Chordate

River stingray (Potamotrygon motoro) is a species of stingrays from the order of stingrays. Distribution of river stingray River stingray is endemic to several South American river systems. It lives in Brazil in the Amazon, and although its presence has been confirmed in the rivers of South America, the details of the distribution of the species outside the Brazilian Amazon are not yet fully understood.

The blue-spotted stingray (Taeniura lymma) belongs to the superorder of stingrays, the order is caudate-shaped, a class of cartilaginous fish. Spread of blue-spotted stingray. Blue-spotted slopes are found mainly in the Indo-Western Pacific Ocean in the shallow waters of the continental shelf, ranging from temperate and tropical seas.

Snapping tree frog (Acris crepitans blanchardi) belongs to the tailless order, the amphibian class. It received a specific name in honor of the herpetologist Frank Nelson Blanchard. Until recently, this species of amphibians was considered a subspecies of Acris crepitans, but the analysis of mitochondrial and nuclear DNA showed that this is a separate species.

Toad Fowler (Anaxyrus fowleri) belongs to the family Bufonidae, a tailless order, amphibian class. External signs of the toad of Fowler. Fowler's toad is usually brown, gray or olive green with dark spots on the back, surrounded by a black outline with a strip of light shade. On each dark spot there are three or more warts.

The rocky buzzard (Buteo rufofuscus) belongs to the hawk family, a falconous order. External signs of the rock buzzard The rock buzzard has a size of about 55 cm, the wingspan is 127 - 143 cm. The rock buzzard (Buteo rufofuscus) Weight - 790 - 1370 grams. The body is dense, stocky covered with feathers in black and red.

The royal mountain snake (Lampropeltis pyromelana) belongs to the already distinctive family, the order is scaly. External signs of the royal mountain snake The body length of the royal mountain snake ranges from 0.9 to one meter. Royal mountain snake (Lampropeltis pyromelana). Head black, nose light. The very first white ring at the top of the narrowed shape.

Zuyek from the island of St. Helena (Charadrius sanctaehelenae) was first mentioned in 1638. This bird species is a national symbol and is depicted on ancient coins, flag and coat of arms of the island. Locals nicknamed the "wirebird" zoo because it has thin legs. External signs of St. Helena's zuyk Zuyek from St. Helena has a body length of 15 cm.

Philippine or Mindor crocodile (Crocodylus mindorensis) was first discovered in 1935 by Carl Schmidt. External signs of a Filipino crocodile Philippine crocodile is a relatively small species of freshwater crocodiles. It has a relatively wide front of the muzzle and heavy armor on its back.

Madagascar short-winged Buzzard (Buteo brachypterus) belongs to the order Falconiformes. External signs of the Madagascar short-winged buzzard Madagascar short-winged buzzard is a medium-sized bird of prey about 51 cm with a compact body. Its silhouette is the same as that of other species of buzzards living in Europe or Africa.

Piebald harrier (Circus melanoleucos) is a representative of the order Falconiformes. External signs of pinto moon Piebald has a body size of 49 cm, wingspan: from 103 to 116 cm. Weight reaches 254 - 455 g. The silhouette of a bird of prey is distinguished by long wings, long legs and a long tail. The plumage of the plumage of the female and male is different, but the size of the female is approximately 10% larger and heavier.

The red-shouldered hawk (Buteo lineatus) belongs to the order Falconiformes. External signs of the red-shouldered hawk The red-shouldered hawk is a large, wide-winged bird of prey. The tail is relatively long. Females are larger than males. Females weigh an average of 700 grams and a body length of 48 - 61 cm. And males weigh an average of 550 grams and reach a length of 43 to 58 cm.

Family: Elipidae (Aspidae) Coral aspid (Micrurus corallinus) belongs to the family Aspidae (Elipidae), a squamous order. External signs of a coral aspid Coral aspid (Micrurus corallinus) Coral aspid is a small snake with a body length of 60-70 cm. The head is small, dull in shape. The tail is about ten centimeters long.

