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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/12Hr Combo Matte Us1260MtVostok Amphibian Komandirskie Custom Bezel 60Min/12Hr Combo Matte Us1260Mt $50.00 Smith & Wesson Sww-1100 Black Stainless Men's Amphibian Commando Watch (148)Smith & Wesson Sww-1100 Black Stainless Men's Amphibian Commando Watch (148) $40.00
12 Hour Insert 38Mm Polished Bezel Vostok Amphibian Komandirskie 3812Inspol12 Hour Insert 38Mm Polished Bezel Vostok Amphibian Komandirskie 3812Inspol $21.95 Vintage Vostok Amphibian Very Rare Barrel Case with modern dial, glass, movementVintage Vostok Amphibian Very Rare Barrel Case with modern dial, glass, movement $50.00
Vostok Amphibian Komandirskie Custom Bezel Blk-Gold/Copper Dash Matte UgblkmtVostok Amphibian Komandirskie Custom Bezel Blk-Gold/Copper Dash Matte Ugblkmt $27.95 New listing
		Russia Amphibian Automatic Shock Resistant Men's Vintage Watch Running!New listing Russia Amphibian Automatic Shock Resistant Men's Vintage Watch Running! $40.00
Campco Smith & Wesson Sww-1100 Amphibian Commando WatchCampco Smith & Wesson Sww-1100 Amphibian Commando Watch $50.50 *Us Seller* Soviet Diver Watch, Amphibian, Antimagnetic Vostok 70s 2214 #1242*Us Seller* Soviet Diver Watch, Amphibian, Antimagnetic Vostok 70s 2214 #1242 $62.30 Was:  Previous Price $89.00
60M Blue Pvd Coated Steel Bezel Vostok Amphibian Komandirskie Watch / Limited60M Blue Pvd Coated Steel Bezel Vostok Amphibian Komandirskie Watch / Limited $50.00 Russian Military Vostok Amphibian Vdv Airborne diver watch Automatic Diving Am03Russian Military Vostok Amphibian Vdv Airborne diver watch Automatic Diving Am03 $79.99
Vintage Vostok Wostok Amphibian, Soviet/Ussr, Russia 200M Wind-Up WristwatchVintage Vostok Wostok Amphibian, Soviet/Ussr, Russia 200M Wind-Up Wristwatch $5.01 Wwii era Parker Amphibian mil typ wristwatchWwii era Parker Amphibian mil typ wristwatch $44.95
Vostok Amphibian 420 Cosmonaut Soviet Dive WatchVostok Amphibian 420 Cosmonaut Soviet Dive Watch $100.00 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 $47.10 Was:  Previous Price $50.11
Authentic Vostok Auto Amphibian (#420307 Paratrooper) Military Diver Wrist WatchAuthentic Vostok Auto Amphibian (#420307 Paratrooper) Military Diver Wrist Watch $62.00 Vostok Amphibian Komandirskie Custom Bezel Blk-Gold/Copper Dash Polished UgblkpoVostok Amphibian Komandirskie Custom Bezel Blk-Gold/Copper Dash Polished Ugblkpo $31.95
Vintage Russian Vostok Amphibian WatchVintage Russian Vostok Amphibian Watch $46.99 Vostok Amphibian Military Russian 710634 Wrist Watch for Men Scuba DudeVostok Amphibian Military Russian 710634 Wrist Watch for Men Scuba Dude $60.00 Trending at $67.66
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 Vostok Soviet Russian Cccp Amphibian Kgb Dial Automatic/Mechanical Watch, No R.Vostok Soviet Russian Cccp Amphibian Kgb Dial Automatic/Mechanical Watch, No R. $56.00
Smith & Wesson Watch New Men's Amphibian Commando Sww-1100Smith & Wesson Watch New Men's Amphibian Commando Sww-1100 $47.55 Vostok Amphibian Steel Movement Holder for 24Xx Caliber Amphibia Watch / EtchedVostok Amphibian Steel Movement Holder for 24Xx Caliber Amphibia Watch / Etched $11.95
