The species of reptiles and amphibians are few and chiefly confined to the southern parts.
In fishes and amphibians the organ consists of right and left lobes, and a gall-bladder is present.
In the later Carboniferous rocks the earliest amphibians make their appearance in considerable numbers; they were all Stegocephalians (Labyrinthodonts) with long bodies, a head covered with bony plates and weak or undeveloped limbs.
Since the adoption of an aquatic mode of life by Desis and Argyroneta involves no increased facilities in getting food, and merely substitutes for ordinary terrestrial enemies fishes and crustaceans in the former case, and fishes, amphibians, and insectivorous water-insects in the latter, the supposition is justified that the change in environment is due to the unremitting persecution of Pompilidae and Ichneumonidae, which would not venture to pursue their prey beneath the water's surface.
New and unheard-of orders of amphibians, reptiles and mammals came to the surface of knowledge, revolutionizing thought, demonstrating the evolution theory, and solving some of the most important problems of descent.
A difficulty naturally arises with regard to the fact that in reptiles the occipital condyle by which the skull articulates with the vertebral column is single, although composed of three elements, whereas in amphibians and mammals the articulation is formed by a pair of condyles.
Amphibians are quite long-lived, and can afford to miss an occasional breeding season.
Some fully aquatic amphibians still possess a lateral line system.
Amphibians were the first group of vertebrates to successfully conquer land almost 400 million years ago.
Particular favorites for breeding amphibians include water crowfoot, water starwort, water forget-me-not and water mint.
dragonflyre home to native plants and hundreds of species of insects and animals including dragonflies, amphibians and water birds.
Slimy Creatures Discover how snails get around, how poison arrow frogs protect themselves and how amphibians breathe.
Next to the river, you also often find grass snakes that swim and hunt amphibians in the water.
If you put small log and rubble piles near a pond that will provide hibernation habitat for amphibians.
amphibians sand reptiles of the Shark Bay area, Western Australia.
self-replicating molecules would form, and when the first amphibians would step onto land.
urodele amphibians such as the newt can regenerate their limbs, jaws, lens, retina and large sections of the heart.
Animals of the next higher order, the amphibians of the coal measures and the Permian, were first comprehensively treated in the masterly memoirs of Christian Erich Hermann von Meyer (1801-1869) beginning in 1829, especially in his Beitrage zur Petrefactenkunde (1829-1830) and his Zur Fauna der Vorwelt (4 vols., 1845-1860).
Illustrations of this law were set forth by Cope as early as 1861 (see " Origin of Genera," reprinted in the Origin of the Fittest, pp. 95 -106) in pointing out the extraordinary parallelisms between unrelated groups of amphibians, reptiles and mammals.
Amphibians and reptiles are particularly numerous in the scuthern provinces, and among these the most remarkable are the large southern or eyed lizam~1 (Lacert a ocell ala), which sometimes attains 3 ft.
Amphibians sand reptiles of the Shark Bay area, Western Australia.
He knew where and when the first self-replicating molecules would form, and when the first amphibians would step onto land.
Urodele amphibians such as the newt can regenerate their limbs, jaws, lens, retina and large sections of the heart.
Natural prey animals for cats are rodents, birds, insects, and sometimes amphibians.
Visitors to Costa Rica will find more than 800 bird species, 2,000 unique types of butterflies, 10,000 different plant species (including more than 1,000 species of orchid), 150 different amphibians, and 220 reptile species.
Reptiles and Amphibians - If you prefer pets of a more exotic nature, you'll find plenty to peak your interest in this category.
Studying frogs, he first thought the amphibians were such good swimmers because of their long legs, but it didn't take him long to realize that it was actually their webbed feet that made frogs so graceful and quick in the water.
They include racing and hovercraft type boats as well as sharks, fantasy figures and imaginary amphibians that skim across the pool's surface at the whim of the controller.
The green amphibians are decked out in red hats and fill your computer screen with the colors of the Christmas season.
It may be explained that the Theromorpha, or Anomodontia, are those extinct reptiles so common in the early Secondary (Triassic) deposits of South Africa, some of which present a remarkable resemblance in their dentition and skeleton to mammals, while others come equally near amphibians.
Otters also eat amphibians, crayfish and the occasional bird and small mammal.
Attempts to improve the water quality in the smaller ponds may benefit amphibians.
It can also be used to clean out tanks used to keep the amphibians.
The lush growth provides a safe nursery for developing amphibians including toads, frogs and smooth newts.
No native amphibians are known and any frogs, newts or toads found have been introduced.
If you have a garden pond for newts and other amphibians, do not stock the pond with fish.
This area also allows small amphibians such as frogs and toads to enter the pond easily.
All the six native British amphibians have declining populations but most still occur on our waterways.
The most suitable bone for this is the end of a toe bone which can be quickly and easily removed from adult amphibians.
Anyone wishing to focus on systematic observations of reptiles and/or amphibians would be very welcome.
Reptiles & amphibians The Chinese alligator is the most endangered crocodilian - a survey in 1999 found just 150.
In some amphibians, such as frogs and toads, the tadpole 's tail is eventually lost by being absorbed into the body.
anuran amphibians, particularly female choice.
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