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Pseudoporphyria cutanea tarda

Pseudoporphyria is a bullous photosensitivity that clinically and histologically mimics porphyria cutanea tarda. The difference is that no abnormalities in urine or serum porphyrin is noted on laboratories. Pseudoporphyria has been reported in pa ...

                                               

Pseudoporphyria cutanea tarda

                                               

Molybdenum cofactor deficiency

Molybdenum cofactor deficiency is a rare human disease in which the absence of molybdenum cofactor leads to accumulation of toxic levels of sulphite and neurological damage. Usually this leads to death within months of birth, due to the lack of a ...

                                               

Lavender (chicken plumage)

Lavender or self-blue refers to a plumage color pattern in the chicken characterized by a uniform, pale bluish grey color across all feathers. The distinctive color is caused by the action of an autosomal recessive gene, commonly designated as la ...

                                               

Solid black (chicken plumage)

Solid black plumage color refers to a plumage pattern in chickens characterized by a uniform, black color across all feathers. There are chicken breeds where the typical plumage color is black, such as Australorp, Sumatra, White-Faced Black Spani ...

                                               

Solid white (chicken plumage)

In poultry standards, solid white is coloration of plumage in chickens characterized by a uniform pure white color across all feathers, which is not generally associated with depigmentation in any other part of the body. Color is an essential fea ...

                                               

Carmine (color)

Carmine is the general term for some deep red colours that are very slightly purplish but are generally slightly closer to red than the colour crimson is. Some rubies are coloured the colour shown below as rich carmine. The deep dark red color sh ...

                                               

Chestnut (color)

Chestnut is a colour, a medium reddish shade of brown, and is named after the nut of the chestnut tree. An alternate name for the colour is badious. Indian Red is a similar but separate and different color chestnut. Chestnut is also a very dark t ...

                                               

Cinereous

Cinereous is a colour, meaning ashy grey in appearance, either consisting of or resembling ashes, or a grey colour tinged with coppery brown. It is derived from the Latin cinereus, from cinis. The first recorded use of black as a color name in En ...

                                               

Fulvous

Fulvous is a colour, sometimes described as dull orange, brownish-yellow or tawny, it can also be likened to a variation of buff, beige or butterscotch. As an adjective it is used in the names of many species of birds, and occasionally other anim ...

                                               

Ivory (color)

Ivory is an off-white color that resembles ivory, the material from which the teeth and tusks of animals is made. It has a very slight tint of yellow. The first recorded use of ivory, as a color name in English in 1385. The color "ivory" was incl ...

                                               

Rufous

Rufous is a colour that may be described as reddish-brown or brownish-red, as of rust or oxidised iron. The first recorded use of rufous as a colour name in English was in 1782. However, the colour is also recorded earlier in 1527 as a diagnostic ...

                                               

Straw (colour)

Straw is a colour, a tone of pale yellow, the colour of straw. The Latin word stramineus, with the same meaning, is often used in describing nature. The first recorded use of straw as a colour name in English in 1589.

                                               

Arizonerpeton

Arizonerpeton is an extinct genus of nectridean lepospondyl. It contains a single species, Arizonerpeton wellsi. It lived in what is now the Swisshelm Mountains of modern-day Arizona, United States. This locality belongs to the Black Prince Limes ...

                                               

Benthosphenus

Benthosphenus is an extinct genus of prehistoric amphibian. Type specimen: PIN 3785/1. Its type locality is Russky Island, which is in a Smithian marine horizon in the Russian Federation. Age range: 251.3 to 247.2 Ma. Distribution: found only at ...

                                               

Bulgosuchus

Bulgosuchus is an extinct genus of prehistoric amphibians, known from an incomplete mandible and a femur recovered from the Bulgo Sandstone at Long Reef in Sydney, Australia. The mandible is estimated to have been at least one metre long.

                                               

Dutuitosaurus

Dutuitosaurus is a genus of metoposaurids, a group of amphibians that lived during the Late Triassic period. Dutuitosaurus was discovered in the early 1960s in Morocco and is known from the lower t5 units of the Timezgadiouine Formation exposures ...

