1. Amphibian - Wikipedia, The Free Encyclopedia amphibians (class Amphibia; from Greek both and life ) are a taxon of animals that include all living tetrapods (fourlegged vertebrates) that http://en.wikipedia.org/wiki/Amphibian

Amphibian From Wikipedia, the free encyclopedia Jump to: navigation search This article or section is missing citations or needs footnotes Using inline citations (July 2007) For other uses, see Amphibian (disambiguation) Amphibians Fossil range: Late Devonian - Recent Western Spadefoot Toad Spea hammondii Scientific classification Kingdom: Animalia Phylum: Chordata Subphylum: Vertebrata Superclass: Tetrapoda Class: Amphibia Linnaeus Subclasses and Orders Temnospondyli extinct Subclass Lepospondyli extinct Subclass Lissamphibia Anura Caudata Gymnophiona Amphibians class Amphibia ; from Greek "both" and "life") are a taxon of animals that include all living tetrapods (four-legged vertebrates ) that do not have amniotic eggs , are ectothermic (term for the animals whose body heat is regulated by the external environment; previously known as cold-blooded), and generally spend part of their time in water. Most amphibians do not have the adaptations to an entirely terrestrial existence found in most other modern tetrapods ( amniotes ). There are around 6,200 described, living species of amphibians. The study of amphibians and

2. Amphibian, Pictures, Photos, Facts, Information, Sounds, Habitats, Reports, News Amphibian pictures, photos, facts, information, sounds, habitats, reports, news, and more from National Geographic. http://animals.nationalgeographic.com/animals/amphibians.html

Site Index Subscriptions Shop Newsletters ... Catalog Quick Shop Sign up for free Newsletters Once a month get new photos and expert tips. Sign up advertisement Animals Animals Main Amphibians Birds ... A-Z Amphibians var so = new SWFObject("/staticfiles/NGS/Global/ApplicationAssets/flash/dl-loader.swf", "dl_loader", "486", "244", "7", "#ffffff"); so.addParam("wmode", "transparent"); so.addVariable("dlXML", "/ngsxmlfeed/dynamiclead.jsp?vcmid=f364220789022110VgnVCM100000f102a8c0RCRD%26site=Animals"); so.addVariable("main_dl_src","/staticfiles/NGS/Global/ApplicationAssets/flash/dl-main.swf");so.write("dl-flash"); What Is an Amphibian? Amphibians lead double lives—one in water and one on land. Many begin life with gills, then develop lungs as they age. They are vertebrate animals that include frogs, toads, salamanders, and newts as well as odd, wormlike caecilians (seh-SILL-yuns). They are cold-blooded, using the environment to regulate their body temperature. Early amphibians were the first animals to leave the sea and venture onto land, forming a crucial link from fish to terrestrial reptiles. Amphibian Features Photo Gallery: Poison Dart Frogs Want to see more of these incredibly colorful critters? Hop on in.

3. Amphibian Printouts - EnchantedLearning.com amphibians are vertebrates that spend part of their lives under water (breathing with gills) and the remainder on land (breathing with lungs). http://www.enchantedlearning.com/coloring/amphibians.shtml

Advertisement. EnchantedLearning.com is a user-supported site. As a bonus, site members have access to a banner-ad-free version of the site, with print-friendly pages. Click here to learn more. Become a member of Enchanted Learning. Site subscriptions last 12 months. Click here for more information on site membership. $20.00/year or other amount (directly by Credit Card $20.00/year or other amount (via PayPal $20.00/year or other amount (for sending a check by mail $20.00/year or other amount (for subscribing by school purchase order As a thank-you bonus, site members have access to a banner-ad-free version of the site, with print-friendly pages. (Already a member? Click here. EnchantedLEarning.com Animal Printouts A B C D ... Animal Report Graphic Organizers Click on an animal to go to that printout. Go to animals listed by biome For the top 25 printouts, click here Amphibians Frog and Toad Theme Page Amphibians are vertebrates that spend part of their lives under water (breathing with gills) and the remainder on land (breathing with lungs). Amphibians are cold-blooded; their body temperature depends on the temperature of their environment. There are three groups (orders) of living amphibians: newts and salamanders (urodeles); frogs and toads (anurans); and caecilians (the worm-like gymnophiones). Printouts: Frogs Tadpoles grow up to be frogs.

