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Amphibian

Amphibians (class Amphibia) are a taxon of animals that include all tetrapods (four-legged vertebrates) that do not have amniotic eggs. Amphibians (from Greek αμφις "both" and βιος "life") generally spend part of their time on land, but they do not have the adaptations to an entirely terrestrial existence found in most other modern tetrapods (amniotes). more...

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There are about 5,700 living species of amphibians. The study of amphibians and reptiles is known as herpetology. The fear of amphibians and reptiles is known as herpetophobia.

History of amphibians

Amphibians developed with the characteristics of pharyngeal slits/gills, a dorsal nerve cord, a notochord, and a post-anal tail at different stages of their life. They have persisted since the dawn of tetrapods 390 million years ago in the Devonian period, when they were the first four-legged animals to develop lungs. During the following Carboniferous period they also developed the ability to walk on land to avoid aquatic competition and predation while allowing them to travel from water source to water source. As a group they maintained the status of the dominant animal for nearly 75 million years. Throughout their history they have ranged in size from the 3 foot long Devonian Ichthyostega, to the slightly larger 5 foot long Permian Eryops, and down to the tiny Brachycephalus didactylus (Brazilian Gold Frog) and Eleutherodactylus iberia from Cuba, with a total length of 9.6-9.8 millimeters. Amphibians have mastered almost every climate on earth from the hottest deserts to the frozen arctic, and have adapted to climatic change with ease.

