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Snout-burrower
The shovelnose frogs are the species of frogs in the genus, ''Hemisus'', the only genus in the family Hemisotidae. They are found in tropical and subtropical sub-Saharan Africa. The shovelnose frogs are moderate-sized frogs, reaching a length of . They are round-bodied, with short legs. Their heads are small and narrow, with hard, upturned noses. The shovelnose frogs are burrowing frogs, living most of their lives underground. The female digs underground while in amplexus, and lays her eggs in an underground cavity. The male leaves through the tunnel, and the female remains with the eggs. Once sufficient rain has fallen, the female burrows with her nose towards a water source, where the tadpoles will remain until metamorphosis. The tadpoles may remain out of water up to a few days. Unlike most burrowing frogs, the shovelnose frogs burrow head-first, as opposed to rear-first, hence their other common names - snout-burrowers. Some species are kept as pets. Species Family ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edward Drinker Cope
Edward Drinker Cope (July 28, 1840 – April 12, 1897) was an American zoologist, paleontologist, comparative anatomist, herpetologist, and ichthyologist. Born to a wealthy Quaker family, Cope distinguished himself as a child prodigy interested in science; he published his first scientific paper at the age of 19. Though his father tried to raise Cope as a gentleman farmer, he eventually acquiesced to his son's scientific aspirations. Cope married his cousin and had one child; the family moved from Philadelphia to Haddonfield, New Jersey, although Cope would maintain a residence and museum in Philadelphia in his later years. Cope had little formal scientific training, and he eschewed a teaching position for field work. He made regular trips to the American West, prospecting in the 1870s and 1880s, often as a member of United States Geological Survey teams. A personal feud between Cope and paleontologist Othniel Charles Marsh led to a period of intense fossil-finding competition ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fossorial
A fossorial () animal is one adapted to digging which lives primarily, but not solely, underground. Some examples are badgers, naked mole-rats, clams, meerkats, and mole salamanders, as well as many beetles, wasps, and bees. Prehistoric evidence The physical adaptation of fossoriality is widely accepted as being widespread among many prehistoric phyla and taxa, such as bacteria and early eukaryotes. Furthermore, fossoriality has evolved independently multiple times, even within a single family. Fossorial animals appeared simultaneously with the colonization of land by arthropods in the late Ordovician period (over 440 million years ago). Other notable early burrowers include ''Eocaecilia'' and possibly ''Dinilysia''. The oldest example of burrowing in synapsids, the lineage which includes modern mammals and their ancestors, is a cynodont, ''Thrinaxodon liorhinus'', found in the Karoo of South Africa, estimated to be 251 million years old. Evidence shows that this ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Olive Snout-burrower
The olive snout-burrower (''Hemisus olivaceus''), or olive shovelnose frog, is a species of frog in the family Hemisotidae, found in Democratic Republic of the Congo and possibly Uganda. Its natural habitats are subtropical or tropical moist lowland forests, swamps, freshwater marshes, and intermittent freshwater marshes. It is threatened by habitat loss Habitat destruction (also termed habitat loss and habitat reduction) is the process by which a natural habitat becomes incapable of supporting its native species. The organisms that previously inhabited the site are displaced or dead, thereby .... References Hemisus Taxonomy articles created by Polbot Amphibians described in 1963 Endemic fauna of the Democratic Republic of the Congo {{neobatrachia-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ethiopian Snout-burrower
The Ethiopian snout-burrower (''Hemisus microscaphus''), also known as the Lake Zwai snout-burrower or Lake Zwai shovelnose frog, is a species of frog in the family Hemisotidae, endemic to Ethiopia. Its natural habitats are subtropical or tropical dry forests, dry savanna, subtropical or tropical high-altitude grassland, rivers, swamps, intermittent freshwater marshes, freshwater springs, and heavily degraded former forests. It is threatened by habitat loss Habitat destruction (also termed habitat loss and habitat reduction) is the process by which a natural habitat becomes incapable of supporting its native species. The organisms that previously inhabited the site are displaced or dead, thereby .... References Hemisus Amphibians of Ethiopia Endemic fauna of Ethiopia Taxonomy articles created by Polbot Amphibians described in 1972 {{neobatrachia-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Franz Steindachner
Franz Steindachner (11 November 1834 in Vienna – 10 December 1919 in Vienna) was an Austrian Zoology, zoologist, ichthyologist, and herpetologist. He published over 200 papers on fishes and over 50 papers on reptiles and amphibians. Steindachner described hundreds of new species of fish and dozens of new amphibians and reptiles. At least seven species of reptile have been named after him. Work and career Being interested in natural history, Steindachner took up the study of fossil fishes on the recommendation of his friend Eduard Suess (1831–1914). In 1860 he was appointed to the position of director of the fish collection at the Naturhistorisches Museum, a position which had remained vacant since the death of Johann Jakob Heckel (1790–1857). (in German). Steindachner's reputation as an Ichthyology, ichthyologist grew, and in 1868 he was invited by Louis Agassiz (1807–1873) to accept a position at the Museum of Comparative Zoology at Harvard University. Steindachner took ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marbled Snout-burrower