4. ADW: Amphibia: Information Some other good sites on amphibians. AmphibiaWeb Amphibian Species of the World Savannah River Ecology Lab s Herpetology Homepage http://animaldiversity.ummz.umich.edu/site/accounts/information/Amphibia.html

Overview News Technology Conditions of Use ... Home Kingdom Animalia Phylum Chordata Subphylum Vertebrata Class Amphibia Class Amphibia amphibians Information Pictures Specimens Sounds ... Classification editLink('skunkworks/.accounts/200310302041') 2008/03/16 01:48:23.781 GMT-4 Kingdom: Animalia Phylum: Chordata Subphylum: Vertebrata Class: Amphibia Members of this Class We don't yet have an account for this group, but we do have information about families within the Amphibia. Use the Classification tab to navigate to them, or click on "Members of this Class" on the right. Some other good sites on amphibians: AmphibiaWeb Amphibian Species of the World Savannah River Ecology Lab's Herpetology Homepage 2008/03/16 01:48:25.581 GMT-4 To cite this page: 2001. "Amphibia" (On-line), Animal Diversity Web. Accessed April 03, 2008 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Amphibia.html. The Animal Diversity Web is an educational resource written largely by and for college students . ADW doesn't cover all species in the world, nor does it include all the latest scientific information about organisms we describe. Though we edit our accounts for accuracy, we cannot guarantee all information in those accounts. While ADW staff and contributors provide references to books and websites that we believe are reputable, we cannot necessarily endorse the contents of references beyond our control. Other formats: OWL Home About Us Special Topics ... Comment Sponsored in part by the Interagency Education Research Initiative, the Homeland Foundation and the

5. Amphibians Notes on the habitats and distribution of amphibians, their classification, their structure and function, life cycle and behavior. http://www.webspawner.com/users/petcentralamphibians/

Amphibians NAVIGATOR Home Reptiles Mammals Amphibians ... Birds Amphibians: Frogs Amphibians are members of the class Amphibia, subphylum Vertebrata, phylum Chordata. The class Amphibia includes frogs, toads, salamanders, newts and caecilians. Amphibians are characterized by a glandular skin without external scales, by gills during development (and in adulthood in some), and by eggs that may have jelly coats but develop without formation of extraembryonic membranes such as the amnion. Most amphibians also have four limbs. Limbs and lungs are adaptations for life on land; the limbs evolved from the ancestral fishes' lobed fins. The scales and amniote egg evolved by reptiles are further adaptations for life on land and distinguish reptiles from amphibians. The class Amphibia comprises three living orders and several extinct ones. The living members of the class include those forms which have been mentioned above. Amphibians are thought to have arisen from lobe-finned crossopterygian fishes. Considerable conjecture exists, however, as to whether amphibians actually arose from several lineages. Some Swedish experts tend to favor separate lineages for each of the modern orders; certain British and U.S. scientists support the idea of two lineages, one giving rise to frogs, the other to salamanders and caecilians. The characteristics of vertebrae, teeth, and skull bones form the basis for these hypotheses. Additional developmental and variational data are necessary to support these ideas. Two major subclasses of extinct amphibians are found in the fossil record. They are the Labyrinthodontia and the Lepospondyli. The amphibians of the Labyrinthodontia, which lived during the late Devonian through Triassic periods (345 to 190 million years ago), include the most primitive amphibians represented by the genus Ichthyostega. They were fresh-water carnivorous animals, with tail fins, small scales, and a fishlike vertebral column. Their skulls had many bones, as did those of their presumed crossopterygian ancestor. The Labyrinthodontia, according to the U.S. paleontologist Alfred S. Romer, include three extinct orders: the Ichthyostegalia, the Temnospondyli, and the Anthracosauria. The Anthracosauria are thought to be the ancestors of reptiles and hence of modern birds and mammals. The Temnospondyli are thought by some scientists to be the ancestors of the modern frogs.