The Congolese snake-eater (Circaetus spectabilis) belongs to the order Falconiformes. Eutriorchis of Madagascar. Recent studies based on DNA analysis have thinned the systematic identity of the species and placed in the genus Circaetus. External signs of the Congolese snake-eater The Congolese snake-eater is a small bird of prey.

A paradoxical frog is often called a Guiana water toad, a paradoxical toad, or a harlequin frog. This name is consistent with the appearance of the frog: its hind limbs, decorated with dark brown or black transverse stripes. Many zoologists attribute the paradoxical frog to the family of tree frogs by the presence of a thumb that can be opposed to other fingers.

Asia Minor Newts live in Syria, Israel, Asia Minor, Iraq, Georgia, the Caucasus, Turkey, Russia, Lebanon. They are found at altitudes from 600 to 2750 meters. Asia Minor Tritons are the most beautiful representatives of the genus Triturus. During the breeding season, males resemble dragons from fairy tales with their bright outfit.

Alpine newts live in Poland, Belgium, Greece, Denmark, Holland, Albania, Italy, Austria, Bulgaria, Bosnia and Herzegovina, Belarus, Croatia, Luxembourg, Germany, Spain, France, the Czech Republic, the Netherlands, Macedonia, Slovakia, Slovenia, Romania , Yugoslavia and Ukraine. Alpine newt is considered one of the most beautiful subspecies due to its amazing color.

The Semirechye frog-tooth, aka Chinese, Semirechye and Central Asian salamander, is the largest among Russian newts. These frogs live in the Tien Shan, China and Kazakhstan, where they are found in such rivers as Chizhe, Karasu, Karaaryk, Kora, Oysaz and Koksu. Description of Semirechye frog. His skin is slippery and moist, but there is no mucus on the surface of the skin.

Pipa Corvalho, she is the Brazilian dwarf pipa - a frog that does not see well, but her sensitive legs help her perceive the world. This species of amphibians lives in the north of South America. It can be found in the mountains at an altitude of up to 1000 meters. In the countries where Pipa Corvalho is found, the most serious insult for a woman is “Senora Pipita”.

Mantella Bernhard is an active and agile frog native to Madagascar. The habitat of these amphibians is rainforests in which there is a thick layer of fallen foliage. These frogs are poisonous. Appearance of the Bernhard mantella. The length of the frog's body is 19–20 millimeters; females are larger than males.

The Vietnamese mountain toad, also called the helmet-head, lives in Vietnam, Kampuchea and Thailand. Helmet-headed toads are a rare and poorly studied species, they are listed in the Red Book of Vietnam. Amphibians are found at an altitude of 1300 meters above the ground. They live in primary mountain forests with dense vegetation and numerous streams.

People used to be afraid of gray toads or common frogs because they have an unpleasant appearance and release toxic substances from the skin. But today, gardeners have changed their minds about gray toads, they value them highly and protect them as their allies. Description of the gray toad. The body length of the gray toad reaches 20 centimeters.

Malay or black toad is a very hardy amphibian, therefore it is able to survive both in the wild and in captivity. It is also called Indian, black-backed and prickly Asian toad, amphibian lives in Southeast Asia: Vietnam, China, Laos and India. In the mid-twentieth century, these toads were brought to the island of Bali, where they took root and began to breed well.

The reed toad rightfully bears the title of the loudest among frogs, because during the mating season, males make sounds with a frequency of more than 1,500 Hertz. These amphibians live in Russia, Ukraine, Belarus, the Czech Republic, Sweden, Switzerland, Spain, Poland, Portugal, Lithuania, Latvia, Luxembourg, the Netherlands, France, Ireland, Germany and Denmark.

Gray toads or common toads live in Russia, the Urals, the North Caucasus, Europe, the Baltic States, Korea, Japan and China. Gray toads live in dry places: steppes, forest-steppes, parks and gardens. They can climb mountains to a height of 3000 meters. The permanent habitat of common toads is land, and they enter the water only for the purpose of reproduction.

