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Colubrid Snakes
Colubridae (, commonly known as colubrids , from , 'snake') is a family of snakes. With 249 genera, it is the largest snake family. The earliest fossil species of the family date back to the Late Eocene epoch, with earlier origins suspected. Colubrid snakes are found on every continent except Antarctica. Description Colubrids are a very diverse group of snakes. They can exhibit many different body styles, body sizes, colors, and patterns. They can also live in many different types of habitats including aquatic, terrestrial, semi-arboreal, arboreal, desert, mountainous forests, semi-fossorial, and brackish waters. A primarily shy and harmless group of snakes, the vast majority of colubrids are not venomous, nor do most colubrids produce venom that is medically significant to mammals. However, the bites of some can escalate quickly to emergency situations. Furthermore, within the Colubridae, the South African boomslang and twig snakes, as well as the Asian keelback snakes (''Rhabdo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Late Eocene
The Priabonian is, in the International Commission on Stratigraphy, ICS's geologic timescale, the latest age (geology), age or the upper stage (stratigraphy), stage of the Eocene epoch (geology), Epoch or series (stratigraphy), Series. It spans the time between . The Priabonian is preceded by the Bartonian and is followed by the Rupelian, the lowest stage of the Oligocene. ''Priabona florissantius, Priabona'', an extinct dipteran of Pipunculidae family, is named after Priabonian, the age of deposits from which this insect is known. History and naming The Priabonian Stage was introduced in scientific literature by Ernest Munier-Chalmas and Albert de Lapparent in 1893. The stage is named after the small hamlet of Priabona (Monte di Malo), Priabona in the community of Monte di Malo, in the Veneto region of northern Italy. Stratigraphic definition The base of the Priabonian Stage is at the first appearance datum, first appearance of calcareous nannoplankton species ''Chiasmolithus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Colubrinae
The Colubrinae are a subfamily of snakes within the family Colubridae. It includes numerous genus, genera, and although Taxonomy (biology), taxonomic sources often disagree on the exact number, the Reptile Database lists 717 species in 92 genera as of September 2019. It is the second largest subfamily of colubrids, after Dipsadinae. Many of the most commonly known snakes are members of this subfamily, including rat snakes, king snakes, milk snakes, vine snake (other), vine snakes, and indigo snakes. Distribution Colubrine snakes are distributed worldwide, with the highest diversity in North America, Asia, northern Africa, and the Middle East. There are relatively few species of colubrine snakes in Europe, South America, Australia, and southern Africa, and none in Madagascar, the Caribbean, or the Pacific Islands. Description Colubrine snakes are extremely Morphology (biology), morphologically and ecologically diverse. Many are terrestrial, and there are specialized foss ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coast Garter Snake
A coast (coastline, shoreline, seashore) is the land next to the sea or the line that forms the boundary between the land and the ocean or a lake. Coasts are influenced by the topography of the surrounding landscape and by aquatic erosion, such as that caused by waves. The geological composition of rock and soil dictates the type of shore that is created. Earth has about of coastline. Coasts are important zones in natural ecosystems, often home to a wide range of biodiversity. On land, they harbor ecosystems, such as freshwater or estuarine wetlands, that are important for birds and other terrestrial animals. In wave-protected areas, coasts harbor salt marshes, mangroves, and seagrasses, all of which can provide nursery habitat for finfish, shellfish, and other aquatic animals. Rocky shores are usually found along exposed coasts and provide habitat for a wide range of sessile animals (e.g. mussels, starfish, barnacles) and various kinds of seaweeds. In physical oceanography, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indian Rat Snake (Grey And Yellow)
''Ptyas mucosa'', commonly known as the Oriental rat snake, dhaman or Indian rat snake, is a common non-venomous species of colubrid snake found in parts of South and Southeast Asia. Dhamans are large snakes. Typical mature total length is around though some exceed . The record length for this species was , second only to their cousin ''Ptyas carinata'' among living colubrid snakes.Auliya, M. (2010). ''Conservation Status and Impact of Trade on the Oriental Rat Snake Ptyas mucosa in Java, Indonesia''. TRAFFIC Southeast Asia. Despite their large size, oriental ratsnakes are usually quite slender with even a specimen of commonly measuring only around in diameter. Furthermore, the average weight of ratsnakes caught in Java was around , though larger males of over (which average mildly larger of the two sexes in the species) may easily weigh over . Their color varies from pale browns in dry regions to nearly black in moist forest areas. Rat snakes are diurnal, semi-arboreal, non-v ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Natricidae
The Natricinae are a subfamily of colubroid snakes, sometimes referred to as a family (Natricidae). The subfamily comprises 36 genera. Members include many very common snake species, such as the European grass snakes, and the North American water snakes and garter snakes. Some Old World members of the subfamily are known as keelbacks, because their dorsal scales exhibit strong keeling. Natricine snakes are found in Africa, Asia, Europe, North America, and Central America as far south as Costa Rica. A single species, '' Tropidonophis mairii'', reaches Australia. Although the highest diversity is in North America, the oldest members are in Asia and Africa, suggesting an Old World origin for the group. Most species are semiaquatic and feed on fish and amphibians, although a few are semifossorial or leaf-litter snakes that feed on invertebrates. Most species are harmless to humans, but a few (e.g., '' Thamnophis sirtalis'', '' Thamnophis elegans'') are capable of inflicting bites ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sibynophis