Vostok Amphibian Komandirskie Custom Bezel Blk-Gold/Copper Black Pvd UgblkpvdVostok Amphibian Komandirskie Custom Bezel Blk-Gold/Copper Black Pvd Ugblkpvd $28.95 Smith & Wesson Amphibian Commando Watch #Sww-1100Smith & Wesson Amphibian Commando Watch #Sww-1100 $52.95
12 Hour Silver Insert 38Mm Blue Pvd Bezel Vostok Amphibian Komandirskie 3812Slbl12 Hour Silver Insert 38Mm Blue Pvd Bezel Vostok Amphibian Komandirskie 3812Slbl $21.95 Silver/Pale Green Vostok Amphibian Komandirskie Custom Paddle Watch HandsSilver/Pale Green Vostok Amphibian Komandirskie Custom Paddle Watch Hands $20.99
60Min Insert 38Mm Gold Pvd Bezel Vostok Amphibian Komandirskie 3860Insgld60Min Insert 38Mm Gold Pvd Bezel Vostok Amphibian Komandirskie 3860Insgld $21.95 Vostok Amphibian Komandirskie Custom Bezel 60Min Blue Pvd Ublu60BlupvdVostok Amphibian Komandirskie Custom Bezel 60Min Blue Pvd Ublu60Blupvd $37.95
New listing
		Roven Dino Professional 8007 Amphibian Swiss Movement Womens Watch 200mNew listing Roven Dino Professional 8007 Amphibian Swiss Movement Womens Watch 200m $9.99 Vostok Automatic Amphibian watch / Wr200 m ( 2416 / 710335)Vostok Automatic Amphibian watch / Wr200 m ( 2416 / 710335) $89.99
New Smith & Wesson Men's Amphibian Commando Sww1100New Smith & Wesson Men's Amphibian Commando Sww1100 $47.63 Compass Insert Knurled Edge Steel Bezel for Vostok Amphibian Komandirskie WatchCompass Insert Knurled Edge Steel Bezel for Vostok Amphibian Komandirskie Watch $31.95
Vostok Amphibian Komandirskie Custom Bezel 60Min/12Hr Combo Black Pvd Us1260BlkpVostok Amphibian Komandirskie Custom Bezel 60Min/12Hr Combo Black Pvd Us1260Blkp $27.95 Soviet Vintage Vostok Amphibian Mechanical Watch Diver Steel Case Ussr RareSoviet Vintage Vostok Amphibian Mechanical Watch Diver Steel Case Ussr Rare $55.00
Smith & Wesson Men's Amphibian Commando Watch. Black stainless casing. Black facSmith & Wesson Men's Amphibian Commando Watch. Black stainless casing. Black fac $46.62 Was:  Previous Price $51.80 12Hr/60M Insert Knurled Edge Steel Bezel for Vostok Amphibian Komandirskie Watch12Hr/60M Insert Knurled Edge Steel Bezel for Vostok Amphibian Komandirskie Watch $39.95
12 Hour Insert 38Mm Blue Pvd Bezel Vostok Amphibian Komandirskie 3812Insblu12 Hour Insert 38Mm Blue Pvd Bezel Vostok Amphibian Komandirskie 3812Insblu $21.95 60Min Reduced Diameter Brushed Lumed Bezel Vostok Amphibian Komandirskie 38Pbg60Min Reduced Diameter Brushed Lumed Bezel Vostok Amphibian Komandirskie 38Pbg $21.95
Authentic Soviet Men's Wrist Watch Vostok Amphibian Амфибия Восток UssrAuthentic Soviet Men's Wrist Watch Vostok Amphibian Амфибия Восток Ussr $85.50 Was:  Previous Price $95.00 Blue/Black Brushed Stainless Steel Bezel for Vostok Amphibian Komandirskie WatchBlue/Black Brushed Stainless Steel Bezel for Vostok Amphibian Komandirskie Watch $50.00