The midwife frog received such an interesting name due to the special behavior of the male. After mating, the father winds slippery cords with eggs around his hips and wears them until larvae appear. Description of midwife frog An adult reaches 4-5 centimeters in length and weighs 9-10 grams.

The Mongolian toad lives in Mongolia, Northern China, Korea, Pakistan, Tibet, Southern Buryatia, Irkutsk, Amur, Chita regions and Khabarovsk Territory. In Transbaikalia, they are found at an altitude of more than 1000 meters, in Mongolia they can climb to a height of 1800 meters, and in Tibet up to 4000 meters. Mongolian toads are also called Siberian sand toads and Reid toads.

The tiger salamander, also called the tiger ambistoma or the eastern tiger salamander, lives in the USA, Canada and northern Mexico. Scientists distinguish 8 subspecies of tiger ambistos. Description of the tiger salamander The tiger salamander is the largest representative of the family, its body length reaches 30 cm, with most of it falling on the tail.

Short-headed ambistomes, also called Texas salamanders, live in North America: Nebraska, Missouri, and Ohio. The northern part of the range captures Michigan, and southern Tennessee and Kentucky. Appearance of a short-headed ambistoma The body of the Texas salamander is stocky and large, the tail is long, its cross section has a rounded shape.

In the genus of frogs, there are 2 species that have a narrow habitat and are found in East and Central Asia. Species differ in the number of transverse grooves on the sides of the body and the length of the rows of palatine teeth. There is one species in the Red Book - the Semirechye frog-tooth. Semirechenskiy frog-toot The species was named due to the similarity of the arrangement of teeth with the opener teeth of frogs.

American Proteus is one of two genera of the Proteus family belonging to the neotenic caudate amphibians. Representatives of this genus are small. As the name implies, American proteas are inhabitants of the American continent, where they are found only in its eastern part. American proteas live in clear lakes and rivers with a sandy bottom and a small current.

Siberian beetles are tritons belonging to the beetle family. They live in a vast territory. The northern part of the range reaches Yakutia and the Urals. They were found in the tundra, almost in the Arctic Ocean. The southern part of the range affects the north of Japan, China, Korea and Mongolia. In the west, Siberian coals live from the Volga region to the Arkhangelsk region.

Proteas are an unusual family of tailed amphibians, in which there are 2 genera: Necturu live in South America, and Proteu live in Southern Europe. Some scholars believe that Proteus are the neotenic descendants of ancient salamanders who completely lost their ability to metamorphose. Neotenia is the ability of larvae to reproduce at an early stage.

Sirens are not sea creatures from ancient Greek legends at all, but a detachment of tailed amphibians. From Latin, “siren” is translated as “little lizard”. But in Russian, the name sounds masculine - sirens. All representatives of this family have an elongated serpentine body. They have only two very mild limbs, and there are no hind legs at all.

Fish snakes belong to the legless order, the amphibian family. They are common in Asia, Thailand, India, China and Malaysia. Adult individuals live on the banks of rivers, in the ground, digging to a depth of about half a meter, and in the water they instantly die. They feed on earthworms, blind snakes and shield-tailed snakes.

Amphiums are a family of animals of the order of caudate amphibians, which includes one genus and three families. Amphiums live in the marshes of the United States: from the Florida Peninsula to Virginia. This is one of the most unusual amphibians, which in appearance strongly resemble eels, but they have underdeveloped paws that they do not use.

The creeping salamander, which also has a second name - the forest salamander - is a monotypic genus in which only a single species is distinguished. These amphibians are in the IUCN Red List. Crawling salamanders live only in the Red Hills area on the coast of Alabama. This coastal plain is a narrow strip with a length of approximately 97 kilometers and 40 kilometers wide.

