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Dischidodactylus
Mount Duida frogs (''Dischidodactylus'') form a genus of brachycephaloid frogs endemic to the tepuis of southern Venezuela. The scientific name is derived from the Greek ''dischidos'', meaning divided, and ''dactylos'', meaning finger or toe, in reference to the divided ungual flap (see below). Taxonomy The family in which ''Dischidodactylus'' should be placed is currently uncertain. Amphibian Species of the World currently places it in superfamily Brachycephaloidea with family incertae sedis, while AmphibiaWeb places it in Ceuthomantidae. It had been placed in subfamily Ceuthomantinae within family Craugastoridae based on morphology because no DNA sequence data was available. ''Dischidodactylus'' was considered closely related to ''Ceuthomantis'' because they share a synapomorphy (completely or almost completely divided ungual flaps) and both genera also have dorsal skin composed of small, flat, pliable (not keratinized) warts, and lack nuptial pads in adult males; they diffe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dischidodactylus Duidensis
Mount Duida frogs (''Dischidodactylus'') form a genus of brachycephaloid frogs endemic to the tepuis of southern Venezuela. The scientific name is derived from the Greek ''dischidos'', meaning divided, and ''dactylos'', meaning finger or toe, in reference to the divided ungual flap (see below). Taxonomy The family in which ''Dischidodactylus'' should be placed is currently uncertain. Amphibian Species of the World currently places it in superfamily Brachycephaloidea with family incertae sedis, while AmphibiaWeb places it in Ceuthomantidae. It had been placed in subfamily Ceuthomantinae within family Craugastoridae based on morphology because no DNA sequence data was available. ''Dischidodactylus'' was considered closely related to ''Ceuthomantis'' because they share a synapomorphy (completely or almost completely divided ungual flaps) and both genera also have dorsal skin composed of small, flat, pliable (not keratinized) warts, and lack nuptial pads in adult males; they differ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dischidodactylus
Mount Duida frogs (''Dischidodactylus'') form a genus of brachycephaloid frogs endemic to the tepuis of southern Venezuela. The scientific name is derived from the Greek ''dischidos'', meaning divided, and ''dactylos'', meaning finger or toe, in reference to the divided ungual flap (see below). Taxonomy The family in which ''Dischidodactylus'' should be placed is currently uncertain. Amphibian Species of the World currently places it in superfamily Brachycephaloidea with family incertae sedis, while AmphibiaWeb places it in Ceuthomantidae. It had been placed in subfamily Ceuthomantinae within family Craugastoridae based on morphology because no DNA sequence data was available. ''Dischidodactylus'' was considered closely related to ''Ceuthomantis'' because they share a synapomorphy (completely or almost completely divided ungual flaps) and both genera also have dorsal skin composed of small, flat, pliable (not keratinized) warts, and lack nuptial pads in adult males; they diffe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dischidodactylus Colonnelloi
''Dischidodactylus colonnelloi'' is a species of frog in the family Craugastoridae. It is endemic to Venezuela and only know from its type locality, Cerro Marahuaca, in the Amazonas State. The holotype was collected by G. Colonnello, hence the specific name ''colonnelloi''. Description ''Dischidodactylus colonnelloi'' was described based on a single specimen, the holotype, which was an adult female measuring in snout–vent length. The head is wider than long and rounded. The tympanum is inconspicuous. The fingers have lateral fringes but no webbing; the toes are one-third webbed. The dorsum is very dark gray, almost black, and dotted with many inconspicuous gray spots. The female had 11 large (diameter ) eggs. Habitat and conservation ''Dischidodactylus colonnelloi'' occurs in a high montane environment on top of the tepui at an elevation of about above sea level Height above mean sea level is a measure of a location's vertical distance (height, elevation or altitud ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ceuthomantis
''Ceuthomantis'' is a small genus of craugastorid frogs, also treated as comprising their own monogeneric family Ceuthomantidae. They are found in the southern and eastern parts of the Guiana Highlands in Venezuela, Guyana, and Brazil. The generic name is derived from the Greek noun ''mantis'', which means treefrog, and adjective ''keuthos'', which means hidden, in allusion to the hidden existence of this genus in the tepuis of the Guiana Shield. Taxonomy ''Ceuthomantis'' was first described as the only genus in its own family Ceuthomantidae, but is now merged with Pristimantinae; the oldest name for this taxon is Ceuthomantinae. The AmphibiaWeb maintains Ceuthomantidae as a monogeneric family. ''Ceuthomantis'' is closely related to '' Dischidodactylus'', with which they share a synapomorphy: completely or almost completely divided ungual flaps. Both genera also have dorsal skin composed of small, flat, pliable (not keratinized) warts, and lack nuptial pads in adult males. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ceuthomantidae
''Ceuthomantis'' is a small genus of Craugastoridae, craugastorid frogs, also treated as comprising their own monogeneric family Ceuthomantidae. They are found in the southern and eastern parts of the Guiana Highlands in Venezuela, Guyana, and Brazil. The generic name is derived from the Greek noun ''mantis'', which means treefrog, and adjective ''keuthos'', which means hidden, in allusion to the hidden existence of this genus in the tepuis of the Guiana Shield. Taxonomy ''Ceuthomantis'' was first described as the only genus in its own family Ceuthomantidae, but is now merged with Pristimantinae; the oldest name for this taxon is Ceuthomantinae. The AmphibiaWeb maintains Ceuthomantidae as a monogeneric family. ''Ceuthomantis'' is closely related to ''Dischidodactylus'', with which they share a synapomorphy: completely or almost completely divided ungual flaps. Both genera also have dorsal skin composed of small, flat, pliable (not keratinized) warts, and lack nuptial pads in adult ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ungual
