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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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60M Blu/Blk+Red Matte Bezel for Vostok Amphibian Komandirskie Watch 3860Brmt60M Blu/Blk+Red Matte Bezel for Vostok Amphibian Komandirskie Watch 3860Brmt $50.00 12 Hour Insert 38Mm Polished Bezel Vostok Amphibian Komandirskie 3812Inspol12 Hour Insert 38Mm Polished Bezel Vostok Amphibian Komandirskie 3812Inspol $35.00
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Russian Soviet Army Watch Amphibian Commander Military Award Order SubmarineRussian Soviet Army Watch Amphibian Commander Military Award Order Submarine $75.00 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 Komandirskie Custom Bezel 60Min/12Hr Combo Matte Us1260MtVostok Amphibian Komandirskie Custom Bezel 60Min/12Hr Combo Matte Us1260Mt $50.00 Smith & Wesson Black Mens Amphibian Commando Water Resistant Watch W1100Smith & Wesson Black Mens Amphibian Commando Water Resistant Watch W1100 $48.84
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Smith & Wessen amphibian commando quartz watch, 30m, 45mmSmith & Wessen amphibian commando quartz watch, 30m, 45mm $39.99 Vostok Radio Room Watch White And Red Dial Auto Amphibian 2415 110750Vostok Radio Room Watch White And Red Dial Auto Amphibian 2415 110750 $79.50
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Vintage Russian Vostok Amphibian Albatross Diver Watch Ussr *Us Seller* #1522Vintage Russian Vostok Amphibian Albatross Diver Watch Ussr *Us Seller* #1522 $99.00 White/Blue Vostok Amphibian Komandirskie Custom Watch Hands "Telum" Ph2BlwWhite/Blue Vostok Amphibian Komandirskie Custom Watch Hands "Telum" Ph2Blw $20.99
Amphibian Commando WatchAmphibian Commando Watch $59.98 Vostok Amphibian Metal Bracelet 22mm Lug widthVostok Amphibian Metal Bracelet 22mm Lug width $27.00
Vostok Amphibian Komandirskie Custom Bezel Black Pvd Us1260Blkp / With DefectsVostok Amphibian Komandirskie Custom Bezel Black Pvd Us1260Blkp / With Defects $31.95 Vostok Amphibian 420288 Vdv Automatic Wristwatch Wr 200 Fast delivery from UsaVostok Amphibian 420288 Vdv Automatic Wristwatch Wr 200 Fast delivery from Usa $79.00
Men's Wristwatch Russian Amphibian Kgb 200M Buffalo Head Nickel BandMen's Wristwatch Russian Amphibian Kgb 200M Buffalo Head Nickel Band $92.21 Was:  Previous Price $122.95 Vostok Amphibian Komandirskie Custom Bezel 60Min Black/Blue Matte Ublu60MtVostok Amphibian Komandirskie Custom Bezel 60Min Black/Blue Matte Ublu60Mt $50.00
Vostok (Boctok) Amphibian 200m 20 Atm Vintage Ussr Russian Military Men's WatchVostok (Boctok) Amphibian 200m 20 Atm Vintage Ussr Russian Military Men's Watch $84.99 Vostok amphibian watch automatic Anti shock, waterproof. AutomaticVostok amphibian watch automatic Anti shock, waterproof. Automatic $79.99 Was:  Previous Price $99.99
60Min Reduced Diameter Blue Pvd Lumed Bezel Vostok Amphibian Komandirskie 38Blup60Min Reduced Diameter Blue Pvd Lumed Bezel Vostok Amphibian Komandirskie 38Blup $32.95 Russian Mechanical Automatic Wrist Watch Vostok Amphibian Diver 420307Russian Mechanical Automatic Wrist Watch Vostok Amphibian Diver 420307 $60.00
Vostok Amphibian 350755 200m Nylon Fast delivery from UsaVostok Amphibian 350755 200m Nylon Fast delivery from Usa $75.00 Russian Soviet Army Watch Amphibian Commander Military Award Order BorderRussian Soviet Army Watch Amphibian Commander Military Award Order Border $79.00
Vostok Amphibian Operation Desert Shield Made In Ussr RussianVostok Amphibian Operation Desert Shield Made In Ussr Russian $82.00 Smith & Wesson Mens Amphibian Commando 30 m Water Resistant WatchSmith & Wesson Mens Amphibian Commando 30 m Water Resistant Watch $47.60 Was:  Previous Price $50.11