The marbled snout-burrower (''Hemisus marmoratus'') is a species of frog in the family Hemisotidae. It is found in sub-Saharan Africa. Its natural habitats are subtropical or tropical dry forest, subtropical or tropical moist lowland forest, dry savanna, moist savanna, subtropical or tropical moist shrubland, subtropical or tropical high-altitude grassland, swamps, freshwater lakes, intermittent freshwater lakes, freshwater marshes, intermittent freshwater marshes, arable land, plantations, seasonally flooded agricultural land, and canal Canals or artificial waterways are waterways or engineered channels built for drainage management (e.g. flood control and irrigation) or for conveyancing water transport vehicles (e.g. water taxi). They carry free, calm surface flow un ...s and ditches. It is also called the mottled shovelnose frog and marbled shovelnose frog. References Hemisus Taxonomy articles created by Polbot Amphibians described in 1854 Taxa named by Wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spotted Snout-burrower
The spotted snout-burrower (''Hemisus guttatus''), or spotted shovelnose frog, is a species of frog in the family Hemisotidae, found in South Africa and possibly Eswatini. Its natural habitats are dry savanna, moist savanna, temperate shrubland, temperate grassland, rivers, intermittent rivers, swamps, intermittent freshwater lakes, intermittent freshwater marshes, and canals and ditches. It is threatened by habitat loss Habitat destruction (also termed habitat loss and habitat reduction) is the process by which a natural habitat becomes incapable of supporting its native species. The organisms that previously inhabited the site are displaced or dead, thereby .... Sources Hemisus Amphibians of South Africa Amphibians described in 1842 Taxonomy articles created by Polbot {{neobatrachia-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guinea Snout-burrower
The Guinea snout-burrower (''Hemisus guineensis''), or Guinea shovelnose frog, is a species of frog in the family Hemisotidae found in sub-Saharan Africa. Its natural habitats are subtropical or tropical moist lowland forests, dry savanna, moist savanna, subtropical or tropical dry shrubland, subtropical or tropical dry lowland grassland, intermittent freshwater marshes, heavily degraded former forests, ponds, and canal Canals or artificial waterways are waterways or engineered channels built for drainage management (e.g. flood control and irrigation) or for conveyancing water transport vehicles (e.g. water taxi). They carry free, calm surface flow un ...s and ditches. References Hemisus Amphibians described in 1865 Taxonomy articles created by Polbot {{neobatrachia-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Raymond Ferdinand Laurent
Raymond Ferdinand Louis-Philippe Laurent (16 May 1917 – 3 February 2005) was a Belgian herpetologist, who specialized in African and South American amphibians and reptiles. He published more than 200 scientific articles and book chapters. Several species have been named after him, most recently '' Phymaturus laurenti'' in 2010. Additional species of reptiles named in his honor include ''Chironius laurenti'', '' Liolaemus laurenti'', and ''Mehelya laurenti ''Mehelya'' is a genus name of colubrid snakes from Africa. Some species formerly assigned to the genus ''Mehelya'' are now found in the genera ''Gonionotophis'', ''Gracililima'', or ''Limaformosa''. They are collectively called file snakes due ...''.Beolens, Bo; Watkins, Michael; Grayson, Michael (2011). ''The Eponym Dictionary of Reptiles''. Baltimore: Johns Hopkins University Press. xiii + 296 pp. . ("Laurent", p. 152). References Further reading * ''(First page freely available online, remainder available to subscribe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Masiliwa Snout-burrower
The Masiliwa snout-burrower (''Hemisus brachydactylus''), or Masiliwa shovelnose frog, is a species of frog in the family Hemisotidae. It is endemic to Tanzania. Its natural habitats are dry savanna, moist savanna, and intermittent freshwater marsh A marsh is a wetland that is dominated by herbaceous rather than woody plant species.Keddy, P.A. 2010. Wetland Ecology: Principles and Conservation (2nd edition). Cambridge University Press, Cambridge, UK. 497 p Marshes can often be found at ...es. References Hemisus Amphibians of Tanzania Endemic fauna of Tanzania Taxonomy articles created by Polbot Amphibians described in 1963 {{neobatrachia-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mongu Shovelnose Frog
''Hemisus barotseensis'' is a species of frogs in the family Hemisotidae. It is endemic to western Zambia and known with certainty only from the Barotse Floodplain, along the Zambezi River. The record from the Kafue Flats is uncertain. Description Males measure and females in snout–vent length. The body is spherical with small head. The snout is tapered and has a hardened, pale tip. The arms short and muscular, with pointed fingers (the fore limbs are used in burrowing). The hind limbs are short. Skin is smooth. The dorsum and sides are translucent silvery-yellow on black background, with black mottling. Most specimens have a thin, pale vertebral stripe. The male advertisement call is a long trill. Pulses come in quadruplets, with a pulse rate of 28 per second. The dominant frequency is 4.3 kHz. The call is unique among ''Hemisus''. Habitat and conservation ''Hemisus barotseensis'' lives in floodplains in savannas. It is probably fossorial, and nests in burrows in wet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metamorphosis (biology)
Metamorphosis is a biological process by which an animal physically develops including birth or hatching, involving a conspicuous and relatively abrupt change in the animal's body structure through cell growth and differentiation. Some insects, fish, amphibians, mollusks, crustaceans, cnidarians, echinoderms, and tunicates undergo metamorphosis, which is often accompanied by a change of nutrition source or behavior. Animals can be divided into species that undergo complete metamorphosis (" holometaboly"), incomplete metamorphosis ("hemimetaboly"), or no metamorphosis (" ametaboly"). Scientific usage of the term is technically precise, and it is not applied to general aspects of cell growth, including rapid growth spurts. Generally organisms with a larva stage undergo metamorphosis, and during metamorphosis the organism loses larval characteristics. References to "metamorphosis" in mammals are imprecise and only colloquial, but historically idealist ideas of transformation an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