Glass frogs: all of their species belong to the family of tailless amphibians. The photo shows that the skin on the stomach of the glass frog is transparent, through it the heart, liver and stomach are visible, it is because of this that the family got its name. The first mention of glass frogs appeared in 1872, when the first specimens were discovered in Ecuador.

Brook salamander is a genus of salamander in which 10 species are distinguished. All of them live only in North America. The habitat of brook salamander extends from Canada to northern Mexico. Brook salamanders lay eggs in spring and winter. Larvae develop for quite a long time - over 2-3 years, metamorphosis occurs in spring and winter.

The Spur frog got its name due to the horn claws, on the fingers of its forepaws or “spurs”. Spur frogs belong to the Pipa family, a group of tailless amphibians. There are 5 species of Spur frogs, which differ in body color. These frogs are ideal for keeping in aquariums.

Two species are distinguished in the genus of Far Eastern tritons: Ussuri clawed newts and Japanese newts. These newts are called pulmonary, because they have no lungs and are adapted to breathing without this organ. Ussuri clawed newt This is a hidden and rare species. The Ussuri triton has absolutely no lungs, and breathing is carried out due to the mucous membrane of the oral cavity and through the skin.

Narrow-chested tree frogs, also called micro-tree frogs, live in much of Southeast Asia, Africa, America, Australia and the Malay Archipelago. Narrow-winged tree frogs lifestyle. They are found in the tropics around the globe, leading a land or tree lifestyle. Certain species have learned to survive in an arid climate, as a result of which the tadpole stage has disappeared: the females lay their eggs in moist soil, in which metamorphosis occurs, resulting in a shorter development period.

The red-eyed tree frog lives in South and Central America: in Guatemala, Mexico, Honduras, El Salvador, Costa Rica, Colombia, Nicaragua, Panama and Colombia. The species was described by Cope in 1862. The Latin name of the red-eyed tree frog is translated as "a beautiful tree nymph." Description of the red-eyed tree frog Females are larger than males: the body length of females reaches 7.5 centimeters, and males - no more than 5.6 centimeters.

Horned Garlic Maker - An amphibian living in Southeast Asia, is a camouflage professional. The genus of horned scallops includes 20 species, the most famous of which is the real horned scampi, it is also a mountain scythe. It is these amphibians that have received the greatest distribution among domestic terrarium workers.

Far Eastern tree frog is an amphibian belonging to the tree frog family. The second name of these amphibians is East Siberian tree frogs. Foreign authors often consider Far Eastern tree frogs a subspecies of common tree frogs, but there are significant morphological and biochemical differences between these species.

Marble ambistome is an amphibian common in the eastern United States. In the south, the habitat of marble ambistomes is limited to Florida, and in the north to New England. And two individuals were found in New Hampshire. This ambistoma has a second name - tape salamander. Appearance of Marble Ambistomes Adult marble ambistomes grow to 11 centimeters, while females are larger than males.

The goliath frog is a resident of the African continent: it lives in Equatorial Guinea and Cameroon. It is the largest frog in the world. Many frogs do not disdain dirty water, because they are often found in swamps, but goliath frogs can only live in crystal clear water with a high oxygen content.

In central and North America, unusual amphibians live, which are called ambistomes, they are representatives of the caudate order, the family of ambistomes. In English-speaking countries, mole salamanders are called ambists. These amphibians are endemic to North America: they live from Canada to Mexico and Alaska.

Crossings are tailless amphibians belonging to the family of scallops. Two types of crosses are distinguished: the spotted one, which lives in South-Western Europe, and the Caucasian cross, living in the Caucasus. The name amphibians was due to the fact that the males have a characteristic pattern in the form of an oblique cross on their backs. Unlike the garlic ladies, the crosses have a spotty inner tubercle of small, round shape.

Nosed rheobathrachus live only in Southeast Queensland, which is located in Australia. These frogs are called caring because tadpoles develop in the female’s stomach, and they are born when they are completely ready to lead an independent life. Features of the appearance of nosed rheobatrachus The length of the nosed rheobatrachus reaches 33-54 mm.