6. Introduction To The Amphibia Many excellent images and information on living amphibians, including recorded frog calls, Or for more fine images of living amphibians, visit TRITON. http://www.ucmp.berkeley.edu/vertebrates/tetrapods/amphibintro.html

Introduction to the Amphibia Clicking on the icons below will NOT cause warts. At least, we don't think you'll get warts from our server. . . Anyway, the Amphibia include some familiar creatures: the frogs, toads, newts, and salamanders. Some not-so-familiar creatures, like the legless, burrowing caecilians, are also amphibians. As suggested by their name, which means "double life" in Greek, amphibians spend at least part of their lives in water; some are entirely aquatic. Click on the buttons below to find out more about the Amphibia. If you do get warts, please don't sue us. Many excellent images and information on living amphibians , including recorded frog calls, are available on the Web of Life maintained at the University of Michigan. Or for more fine images of living amphibians, visit TRITON

7. Global Amphibian Assessment GGA is the firstever assessment of the conservation status of the world s 5918 known species of frogs, toads, salamanders and caecilians and provides a http://www.globalamphibians.org/

The Global Amphibian Assessment (GAA) is the first-ever comprehensive assessment of the conservation status of the world's 5,743 known species of frogs, toads, salamanders, and caecilians. This website presents results of the assessments, including IUCN Red List threat category, range map, ecology information, and other data for every amphibian species. Search the GAA database for species by name, taxonomy, country, region, habitat type, threat type, or IUCN Red List status. Help Contact Us/Feedback Site Search Links ... More Findings displayRandom(fastfacts,7);

8. NPWRC :: Checklist Of Amphibian Species And Identification Guide An online guide for the identification of amphibians in North America north of Mexico. http://www.npwrc.usgs.gov/resource/herps/amphibid/index.htm

USGS Home Contact USGS Search USGS Northern Prairie Wildlife Research Center Checklist of Amphibian Species and Identification Guide An Online Guide for the Identification of Amphibians in North America north of Mexico Interest in amphibians continues to rise as people become more aware of this fascinating group of animals. To the uninitiated all frogs may look alike; ditto for salamanders (in the same manner that beginning birders are overwhelmed by the immense variety of small brown birds!). One of the purposes of this CHECKLIST and online IDENTIFICATION GUIDE is to help you learn what species exist in North America (north of Mexico). Table of Contents About This Guide Identification Guide Species Checklist References Caudata: Salamanders Listing by Family Listing by Species Anura: Frogs and Toads Listing by Family Listing by Species Identification Definitions Other Identification Resources Available Online ... Photo Contributors Notice: All images contained hereafter are the property of the said photographer. They are not to be reproduced, copied, printed, stored, or distributed without written permission of the photographer This resource should be cited as: Northern Prairie Wildlife Research Center. 1997. Checklist of Amphibian Species and Identification Guide: An Online Guide for the Identification of Amphibians in North America north of Mexico. Jamestown, ND: Northern Prairie Wildlife Research Center Online. http://www.npwrc.usgs.gov/resource/herps/amphibid/index.htm (Version 14OCT2004).

9. GarageBand.com : Amphibians AMPHIBIAN From ‘Amphibios’ meaning literally ‘living a double life.’ The amphibians dig back to simpler times when vocals were key, melodies integral and http://www.garageband.com/artist/amphibians

Join the community Log In Advanced Search You may also like GB Radio: Alternative Rock Top 20 User Playlists featuring "Amphibians" Music in: New Brunswick New Jersey Alternative Rock other genres ... Become a Gold Member! BAND PROFILE Amphibians Amphibians's Newsletter Genre: Alternative Rock Alternative Hometown: New Brunswick, New Jersey Members Bob Garaffa : Lead Guitar (Vocals), Fred Garaffa : Bass (Vocals, Guitar) Artist URL http://www.garageband.com/artist/amphibians http://www.myspace.com/amphibians Amphibians on iLike Influenced By Beatles Hendrix Led Zeppelin King Crimson ... Yes DESCRIPTION PRICE Tip Amphibians With PayPal N/A New Day (I Feel .. Cabone De Douani.. The Rain Came Do.. Keep Your Distan.. ... New Day ( I Feel.. = Current Round = All-time = Signature Track Company Info Podcaster / Webcasters On the web Advertise ... Independent Music Charts

10. ENature: FieldGuides: Reptiles And Amphibians eNature Field Guide to Reptiles and amphibians Comprehensive guide to America s reptiles and amphibians with species pictures, field descriptions, http://www.enature.com/fieldguides/intermediate.asp?curGroupID=7