  • Solomon Berg Martin, Biology
  • Duellman/Trueb, Biology of Amphibians

Read more at Wikipedia.org


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Vostok Amphibian Komandirskie Custom Bezel 60Min Black/Blue Polished Ublu60PolVostok Amphibian Komandirskie Custom Bezel 60Min Black/Blue Polished Ublu60Pol $45.00 Smith & Wesson Men's Amphibian Commando Watch. Black stainless casing. Black facSmith & Wesson Men's Amphibian Commando Watch. Black stainless casing. Black fac $47.53
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Smith & Wesson Amphibian Commando WatchSmith & Wesson Amphibian Commando Watch $62.18 List price:  Previous Price $70.00 New Smith & Wesson Men's Amphibian Commando Sww1100New Smith & Wesson Men's Amphibian Commando Sww1100 $47.63
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Blue/Black Brushed Stainless Steel Bezel for Vostok Amphibian Komandirskie WatchBlue/Black Brushed Stainless Steel Bezel for Vostok Amphibian Komandirskie Watch $40.00 40s Girard-Perregaux 'Amphibian' Bumper Auto Military Watch Ww2-parts Or Restore40s Girard-Perregaux 'Amphibian' Bumper Auto Military Watch Ww2-parts Or Restore $99.99
Vostok Amphibian Watch Military Russian Diver Watch Kgb UssrVostok Amphibian Watch Military Russian Diver Watch Kgb Ussr $47.50 12Hr/60M Insert Knurled Edge Steel Bezel for Vostok Amphibian Komandirskie Watch12Hr/60M Insert Knurled Edge Steel Bezel for Vostok Amphibian Komandirskie Watch $26.95
Vostok Amphibian Russian Automatic Women's Watch 051463 - BlueVostok Amphibian Russian Automatic Women's Watch 051463 - Blue $62.99 Wostok Vostok Amphibian vintage Soviet wrist watch diver 200 m 18 jewels UssrWostok Vostok Amphibian vintage Soviet wrist watch diver 200 m 18 jewels Ussr $77.00
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Smith & Wesson Men's Sww-1100 Amphibian Commando Black Glowing Dial Rubber BandSmith & Wesson Men's Sww-1100 Amphibian Commando Black Glowing Dial Rubber Band $66.47 Vostok Amphibian Komandirskie Custom Bezel 60Min/12Hr Combo Polished Us1260PolVostok Amphibian Komandirskie Custom Bezel 60Min/12Hr Combo Polished Us1260Pol $28.95
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Smith & Wesson Men's Amphibian Commando Sww-1100 Black stainless casing. Black fSmith & Wesson Men's Amphibian Commando Sww-1100 Black stainless casing. Black f $50.11 Smith & Wesson Amphibian Commando Black Glowing Dial Watch Rubber Strap 46mmSmith & Wesson Amphibian Commando Black Glowing Dial Watch Rubber Strap 46mm $63.00
New listing
		Vostok Amphibian Neptune Black Silicone Strap Pepsi Russian Diver WatchNew listing Vostok Amphibian Neptune Black Silicone Strap Pepsi Russian Diver Watch $100.00 Vintage Vostok Amphibian Watch Russian dive watch Manual wind runsVintage Vostok Amphibian Watch Russian dive watch Manual wind runs $22.00
Smith & Wesson 46mm Amphibian Commando 46mm Black Glowing Dial Watch Sww-1100Smith & Wesson 46mm Amphibian Commando 46mm Black Glowing Dial Watch Sww-1100 $40.00 Vostok Amphibian Russian Automatic Women's Watch 051230 - WhiteVostok Amphibian Russian Automatic Women's Watch 051230 - White $62.99
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Diver Watch Strap Band 22Mm Silicone Rubber Black Vostok Amphibian Custom FitDiver Watch Strap Band 22Mm Silicone Rubber Black Vostok Amphibian Custom Fit $22.95 60M Blu/Blk+Red Matte Bezel for Vostok Amphibian Komandirskie Watch 3860Brmt60M Blu/Blk+Red Matte Bezel for Vostok Amphibian Komandirskie Watch 3860Brmt $24.95
Silver/White Vostok Amphibian Komandirskie Custom Paddle Watch HandsSilver/White Vostok Amphibian Komandirskie Custom Paddle Watch Hands $21.99 *Us Seller* Soviet Diver Watch, Amphibian, Antimagnetic Vostok 70s #1231*Us Seller* Soviet Diver Watch, Amphibian, Antimagnetic Vostok 70s #1231 $95.00
Vostok Amphibian 120509 Military Russian Diver Wr 200Vostok Amphibian 120509 Military Russian Diver Wr 200 $85.00 Bezel For Vostok Military Auto Or Amphibian Watch NewBezel For Vostok Military Auto Or Amphibian Watch New $8.50
Campco Smith & Wesson Sww-1100 Amphibian Commando WatchCampco Smith & Wesson Sww-1100 Amphibian Commando Watch $50.50 *Us Seller* Soviet Vostok WindUp Watch, Amphibian, Antimagnetic 1980s #1034*Us Seller* Soviet Vostok WindUp Watch, Amphibian, Antimagnetic 1980s #1034 $69.00
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Diver Watch Strap Band 22Mm Silicone Rubber Orange Custom Fit Vostok AmphibianDiver Watch Strap Band 22Mm Silicone Rubber Orange Custom Fit Vostok Amphibian $22.95 Vostok Amphibian 1967 Genuine Watch Strap Band 22 mm Limited Edition 190465Vostok Amphibian 1967 Genuine Watch Strap Band 22 mm Limited Edition 190465 $80.00
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Diver Watch Strap Band 22Mm Genuine Rubber Black Vostok Amphibian Custom FitDiver Watch Strap Band 22Mm Genuine Rubber Black Vostok Amphibian Custom Fit $34.95 Gold Mirror Polished Vostok Amphibian Komandirskie Custom Steel BezelGold Mirror Polished Vostok Amphibian Komandirskie Custom Steel Bezel $40.00
Vostok Amphibian Watch Military RussianVostok Amphibian Watch Military Russian $25.00 Russian Military Wrist Watch Vostok Early Amphibian Scuba Diver Style WaffleRussian Military Wrist Watch Vostok Early Amphibian Scuba Diver Style Waffle $59.99
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Mens Russia Amphibian 200m Colorful Ship Dial 17J Ussr Diver Watch Retro CompassMens Russia Amphibian 200m Colorful Ship Dial 17J Ussr Diver Watch Retro Compass $99.99 12 Hour Insert Knurled Edge Steel Bezel for Vostok Amphibian Komandirskie Watch12 Hour Insert Knurled Edge Steel Bezel for Vostok Amphibian Komandirskie Watch $27.95
*Us Seller* Soviet Diver Watch, Amphibian, Antimagnetic Vostok 70s 2214 #1242*Us Seller* Soviet Diver Watch, Amphibian, Antimagnetic Vostok 70s 2214 #1242 $89.00 Vostok Amphibian Komandirskie Custom Bezel Blk-Gold/Copper Dash Polished UgblkpoVostok Amphibian Komandirskie Custom Bezel Blk-Gold/Copper Dash Polished Ugblkpo $25.95
Wwii era Parker Amphibian mil typ wristwatchWwii era Parker Amphibian mil typ wristwatch $44.95 Smith & Wesson Sww-1100 Black Stainless Men's Amphibian Commando WatchSmith & Wesson Sww-1100 Black Stainless Men's Amphibian Commando Watch $52.50 List price:  Previous Price $68.78
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Prices current as of last update, 07/18/19 4:35pm.

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