Vostok watch amphibian Used AutomaticVostok watch amphibian Used Automatic $35.00 *Us Seller* Soviet Vostok WindUp Watch, Amphibian, Antimagnetic 1980s #1034*Us Seller* Soviet Vostok WindUp Watch, Amphibian, Antimagnetic 1980s #1034 $69.00
Wwii Era Parker Watch Co. Amphibian Wristwatch Watch WorkingWwii Era Parker Watch Co. Amphibian Wristwatch Watch Working $45.00 New Vostok Amfibia Amphibia Amphibian Russian Mechanical Watch - Ships from UsaNew Vostok Amfibia Amphibia Amphibian Russian Mechanical Watch - Ships from Usa $92.50
Vostok Amphibian Antimagnetic Vintage 200m Diver Man Watch Soviet Ussr New DialVostok Amphibian Antimagnetic Vintage 200m Diver Man Watch Soviet Ussr New Dial $69.99 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
Silver/White Vostok Amphibian Komandirskie Custom Paddle Watch HandsSilver/White Vostok Amphibian Komandirskie Custom Paddle Watch Hands $29.99 Vintage Russian Vostok Amphibian Albatross Diver Watch Ussr *Us Seller* #1522Vintage Russian Vostok Amphibian Albatross Diver Watch Ussr *Us Seller* #1522 $99.00
Compass / Pvd Coated Steel Bezel Vostok Amphibian Komandirskie Watch / LimitedCompass / Pvd Coated Steel Bezel Vostok Amphibian Komandirskie Watch / Limited $50.00 Authentic Vostok Russian Vostok Auto Amphibian (#420331) Military Diver WristAuthentic Vostok Russian Vostok Auto Amphibian (#420331) Military Diver Wrist $60.00
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 *Us Seller* Soviet Diver Watch, Amphibian, Antimagnetic Vostok 70s #1231*Us Seller* Soviet Diver Watch, Amphibian, Antimagnetic Vostok 70s #1231 $66.50 Was:  Previous Price $95.00
Spring Wire Lock For Vostok Amphibian Komandirskie Watch BezelsSpring Wire Lock For Vostok Amphibian Komandirskie Watch Bezels $3.95 Vostok Amphibian Russian Military Diver's Automatic Men's Watch 420379Vostok Amphibian Russian Military Diver's Automatic Men's Watch 420379 $79.99 Was:  Previous Price $99.99
Boctok Amphibian Watch 200 Meter Russian Military Diver Watch Kgb UssrBoctok Amphibian Watch 200 Meter Russian Military Diver Watch Kgb Ussr $29.99 Vostok Amphibian Russian Military Diver's Mechanical Men's Watch 420945Vostok Amphibian Russian Military Diver's Mechanical Men's Watch 420945 $79.99 Was:  Previous Price $99.99
Dash Style Pvd Coated Steel Bezel Vostok Amphibian Komandirskie Watch / LimitedDash Style Pvd Coated Steel Bezel Vostok Amphibian Komandirskie Watch / Limited $50.00 Vostok Komandirskie Russian Diver Amphibian Automatic Wrist Watch RunningVostok Komandirskie Russian Diver Amphibian Automatic Wrist Watch Running $49.99
New listing
		Soviet Military Vostok Amphibian Submarine Diver men's diver's watch Diving NavyNew listing Soviet Military Vostok Amphibian Submarine Diver men's diver's watch Diving Navy $24.99 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 $89.99
Smith & Wesson Sww-1100 Black Stainless Men's Amphibian Commando WatchSmith & Wesson Sww-1100 Black Stainless Men's Amphibian Commando Watch See details... $61.06 White/Blue Vostok Amphibian Komandirskie Custom Watch Hands "Telum" Ph2BlwWhite/Blue Vostok Amphibian Komandirskie Custom Watch Hands "Telum" Ph2Blw $20.99