Cuban tree frog, also called gigantic tree frog, lives in Cuba, Puerto Rico, Huventud Island, Key West, Cayman Island and the Virgin Islands. Cuban tree frogs have long overcome the original boundaries of the range, today they are distributed throughout the American continent. Description of Cuban tree frogs The body length of a Cuban tree frog reaches 14 centimeters.

Underground salamander, also called cave salamander, is a monotypic species in the United States. Cave salamanders are endemic to the Missouri River. This species is included in the IUCN Red List. For the first time, underground salamanders were found in 1891 on the Ozark plateau. To date, this plateau is the only habitat found in underground salamanders.

The Australian giant tree frog is large, as its name suggests. The homeland of these tree frogs is not only Australia, the range is wider, it also captures New Guinea. Lifestyle of Australian giant tree frogs. Within the range, Australian giant tree frogs are a common species; moreover, they are often found in parks and squares.

Toads - what kind of animals. Photos of toads, a description of these tailless amphibians and the most interesting facts about toads in our article. And we will answer the question: “are toads and frogs the same animal? or still not? ” Who is a toad? Often this question is answered incorrectly, because few people know that real toads are not frogs, tree frogs or toads, similar in appearance to toads.

The crusader desert is a tailless amphibian. External signs of the crusader desert The dimensions of the crusader desert are 6.3-6.8 centimeters. This amphibian is painted mainly in dark brown tones. Crusader Desert (Notaden bennettii). Desert habitats The Crusader Desert lives in fresh swamps, ponds, temporary bodies of water formed after rain, and also in anhydrous areas of Australia.

Toad - Kihansi squirrel belongs to the order tailless, found in Tanzania. Habitat for Toad-sprayers The toad-sprayer Kihansi lived near the waterfalls of the Tanzanian river Kihansi. The area of ​​the species is extremely small for vertebrates and amounted to only 0.02 km2. This is the smallest habitat.

Frogs - a group of amphibians, which consists of a large number of species. Description and photos, as well as many interesting facts you can find in our article. To the frogs, we include all amphibians that do not have a tail, however, scientists would argue with us. Indeed, according to the scientific classification, frogs are usually called only a group of amphibians that are members of the family of real frogs.

Toad aga - a representative of the family of real toads. What will tell us a photo of a toad aga about this tailless amphibian? Is yeah really poisonous, and indeed - is it worth it to start it as a pet? These are the most famous toads of Central and South America. Aga toads are quite large, can weigh about 1 kilogram, and reach 25 centimeters in length.

Common Triton is an amphibian belonging to the family of real salamanders. What an ordinary newt looks like - look at the photo, and you will understand that this type of newts stands out among its brothers. Appearance of an ordinary triton An ordinary newt has a body length with a tail of only 7 - 11 cm and is one of the smallest among the variety of species of newts.

Rough paddock is a medium-sized frog. Such small sizes allow them to be kept in aquariums, so these frogs are loved by terrariums. Description of the appearance of the rough copepod Adults of the rough copepod reach about 4 centimeters in length. Their skin is rough, covered with small pimples.

Flame-belly newts have a bright coloration of the abdomen, hence their name came from. Their homeland is Japan and China. These newts are clearly visible labial folds. Males have no ridges on their backs; they are replaced by ridges on the ridge. No kind of fire-bellied newts can exist without water, young animals do not even have a land stage.

Crested newts live in most of Europe: in Switzerland, France, Poland, Germany, and Great Britain. They also live in Russia from the Black Sea to the Urals, in Ukraine and Belarus. Appearance of combed tritons. These tritons are rather large; they reach 18 centimeters in length. The physique is tight.

Tanzanian woods belong to the genus of African woodcocks, a group of tailless amphibians. These frogs live in the mountains of Tanzania: in Nguu, Uzambara, Rungwe and Poroto. They live on the shores of freshwater bodies of water, often they can be found on tree branches hanging over the water. Appearance of Tanzanian woods Tanzanian woods are one of the largest tree frogs in Africa: females reach 61-88 millimeters, and males are smaller - from 39 to 50 millimeters.