An ungual (from Latin ''unguis'', i.e. ''nail'') is a highly modified distal toe bone which ends in a hoof, claw, or nail. Elephants and ungulates have ungual phalanges, as did the sauropod Sauropoda (), whose members are known as sauropods (; from '' sauro-'' + '' -pod'', 'lizard-footed'), is a clade of saurischian ('lizard-hipped') dinosaurs. Sauropods had very long necks, long tails, small heads (relative to the rest of their b ...s and horned dinosaurs. A claw is a highly modified ungual phalanx. As an adjective, ungual means ''related to nail'', as in ''periungual'' (around the nail). References External links Mammal anatomy {{animal-anatomy-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic Fauna Of Venezuela
Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can also be referred to as an ''endemism'' or, in scientific literature, as an ''endemite''. Similarly, many species found in the Western ghats of India are examples of endemism. Endemism is an important concept in conservation biology for measuring biodiversity in a particular place and evaluating the risk of extinction for species. Endemism is also of interest in evolutionary biology, because it provides clues about how changes in the environment cause species to undergo range shifts (potentially expanding their range into a larger area or becomin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphibians Of South America
Amphibians are ectothermic, anamniotic, four-limbed vertebrate animals that constitute the class Amphibia. In its broadest sense, it is a paraphyletic group encompassing all tetrapods, but excluding the amniotes (tetrapods with an amniotic membrane, such as modern reptiles, birds and mammals). All extant (living) amphibians belong to the monophyletic subclass Lissamphibia, with three living orders: Anura (frogs and toads), Urodela (salamanders), and Gymnophiona (caecilians). Evolved to be mostly semiaquatic, amphibians have adapted to inhabit a wide variety of habitats, with most species living in freshwater, wetland or terrestrial ecosystems (such as riparian woodland, fossorial and even arboreal habitats). Their life cycle typically starts out as aquatic larvae with gills known as tadpoles, but some species have developed behavioural adaptations to bypass this. Young amphibians generally undergo metamorphosis from an aquatic larval form with gills to an air-breathing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphibian Genera
Amphibians are ectothermic, anamniote, anamniotic, tetrapod, four-limbed vertebrate animals that constitute the class (biology), class Amphibia. In its broadest sense, it is a paraphyletic group encompassing all Tetrapod, tetrapods, but excluding the amniotes (tetrapods with an amniotic membrane, such as modern reptiles, birds and mammals). All extant taxon, extant (living) amphibians belong to the monophyletic subclass (biology), subclass Lissamphibia, with three living order (biology), orders: Anura (frogs and toads), Urodela (salamanders), and Gymnophiona (caecilians). Evolved to be mostly semiaquatic, amphibians have adapted to inhabit a wide variety of habitats, with most species living in freshwater ecosystem, freshwater, wetland or terrestrial ecosystems (such as riparian woodland, fossorial and even arboreal habitats). Their biological life cycle, life cycle typically starts out as aquatic animal, aquatic larvae with gills known as tadpoles, but some species have devel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Craugastoridae
Craugastoridae, commonly known as fleshbelly frogs, is a family of New World direct-developing frogs. As delineated here, following the Amphibian Species of the World, it contains 129 species. They are found from the southern United States southwards to Central and South America. Taxonomy The taxon was created by Stephen Blair Hedges, William Edward Duellman and Matthew P. Heinicke in 2008. The taxonomy of these frogs is not yet settled, and other sources may treat the subfamily Strabomantinae as a family, Strabomantidae, with correspondingly smaller Craugastoridae. The family was rearranged in 2014, and more recently in 2021. Life history With the possible exception of '' Craugastor laticeps'' that may be ovoviviparous, craugastorid frogs have direct development: no free-living tadpole stage is known; instead, eggs develop directly into small froglets. Genera Two genera are recognised in the family Craugastoridae: * '' Craugastor'' Cope, 1862 (126 species) * '' Haddadus'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dorsum (anatomy)
Standard anatomical terms of location are used to describe unambiguously the anatomy of humans and other animals. The terms, typically derived from Latin or Greek roots, describe something in its standard anatomical position. This position provides a definition of what is at the front ("anterior"), behind ("posterior") and so on. As part of defining and describing terms, the body is described through the use of anatomical planes and axes. The meaning of terms that are used can change depending on whether a vertebrate is a biped or a quadruped, due to the difference in the neuraxis, or if an invertebrate is a non-bilaterian. A non-bilaterian has no anterior or posterior surface for example but can still have a descriptor used such as proximal or distal in relation to a body part that is nearest to, or furthest from its middle. International organisations have determined vocabularies that are often used as standards for subdisciplines of anatomy. For example, '' Termi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tympanum (anatomy)
The tympanum is an external hearing structure in animals such as mammals, birds, some reptiles, some amphibians and some insects. Using sound, vertebrates and many insects are capable of sensing their prey, identifying and locating their predators, warning other individuals, and locating potential mates and rivals by hearing the intentional or unintentional sounds they make. In general, any animal that reacts to sounds or communicates by means of sound, needs to have an auditory mechanism. This typically consists of a membrane capable of vibration known as the tympanum, an air-filled chamber and sensory organs to detect the auditory stimuli. Insects Amphibia Anura In frogs and toads, the tympanum is a large external oval shape membrane made up of nonglandular skin. It is located just behind the eye. It does not process sound waves; it simply transmits them to the inner parts of the amphibian's ear, which is protected from the entry of water and other foreign objects. A fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