                                               

Enneabatrachus

Enneabatrachus is an extinct genus of prehistoric frogs known from the late Jurassic Morrison Formation. It is represented by a single species, Enneabatrachus hechti, whose remains have been recovered from stratigraphic zone 5. One specimen has b ...

                                               

Galverpeton

Galverpeton is an extinct genus of prehistoric salamander. It lived during the Barremian-Aptian stages in the Early Cretaceous, in what is now Western Europe. The type species, Galverpeton ibericum, was described by Estes and Sanchiz in 1982. It ...

                                               

Hapsidopareion

Hapsidopareion was named in 1973 by American paleontologist Eleanor Daly based on material collected from the early Permian South Grandfield locality in southwestern Oklahoma. The genus name is given for the Greek hapsido - arch and - pareion che ...

                                               

Keratobrachyops

Keratobrachyops is an extinct genus of trematosaurian temnospondyl. It had been thought to be a basal chigutisaurid but is now thought to be a basal brachyopomorph closely related to the genus Bothriceps, and may even be a synonym of it.

                                               

Kokartus

Kokartus is an extinct genus of prehistoric salamander from the Middle Jurassic Balabansai Svita of Kyrgyzstan. The lack of clear lines of stopping the growth rings in the long bones suggests that the animals lived in conditions of stable local c ...

                                               

Llistrofus

Llistrofus was described by Canadian paleontologists Robert Carroll and Pamela Gaskill in 1978. The genus name is an anagram of Fort Sill, the historic name of the Richards Spur locality from which material of Llistrofus was collected. The specie ...

                                               

Microsauria

Microsauria is an extinct order of amphibians from the late Carboniferous and early Permian periods. It is the most diverse and species-rich group of lepospondyls. Recently, Microsauria has been considered paraphyletic, as several other non-micro ...

                                               

Platycepsion

Platycepsion wilksoni is an extinct species of prehistoric amphibian, known from partial skeleton deposited in shale at the Gosford Quarry site of the Terrigal Formation in Australia.

                                               

Rachitomi

The Rachitomi were a group of extinct Palaeozoic labyrinthodont amphibians, according to an earlier classification system. They are defined by the structure of the vertebrae, having large semi-circular intercentra below the notochord and smaller ...

                                               

Rhinella loba

Rhinella loba is an extinct true toad that inhabited the South American Pampas during the late Pliocene. It is closely related to the present day Argentine toad Rhinella arenarum and represents to date the only diagnosable extinct true toad speci ...

                                               

Rhinesuchoides

Rhinesuchoides is an extinct genus of prehistoric temnospondyl in the family Rhinesuchidae. It contains two species, R. tenuiceps and R. capensis, both from the Karoo Supergroup of South Africa. The latter was formerly a species of Rhinesuchus.

                                               

Rotaurisaurus

Rotaurisaurus is an extinct genus of amphibian-grade tetrapod from the family Lapillopsidae. This genus is known only from an incomplete crushed skull and associated left jaw, together given the designation UTGD 87795. The generic name, Rotaurisa ...

                                               

Silvanerpeton

Silvanerpeton is an extinct genus of early reptiliomorph found in East Kirkton Quarry of West Lothian, Scotland, in a sequence from the Brigantian substage of the Visean. The find is important, as the quarry represents terrestrial deposits from R ...

                                               

Subcyclotosaurus

Subcyclotosaurus is an extinct genus of carnivorous prehistoric temnospondyl amphibian. It is known from a single partial skull from the Hawkesbury Sandstone formation in Australia.

                                               

Trihecaton

Trihecaton is an extinct genus of microsaur from the Late Pennsylvanian of Colorado. Known from a single species, Trihecaton howardinus, this genus is distinctive compared to other microsaurs due to possessing a number of plesiomorphic features r ...

                                               

Vulcanobatrachus

Vulcanobatrachus is an extinct genus of fossil frog. The new genus which contains the single species Vulcanobatrachus mandelai found at Marydale, South Africa was recently described. The genus owes its name to the fact that fossils were recovered ...