The warty newts of the genus Paramesotriton have tuberous skin similar to that of the toad, hence the name. The physique of these newts is dense and heavy, the head is triangular, the tail and legs are well developed. A characteristic feature is a bright belly. Warty Newts Lifestyle Warty newts live in China, Laos, and Vietnam.

American toads live in Canada and the USA. Often these toads are planted in a terrarium. Look at the photo of the American toad: perhaps this is your future pet. Want to know all the fun about him? There are 2 subspecies of American toads: these species are very similar, they differ only in size. Southern American toads living in the south of the range reach a maximum of 5 cm in length, and northern subspecies grow to 5-10 cm.

Reed toad (aka Toad-aha) is a poisonous amphibian, which is a large representative of the toad family. The description and photos of the reed toad tell us that the larger ages in size are only Blomberg's toad. On top, the toad has a gray or dark brown color with large spots of a dark shade. The upper layer of the skin is warty and very faded.

Pebble toad lives in the subtropics and tropics, giving preference to swamps and mountainous areas. Most often, these frogs are found on the steep slopes of the mountains of the Guiana Highlands, which are located in Venezuela. These mountains have a humid climate that is suitable for many unique species of animals. Features of the appearance of pebble toads The body length of adult females is 3-4 centimeters, and males are almost 2 times less, they grow to only 2.3 centimeters.

The African digging frog can be found mainly in the territories of Angola, Botswana, Kenya, the Republic of the Congo, Namibia, Zambia, Tanzania and South Africa. This frog is called a long-lived woman, as some representatives live to be 45 years old. Appearance of a digging frog. Adult African digging frogs can grow up to 25 cm on average.

Salamanders - who are they: reptiles or amphibians? What does science say about these creatures? A first look at the salamander tells us that these creatures are relatives of lizards, but hey! Do not make hasty conclusions! After all, if lizards are reptiles, then salamanders are ... These are real amphibians!

Teloderm - one of the most unusual woody amphibians that live in the Old World. They have a non-standard appearance and differ in specific behavior, which is why they are amazing. What is the peculiarity of teloderm? In hollow frogs, the body is flattened from above. In many species, the skin is covered with tubercles, ridges and spines.

The extinct animal Stegocephalus is one of the most mysterious herbivores that ever lived on earth. What is the peculiarity of stegocephals, and when did they live? About this in our article ... The source of the origin of life on the planet was water, in addition, it has supported life on land for millions of years. The most adapted creatures were amphibians, since they could live in water and also felt comfortable on land.

Ceratosaurs existed on the planet in the late Jurassic period. On the nose were sharp and strong horns. It was because of the horn of predators that they called "ceratosaurs", which translates as "horned lizards." Ceratosaurs reached large sizes, in length they grew to 6 meters, while the mass could reach up to a ton.

Mantellas are frogs whose homeland is Madagascar. The uniqueness of these frogs is that they are the smallest tailless amphibians on the planet. These frogs were first described in 1872, and A. Grandidier made a description. He attributed these frogs to poison frogs, but later identified them in the "real frogs" family.

Alleganum coxinchis or giant salamander is one of the largest species of salamander in America. Giant American salamanders are also called "revelers salamanders." It is not clear where the name came from, perhaps it is associated with the strange appearance of the animal, and the settlers thought that the salamander is a creature from hell that went out for a walk and seeks to get back.

Not so long ago, only spur frogs were kept in aquariums. These frogs are neither expensive nor whimsical. Young Spur frogs are very cute and harmless, but, growing up, they turn into large frogs, which are rather problematic to keep together with fish, only professional aquarists can cope with such work.

