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The largest living amphibian is the 1.8 m (5 ft 11 in) Chinese giant salamander (Andrias davidianus) [41] but this is a great deal smaller than the largest amphibian that ever existed—the extinct 9 m (30 ft) Prionosuchus, a crocodile-like temnospondyl dating to 270 million years ago from the middle Permian of Brazil. [42]
[66] [67] Amphibians must return to water to lay eggs; in contrast, amniote eggs have a membrane ensuring gas exchange out of water and can therefore be laid on land. Amphibians and amniotes were affected by the Carboniferous rainforest collapse (CRC), an extinction event that occurred around 307 million years ago. The sudden collapse of a ...
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D. magnicornis was the first species known from more than vertebrae, and it allowed Cope and other paleontologists to realize the nature of Diplocaulus as a bizarre long-horned "batrachian" (amphibian). [11] Much of modern knowledge on the genus is based on this species, as it outnumbers any other Diplocaulus remains by hundreds of specimens.
[162] [163] Leptodactylus mystaceus has been found to eat plants, [164] [165] and folivory occurs in Euphlyctis hexadactylus, with plants constituting 79.5% of its diet by volume. [166] Many frogs use their sticky tongues to catch prey, while others simply grab them with their mouths. [167] Adult frogs are themselves attacked by many predators.
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The many possible classifications of aquatic plants are based upon morphology. [5] One example has six groups as follows: [31] Amphiphytes: plants that are adapted to live either submerged or on land; Elodeids: stem plants that complete their entire lifecycle submerged, or with only their flowers above the waterline
The olm is capable of sensing very low concentrations of organic compounds in the water. They are better at sensing both the quantity and quality of prey by smell than related amphibians. [25] The nasal epithelium, located on the inner surface of the nasal cavity and in the Jacobson's organ, is thicker than in other amphibians. [26]