''Sibynophis'' is a genus of nonvenomous colubrid snakes, commonly called many-toothed snakes, which together with '' Scaphiodontophis'' make up the subfamily Sibynophiinae. Species The following nine species are recognized.Wikispecies * '' Sibynophis bistrigatus'' ( Günther, 1868) – Günther's many-toothed snake * '' Sibynophis bivittatus'' ( Boulenger, 1894) – white-striped snake * '' Sibynophis chinensis'' ( Günther, 1889) – Chinese many-toothed snake * '' Sibynophis collaris'' (Gray, 1853) – common many-toothed snake * '' Sibynophis geminatus'' ( H. Boie, 1826) – Boie's many-toothed snake * '' Sibynophis melanocephalus'' (Gray, 1835) – black-headed collared snake, Malayan many-toothed snake * '' Sibynophis sagittarius'' (Cantor, 1839) – Cantor's black-headed snake * ''Sibynophis subpunctatus'' ( A.M.C. Duméril, Bibron & A. Duméril, 1854) – Duméril's black-headed snake, Jerdon's many-toothed snake * '' Sibynophis triangularis'' Taylor Taylor, Taylors or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scaphiodontophis
''Scaphiodontophis'' is a genus of snakes in the family Colubridae. www.reptile-database.org. The genus is native to Mexico, Central America, and Colombia. Species The following two species are recognized as being valid. *''Scaphiodontophis annulatus'' (A.M.C. Duméril, Bibron Gabriel Bibron (20 October 1805 – 27 March 1848) was a French zoologist and herpetologist. He was born in Paris. The son of an employee of the Museum national d'histoire naturelle, he had a good foundation in natural history and was hire ... & A.H.A. Duméril, 1854) – Guatemala neckband snake *'' Scaphiodontophis venustissimus'' (Günther, 1893) – common neckband snake References Further reading * Taylor EH, Smith HM (1943). "A Review of the American Sibynophine Snakes, with the Proposal of a New Genus". ''University of Kansas Science Bulletin'' 29: 301–337. (''Scaphiodontophis'', new genus, pp. 302–303). Scaphiodontophis Snake genera {{Colubrid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Colubroelaps
Nguyenvansang's snake (''Colubroelaps nguyenvansangi'' ) is a species of snake in the family Colubridae. The species is endemic to Vietnam. Etymology The specific name, ''nguyenvansangi'', is in honor of Vietnamese herpetologist Nguyen Van Sang.Beolens, Bo; Watkins, Michael; Grayson, Michael (2011). ''The Eponym Dictionary of Reptiles''. Baltimore: Johns Hopkins University Press. xiii + 296 pp. . (''Colubroelaps nguyenvansangi'', p. 190). Taxonomy As of 2019, the genus ''Colubroelaps'' is monotypic, containing the sole species ''C. nguyenvansangi''. Geographic range ''C. nguyenvansangi'' is found in southern Vietnam, in Bình Phước Province and Lâm Đồng Province.. www.reptile-database.org. Description ''C. nguyenvansangi'' may attain a total length of , which includes a tail about long. The head is small, roundish, and short, and is not distinct from the body. The body is very slender. The dorsal scales are in 15 rows at midbody. Dorsally Standard anatomical terms ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sibynophiinae
Sibynophiinae is a small subfamily of colubroid snakes, sometimes referred to as a family (Sibynophiidae). This group has also been called Scaphiodontophiinae but since the name Sibynophiinae is older, it has priority. They are commonly called hinged-teeth snakes. Sibynophiine snakes are between 30 and 100 cm in total length as adults, depending on the species. They have extremely long tails, up to half of the total length. They are non-venomous and eat mostly lizards. These snakes possess several unique features, including numerous small, spatulate, hinged maxillary teeth, a specialization that allows grasping and feeding on hard-bodied prey such as skinks, and the presence of fracture planes between caudal vertebrae that allow them to easily break parts of their tails in a fashion similar to many lizards (although they cannot regrow their tails). ''Scaphiodontophis'' are also unusual in being partial coral snake mimics: the front and sometimes the rear parts of their bodi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clade
In biology, a clade (), also known as a Monophyly, monophyletic group or natural group, is a group of organisms that is composed of a common ancestor and all of its descendants. Clades are the fundamental unit of cladistics, a modern approach to taxonomy adopted by most biological fields. The common ancestor may be an individual, a population, or a species (extinct or Extant taxon, extant). Clades are nested, one in another, as each branch in turn splits into smaller branches. These splits reflect evolutionary history as populations diverged and evolved independently. Clades are termed ''monophyletic'' (Greek: "one clan") groups. Over the last few decades, the cladistic approach has revolutionized biological classification and revealed surprising evolutionary relationships among organisms. Increasingly, taxonomists try to avoid naming Taxon, taxa that are not clades; that is, taxa that are not Monophyly, monophyletic. Some of the relationships between organisms that the molecul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atractaspis
:''Common names: burrowing vipers, burrowing asps, mole vipers, Spawls S, Branch B (1995). ''The Dangerous Snakes of Africa: Natural History, Species Directory, Venoms and Snakebite''. Ralph Curtis Books. Dubai: Oriental Press. 192 pp. . more.'' ''Atractaspis'' is a genus of venomous snakes in the family Atractaspidae, also known as the stiletto snakes. The genus is endemic to Africa and the Middle East. The genus contains 15 species that are recognized by ITIS. Others recognize as many as 21 species.. www.reptile-database.org. 23 are listed here. Common names Common names for snakes of the genus ''Atractaspis'' include burrowing vipers, burrowing asps, mole vipers, stiletto snakes, side-stabbing snakes, side-stabbers. "Side stabbing" refers to the snakes' uncommon ability to strike with the side of its head and inject venom with one protruding fang. Geographic range Species of the genus ''Atractaspis'' are found mostly in Sub-Saharan Africa, with a limited distribution in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