Paleokarharias - sharks that existed more than 150 million years ago in the ancient sea in what is now Germany. It was a Jurassic period. Paleokarharias were not too big sharks, but extremely ferocious and dangerous. Paleocarcharias. Scientists attribute these creatures to the ancient ancestors of lamnoid or wobengoobraznyh sharks.

One of the brightest and most beautiful representatives of the "croaking kingdom" is undoubtedly the blue frog. The appearance of this tropical frog is very attractive: small dots of black color are randomly scattered on a dark blue background. If the lighting is rather weak, then the tree frog seems much darker, but if there is a lot of light, then the frog seems to phosphorize.

The Syrian garlic is a frog that spends about 18 hours a day burrowing underground. It can dig deep into 25 centimeters. These frogs do not have permanent shelters; they burrow in the ground where the dawn catches them. In spring and summer, so that the Syrian garlic can bury itself in the ground, the soil moisture should not be less than 30-35%, since with the loss of 40% of the liquid of the total body weight, they die.

Viviparous toads do not show activity from December to February, because at this time there is not enough moisture. During this period, it burrows in the soil or in the cracks of the rocks. In late February, females were the first to choose their shelters, then in March-April young individuals who did not reach puberty begin to show activity, and males last appeared.

Oddly enough, the tail frog has no tail, but its body ends with a small anal tube. The maximum body size of a frog reaches 50 millimeters, but there are specimens of much smaller sizes, the body length of which reaches only 30 millimeters. The skin, as a rule, is smooth, sometimes on it there may be small warts scattered in different parts of the body.

Probably many of you rolled your children on your back. If you did not, then try. This will bring great pleasure to the child, and you will feel in your own skin how it feels to carry the child on his back. Only in this way will you be able to understand the difficulties that the Surinamese pipa suffered, which carries its future children on its back, and not just one, but just ten, forty, and in some cases a hundred and twenty.

We present to your attention another "unknown animal". This is Proteus European or Olm, the Latin names are Proteus anguinus and olm, respectively. This creature lives in a limited number of territories, prefers to live in cold lakes and streams of underground cadastral caves, located mainly in the areas of the former Yugoslavia adjacent to the sea (we are talking about the Adelsberg and Magdalen caves), as well as in the foothills of the Venetian Alps, or rather in the Vicenza region of northern Italy, where it was introduced in the mid-twentieth century.

Axolotl is the larval stage of ambistoma. Axolotl is of great interest among scientists, this is due to the fact that it is capable of reproduction without reaching an adult form. This is an amazing phenomenon, but understandable, the secret is that in axolotl, puberty occurs in childhood. It is worth noting that axolotl tissues do not respond very well to the hormone that the thyroid gland secretes.

This inhabitant of the oceans differs from all the others in that on her head there is a bone growth with jagging, which actually resembles a saw. Moreover, this growth is about a quarter of the total body length of this fish. Sawfish belongs to the family of stingrays, to be completely accurate, its biological name is the common sawfly, Latin - Pristidae.

Sharks are the most insidious and bloodthirsty fish of our planet. There are a great many species and subspecies. The heroine of this article will be a plastient. In another way, it is called a fiery shark or a corrugated shark. This species is one of the rarest in its family. Another distinctive feature of the clander is its ancient roots on Earth.

Green toad is a widespread species of toads in our country. The length of their body can reach up to 18 centimeters, but such giants are not common. As a rule, the average length of adults is 5-8 centimeters. Green toad (Pseudepidalea viridis). A green toad, like its relative, a gray toad, has a large number of tubercles in its body.

Muzzle frog is a widespread species that is part of a group of brown frogs. Marsh frogs are similar in appearance and behavior to grass frogs. In most of the range, these species live next to each other. But each individual species is of great importance in nature. Muzzle frog (Rana arvalis).

The red-bellied toad is a frog that is small in size: the length of its chalk reaches a maximum of 6 centimeters. The upper body has a nondescript color: the background is gray, and on it are a variety of dark or greenish stains and spots. But the abdomen is very bright: red or orange-red with a marbled pattern of a bluish-black hue.

