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Genetic evidence and some anatomical details (such as pedicellate teeth) support the idea that frogs, salamanders, and caecilians (collectively known as lissamphibians) are each other's closest relatives. Frogs and salamanders show many similarities to dissorophoids, a group of extinct amphibians in the order Temnospondyli. Caecilians are more ...
Herpetology (from Greek ἑρπετόν herpetón, meaning "reptile" or "creeping animal") is a branch of zoology concerned with the study of amphibians (including frogs, salamanders, and caecilians (Gymnophiona)) and reptiles (including snakes, lizards, turtles, crocodilians, and tuataras).
Anacondas or water boas are a group of large boas of the genus Eunectes.They are a semiaquatic group of snakes found in tropical South America.Three to five extant and one extinct species are currently recognized, including one of the largest snakes in the world, E. murinus, the green anaconda.
Alpine Tibet hosts a limited diversity of animal species, among which snakes are common. There are only two endemic reptiles and ten endemic amphibians in the Tibetan highlands. [74] Gloydius himalayanus is perhaps the geographically highest living snake in the world, living at as high as 4,900 m (16,100 ft) in the Himalayas. [80]
• Sea snake (bottom right) Marine reptiles are reptiles which have become secondarily adapted for an aquatic or semiaquatic life in a marine environment. Only about 100 of the 12,000 extant reptile species and subspecies are classed as marine reptiles, including marine iguanas, sea snakes, sea turtles and saltwater crocodiles. [1]
Common Garter Snake. Herping is the act of searching for amphibians or reptiles. [1] [2] The term, often used by professional and amateur herpetologists, comes from the word "herp", which comes from the same Greek root as herpetology, herpet-, meaning "creeping".
Approximate world distribution of snakes. There are about 3,900 species of snakes, [46] ranging as far northward as the Arctic Circle in Scandinavia and southward through Australia. [27] Snakes can be found on every continent except Antarctica, as well as in the sea, and as high as 16,000 feet (4,900 m) in the Himalayan Mountains of Asia.
Snakes use concertina locomotion for moving slowly in tunnels, here the snake alternates in bracing parts of its body on it surrounds. Finally the caenophidian snakes use the fast and unusual method of movement known as sidewinding on sand or loose soil. The snake cycles through throwing the front part of its body in the direction of motion and ...