Vostok Amphibian Komandirskie Custom Bezel 60Min/12Hr Combo Polished Us1260PolVostok Amphibian Komandirskie Custom Bezel 60Min/12Hr Combo Polished Us1260Pol $50.00 Smith & Wesson Smith & Wesson Amphibian Commando Watch Glow Dial Band-BlackSmith & Wesson Smith & Wesson Amphibian Commando Watch Glow Dial Band-Black $59.45
12Hr Blue Pvd Coated Steel Bezel Vostok Amphibian Komandirskie Watch / Limited12Hr Blue Pvd Coated Steel Bezel Vostok Amphibian Komandirskie Watch / Limited $50.00 Russian Soviet Army Watch Amphibian Commander Military Award Order ArtilleryRussian Soviet Army Watch Amphibian Commander Military Award Order Artillery $75.00
Compass Insert Matte Steel Bezel Vostok Amphibian Komandirskie Watch / LimitedCompass Insert Matte Steel Bezel Vostok Amphibian Komandirskie Watch / Limited $50.00 Bostok Amphibian Mens WatchBostok Amphibian Mens Watch $75.00
Blue/White Vostok Amphibian Komandirskie Custom Paddle Watch HandsBlue/White Vostok Amphibian Komandirskie Custom Paddle Watch Hands $19.99 Vostok Amphibian Komandirskie Custom Bezel Blk-Gold/Copper Dash Matte UgblkmtVostok Amphibian Komandirskie Custom Bezel Blk-Gold/Copper Dash Matte Ugblkmt $39.95
Vostok Komandirskie Russian Diver Amphibian Hand Wind Wrist Watch RunningVostok Komandirskie Russian Diver Amphibian Hand Wind Wrist Watch Running $99.99 Vintage Mens 552 Russian Quartz Amphibian Divers WatchVintage Mens 552 Russian Quartz Amphibian Divers Watch $53.96
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Russian Soviet Army Watch Amphibian Commander Military Award Order Navy MedalRussian Soviet Army Watch Amphibian Commander Military Award Order Navy Medal $78.00 Made in Russia Amphibian Automatic Shock Resistant Men's Vintage WatchMade in Russia Amphibian Automatic Shock Resistant Men's Vintage Watch $71.97 Was:  Previous Price $119.95
New listing
		Vostok Amphibian Russian Automatic Mens Wrist Watch Global Defence ReviewNew listing Vostok Amphibian Russian Automatic Mens Wrist Watch Global Defence Review $49.00 60Min Insert 38Mm Polished Bezel Vostok Amphibian Komandirskie 3860Inspol60Min Insert 38Mm Polished Bezel Vostok Amphibian Komandirskie 3860Inspol $32.95
Russian Soviet Army Watch Amphibian Commander Military Award Submarine Navy PinRussian Soviet Army Watch Amphibian Commander Military Award Submarine Navy Pin $75.00 12Hr/60M Insert Knurled Edge Steel Bezel for Vostok Amphibian Komandirskie Watch12Hr/60M Insert Knurled Edge Steel Bezel for Vostok Amphibian Komandirskie Watch $45.00
Silver/Black Blue Pvd Steel Bezel Vostok Amphibian Komandirskie Watch / LimitedSilver/Black Blue Pvd Steel Bezel Vostok Amphibian Komandirskie Watch / Limited $50.00 60Min Reduced Diameter Polished Lumed Bezel Vostok Amphibian Komandirskie 38Ppg60Min Reduced Diameter Polished Lumed Bezel Vostok Amphibian Komandirskie 38Ppg $26.95
12 Hour Insert 38Mm Blue Pvd Bezel Vostok Amphibian Komandirskie 3812Insblu12 Hour Insert 38Mm Blue Pvd Bezel Vostok Amphibian Komandirskie 3812Insblu $22.95 Vintage Russian Divers Watch (Sub & Anchor) Very Nice ConditionVintage Russian Divers Watch (Sub & Anchor) Very Nice Condition $72.00
Smith & Wesson Sww-1100 Black Stainless Men's Amphibian Commando WatchSmith & Wesson Sww-1100 Black Stainless Men's Amphibian Commando Watch $46.61 List price:  Previous Price $62.46 Vintage Russian Vostok Amphibian Diver Watch Ussr *Us Seller* #1647Vintage Russian Vostok Amphibian Diver Watch Ussr *Us Seller* #1647 $99.00
Vostok Amphibian Military Russian 710634 Wrist Watch for MenVostok Amphibian Military Russian 710634 Wrist Watch for Men $75.00 Trending at $86.33 Vostok Amphibian Komandirskie Custom Bezel Polished Ublu60Pol / with DefectsVostok Amphibian Komandirskie Custom Bezel Polished Ublu60Pol / with Defects $36.00
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Prices current as of last update, 12/02/20 2:41am.

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