                                               

Yarengia

Yarengia is an extinct genus of prehistoric amphibian. Accordingly, pending more complete specimens, Yarengia is treated as a trematosauroid, as Shishkin originally proposed.

                                               

Palaeotodus

Palaeotodus is an extinct genus of todies in the family Todidae. The genus has at least three species known from fossils found in west-central Europe and western North America.

                                               

Paraprefica

Paraprefica is an extinct bird belonging to the Caprimulgiformes, from the middle Eocene. Its fossil remains have been found in the major paleontological site at Messel, Germany.

                                               

Prophaethon

Prophaethon is an extinct genus of seabird that lived during the Early Eocene. It is essentially known from fairly comprehensive remains of a single individual, namely skull and some limb bones, which were recovered from the London Clay on the Is ...

                                               

Rhynchaeites

Rhynchaeites is an extinct genus of Threskiornithidae related to modern ibises and has a single named species Rhynchaeites meselensis. It lived in todays Germany during the mid-Eocene and its remains were found in the famous Messel pit. However, ...

                                               

Abavornis

Abavornis is the name given to a genus of primitive birds from the Late Cretaceous, containing the single species A. bonaparti. It was probably a member of the Enantiornithes, but as it is only known from a single broken coracoid, which, however, ...

                                               

Lonchodytes

Lonchodytes is a Late Cretaceous genus of aquatic bird, which lived along the shores of the Western Interior Seaway. It lived probably during the Maastrichtian, 70 million years ago, and was found in Lance Creek Formation rocks in Wyoming though ...

                                               

Minerva (bird)

Minerva is an extinct genus of owls in the prehistoric family Protostrigidae from the Eocene of North America. Described in 1915 by R. W. Shufeldt, some the bones of Minerva were interpreted as belonging to an edentate mammal by Alexander Wetmore ...

                                               

Neanis

Neanis is an extinct genus of bird probably related to woodpeckers and toucans. It contains at least one species, N. schucherti, N. kistneri resembles this, but it probably belongs to a distinct genus and may not be closely related. Both are know ...

                                               

Ogygoptynx

Ogygoptynx or Ogygoptyngidae is an extinct genus of owl from the Paleocene. Dated to the late Paleocene, this is the earliest known owl fossil, with a single species assigned to the taxon: Ogygoptynx wetmorei.

                                               

Palaeotringa

Palaeotringa is a prehistoric bird genus that was discovered by O. C. Marsh during the late 19th century American bone wars. Its remains were found in the controversial Hornerstown Formation of New Jersey which straddles the Cretaceous-Paleocene ...

                                               

San Clemente wren

The San Clemente wren was a subspecies of Bewicks wren. It was mainly distributed on San Clemente Island, off the southern coast of California. The San Clemente wren is extinct, with the last sighting in 1941.

                                               

Lord Howe boobook

The Lord Howe boobook, also known as the Lord Howe morepork, was a bird in the true owl family endemic to Lord Howe Island in the Tasman Sea, part of New South Wales, Australia. It is an extinct and little-known subspecies of the Southern boobook.

                                               

Lord Howe fantail

The Lord Howe fantail, also known as the Lord Howe Island fantail or fawn-breasted fantail, was a small bird in the fantail family, Rhipiduridae. It is an extinct subspecies of the New Zealand fantail. It was endemic to Lord Howe Island in the Ta ...

                                               

Lord Howe parakeet

The Lord Howe parakeet, also known as the Lord Howe red-fronted parakeet, is an extinct parrot endemic to Lord Howe Island in the Tasman Sea, part of New South Wales, Australia. It was described as full species by Tommaso Salvadori in 1891, but s ...

                                               

Lord Howe thrush

The Lord Howe thrush, also known as vinous-tinted thrush or vinous-tinted blackbird, is an extinct subspecies of the island thrush. It was endemic to Lord Howe Island, an Australian island in the Tasman Sea, where it was also called the doctor bi ...

                                               

Norfolk thrush

The Norfolk thrush, also known as the grey-headed blackbird or guava bird, was a bird in the thrush family endemic to Norfolk Island, an Australian territory in the Tasman Sea. It is the extinct nominate subspecies of the island thrush.