Megalodon is the largest shark on Earth in the entire history of its existence. People discovered the giant teeth of this shark in ancient times. They considered them the teeth of the huge scary dragons that previously inhabited the planet. Already in the XVII century, people had a more realistic attitude to legends and tales, and some scientists have put forward the version that these huge teeth belonged to a shark that was found in the oceans millions of years ago.

Supersaurus Supersaurus, or “supercar” is a huge sauropodomorphic dinosaur. The Latin name for the species is Supersaurus vivianae. According to experts, the length of the animal reached 34 meters with a weight of about 36-40 tons, the maximum head raised 15 meters above the ground.

Protoceratops lived in the late Cretaceous period and was a herbivorous dinosaur. The name comes from Greek words and means "horned." This poultry-dinosaur dinosaur is considered the ancestor of the horned Ceratops. The remains of Protoceratops were first discovered in the Gobi Desert in 1923. Not so long ago, in Mongolia, researchers found more than a hundred skeletons of Protoceratops of different ages, as well as nests, eggs and the remains of cubs.

Mastodonosaurus is a giant vertebrate that lived in the Triassic period (about 250 million years ago). The name of the genus comes from the Latin word Mastodonsaurus. The ancestors of this amphibian are considered stegocephals. In Guildorf (Germany), remains were discovered that are part of the occipital bone and tooth.

Pteranodon (Pteranodon) - a genus of giant extinct pterosaurs that lived in North America in the Upper Cretaceous. The name comes from the Greek words πτερόν - “wing” and ἀνόδους - “toothless”. The ancient animal had a large head - about 1 meter. Pteranodon's head ended in a strong, but toothless beak.

In the usual view, frogs have a green or brown skin color. But on our planet there are also types of amphibians whose color is unusual and very bright. An example to prove this is the tomato snapper, nicknamed among terrarium lovers - a tomato frog. These amphibians are scientists belong to the order tailless, the family - narrow-chested.

The official discovery of this species of amphibians occurred in 2003, although it is known for certain that their ancestors lived about 180 million years ago. The purple frogs themselves appeared almost 134 million years ago, from which we can conclude that they survived the extinction of the dinosaurs.

On our planet, among the diverse amphibians, there is an interesting species of amphibians - worms. This legless squad is the smallest among other representatives of amphibians. Structural Features of Worms These amphibians are very similar in appearance to large worms. Thanks to the numerous ring-shaped interceptions of the body, the resemblance to the worm only intensifies.

There is a glass frog in the world. A photo of a transparent beauty and a description of her amazing lifestyle are all in our article. Glass frogs - no, no, they are not made of glass! These are the most real living representatives of the terrestrial fauna. These are amphibians, which scientists attribute to the order of tailless. The family uniting these creatures is called - glass frogs, the genus also has the same name.

Unusual animals always attract attention. The Japanese giant, or giant salamander, was no exception. What does a gigantic salamander look like? Japanese gigantic (giant) salamander A rather large amphibian, the length of which most often reaches one and a half meters. The weight of an adult salamander can reach up to 27 kilograms.

Among the representatives of amphibians, there are very unusual creatures whose appearance is very bright and memorable. These animals include the fire salamander - the caudate amphibian of the salamander family. The pioneer of this species is the scientist Karl Linney, who discovered these creatures in 1758.

Have you been to a pond or lake for a long time? Have you heard these endless croaking serenades? So the lake frog, or Pelophilax ridibundus, sings. Frog with a bright green stripe - who is she? Lake Frog If you were fishing, you probably noticed a large concentration of frogs near the shore of a lake or pond.

The carnosaurus dinosaur, which is translated from Latin as a carnivorous bull, was first discovered in 1985 in Argentina. The researchers attributed the found skeleton with skin imprints to the Late Cretaceous period, when, apparently, this predatory dinosaur inhabited South America. Appearance of a carnotaurus The carnotaurus had a kind of horns on its head.