Frog
Frogs are a diverse and largely carnivorous group of short-bodied, tailless amphibians composing the order Anura (Ancient Greek an-, without + oura, tail). The oldest fossil "proto-frog" appeared in the early Triassic of Madagascar, but molecular clock dating suggests their origins may extend further back to the Permian, 265 million years ago. Frogs are widely distributed, ranging from the tropics to subarctic regions, but the greatest concentration of species diversity is found in tropical rainforests. There are approximately 4,800 recorded species, making them among the most diverse vertebrate groups.
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Famous quotes containing the word frog:
“I feel like a white granular mass of amorphous crystals—my formula appears to be isomeric with Spasmotoxin. My aurochloride precipitates into beautiful prismatic needles. My Platinochloride develops octohedron crystals,—with a fine blue florescence. My physiological action is not indifferent. One millionth of a grain injected under the skin of a frog produced instantaneous death accompanied by an orange blossom odor.”
—Lafcadio Hearn (1850–1904)
“An old pond—
a frog tumbles in—
the sound of water.”
—Matsuo Basho (1644–1694)
“A frog he would a-wooing go,
Heigh ho! says Rowley,
Whether his mother would let him or no.
With a rowley, powley, gammon and spinach,
Heigh ho! says Anthony Rowley.”
—Mother Goose (fl. 17th–18th century. A frog he would a-wooing go (l. 1–5)