Men's Wristwatch Russian Amphibian Kgb 200M Buffalo Head Nickel BandMen's Wristwatch Russian Amphibian Kgb 200M Buffalo Head Nickel Band $95.90 Was:  Previous Price $122.95 Vtg Kgb Amphibian Automatic Mechanical Watch Soviet Union Ussr Russian MilitaryVtg Kgb Amphibian Automatic Mechanical Watch Soviet Union Ussr Russian Military $74.00
Authentic Russian Vostok Auto Amphibian (#420392) Military Diver Wrist WatchAuthentic Russian Vostok Auto Amphibian (#420392) Military Diver Wrist Watch $62.99 Vostok Oficerskie Wwii 40th Anniversary Amphibian Soviet Dive WatchVostok Oficerskie Wwii 40th Anniversary Amphibian Soviet Dive Watch $100.00
Red /Black Vostok Amphibian Komandirskie Custom Watch Hands "Telum" Ph2RbkRed /Black Vostok Amphibian Komandirskie Custom Watch Hands "Telum" Ph2Rbk $20.99 12H/60M Blue Pvd Coated Steel Bezel Vostok Amphibian Komandirskie Watch/Limited12H/60M Blue Pvd Coated Steel Bezel Vostok Amphibian Komandirskie Watch/Limited $50.00
Military Soviet mechanical mens watch Vostok Amphibian Ussr Diver Albatross Am06Military Soviet mechanical mens watch Vostok Amphibian Ussr Diver Albatross Am06 $79.99 Green Russian Soviet mechanical men's watch Vostok 2209 Wostok Amphibian Diver☭Green Russian Soviet mechanical men's watch Vostok 2209 Wostok Amphibian Diver☭ $85.00
Vostok Komandirskie Russian Diver Amphibian Hand Wind Wrist Watch RunningVostok Komandirskie Russian Diver Amphibian Hand Wind Wrist Watch Running $99.99 Smith & Wesson Black Mens Amphibian Commando Water Resistant Watch W1100Smith & Wesson Black Mens Amphibian Commando Water Resistant Watch W1100 $48.84
Vostok Amphibian Scuba Dude (710634) Military Russian Watch Black DiverVostok Amphibian Scuba Dude (710634) Military Russian Watch Black Diver $89.99 Silver Vostok Amphibian Komandirskie Custom Watch Hands "Telum" Ph2SsSilver Vostok Amphibian Komandirskie Custom Watch Hands "Telum" Ph2Ss $20.99
Vostok Soviet Watch U Boat Amphibian SubmarineVostok Soviet Watch U Boat Amphibian Submarine $35.00 60M Blu/Blk+Red Matte Bezel for Vostok Amphibian Komandirskie Watch 3860Brmt60M Blu/Blk+Red Matte Bezel for Vostok Amphibian Komandirskie Watch 3860Brmt $35.95
New listing
		Amphibian Wostok Navy commander automatic wrist watch workingNew listing Amphibian Wostok Navy commander automatic wrist watch working $1.00 Dash Style Polished Steel Bezel Vostok Amphibian Komandirskie Watch / LimitedDash Style Polished Steel Bezel Vostok Amphibian Komandirskie Watch / Limited $50.00
Vostok Amphibian Komandirskie Custom Bezel 60Min/12Hr Combo Polished Us1260PolVostok Amphibian Komandirskie Custom Bezel 60Min/12Hr Combo Polished Us1260Pol $50.00 60Min Insert 38Mm Polished Bezel Vostok
00004000
 Amphibian Komandirskie 3860Inspol60Min Insert 38Mm Polished Bezel Vostok 00004000 Amphibian Komandirskie 3860Inspol $21.95
60Min Reduced Diameter Blue Pvd Lumed Bezel Vostok Amphibian Komandirskie 38Blup60Min Reduced Diameter Blue Pvd Lumed Bezel Vostok Amphibian Komandirskie 38Blup $22.95
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Prices current as of last update, 12/10/19 7:21am.

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