the family Boidae. They are distribu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acrochordidae
The Acrochordidae, commonly known as wart snakes, Java wart snakes, file snakes, elephant trunk snakes, or dogface snakes are a monogeneric family created for the genus ''Acrochordus''. This is a group of basal aquatic snakes found in Australia and tropical Asia. Currently, three species are recognized. Description All are entirely aquatic, lacking the broad belly-scales found in most other snakes and possessing dorsally located eyes. Their most notable feature is their skin and scales. The skin is loose and baggy, giving the impression of being several sizes too large for the snake, and the scales, rather than overlapping, are tiny pyramidal projections that led to their common names. These snakes are ambush predators, lurking at the bottom of rivers, streams and estuaries, and waiting for fish to approach, which they grip with their coils. The rough scales allow them to hold the fish despite the mucus coating. Adults grow to between 60 cm and 2.43 m in length. Geog ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tropidophiidae
The Tropidophiidae, common name dwarf boas or thunder snakes, are a family of nonvenomous snakes found from Mexico and the West Indies south to southeastern Brazil. These are small to medium-sized fossorial snakes, some with beautiful and striking color patterns. Currently, two living genera, containing 34 species, are recognized. Two other genera ('' Ungaliophis'' and ''Exiliboa'') were once considered to be tropidophiids but are now known to be more closely related to boids, and are classified in the subfamily Ungaliophiinae. There are a relatively large number of fossil snakes that have been described as tropidophiids (because their vertebrae are easy to identify), but which of these are more closely related to ''Tropidophis'' and ''Trachyboa'' and which are more closely related to ''Ungaliophis'' and ''Exiliboa'' is unknown. Description This family is confined to the neotropics, mainly in Hispaniola, Jamaica, and the Cayman Islands, with the greatest diversity being in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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