11. Electronic Zoo / NetVet Veterinary Resources - Amphibian Sites General Animal Sites, amphibians, Birds, Cats, Cows, Dogs, Ferrets, Fish, Horses, Invertebrates, Marine, Pigs, Primates, Rabbits, Reptiles, Rodents http://netvet.wustl.edu/amphib.htm

Amphibians Frogs and Toads Other Commercial Frogs and Toads Amphibian Embryology Tutorial (University of Wisconsin) Amphibians - National Biological Survey Blue Frog Page Dendrobatid Frog Page ... Xenopus White Pages Other All About Axolotls Amphibian and Reptile Collection - Museum of Vertebrate Zoology (UC Berkeley) Amphibian Monitoring Amphibian Sources (Notes) ... World Wide Web Virtual Library Herpetology Biosciences Page Commercial Animal Mania Bibliomania! Black Jungle Terrarium Supply Herp Mall ... Xenopus Express Select Another Species General Animal Sites Amphibians Birds Cats Cows Dogs Ferrets Fish Horses Invertebrates Marine Pigs Primates Rabbits Reptiles Rodents Small Ruminants Wildlife Zoo Animals Fictional Images Sounds Return to: 1994-98, Ken Boschert, DVM

12. Amphibians As the tadpole grow into a frog, it loses its gills and tail, and develops legs for moving on land. Most amphibians can both walk and swim in water. http://www.kidport.com/RefLib/Science/Animals/Amphibians.htm

Amphibians Amphibians lay their eggs in water, and young amphibians tend to resemble small fish. The tadpole, or newborn frog, is born and lives in water. It has a tail that allows it to swim like a fish. It also has gills so that it can breathe under water. As the tadpole grow into a frog, it loses its gills and tail, and develops legs for moving on land. Most amphibians can both walk and swim in water. Enter your search terms Submit search form Web www.kidport.com About Animals Index of Animals Vertebrate Animals Invertebrate Animals Web Links ... Science Main Index Depending on the species of amphibian, breathing can take place in gills, lungs, the lining of the mouth, the skin, or some combination of these. Amphibians body temperature changes with its environment. In cold climates, amphibians hibernate during the winter. Web Sites about Amphibians: "Frogs" from an exhibit at The Exploratorium in San Francisco, California Frogs and Toads from the Hudson Valley at National Geographic's Amphibian Suite

13. Melissa Kaplan's Herps: Amphibians Extensive information on the captive care and behavior of green iguanas, and other reptiles and amphibians, by Melissa Kaplan, author of Iguanas for http://www.anapsid.org/mainamphibians.html

Melissa Kaplan's Herp Care Collection Last updated June 26, 2007 Amphibians ...though the boys throw stones at frogs in sport, yet the frogs do not die in sport but in earnest. - Plutarch Information Clusters Search This Site Species: Amphibians Chelonians Crocodilians Cyclura ... by Melissa Kaplan Now Available! Captive Care of the Green Iguana video, interviews with Melissa Kaplan, and more! Advance Care Directives Chronic Neuroimmune Diseases Blogs Lizards-in-Scarves Eggs-in-Hats If you are looking for information on species other than those listed here, please check the sites in the Resources section, or join and post questions to the amphibian email lists or the Kingsnake.com forums . The Researching Herp Information article has additional general suggestions for doing herp research. Caecilians Caecilian.org Frogs and Toads African Bullfrogs - Gampper African Clawed Frogs - Gampper Chinese Fire-Bellied Toads - Plesner - Staniszewski Green Tree Frogs - Matta Leopard Frogs - Gampper Ornate Horned Frogs - Kaplan Ornate Horned Frogs - Breeding - Wegner White's Tree Frogs - Frogland Salamanders and Newts Basic Overview of Salamanders/Newts - Kaplan - Staniszewski Caudata.org

14. Animal Bytes: Amphibians Visiting the San Diego Zoo and the Wild Animal Park helps provide resources to track, and hopefully slow down, the global decline of amphibian populations. http://www.sandiegozoo.org/animalbytes/a-amphibians.html

animal bytes home reptiles birds mammals ... amphibians Animals Caecilian Goliath Frog NEW! Mantella Poison Frog News Conservation Research CRES Scientist Fights Deadly Amphibian Fungus in Panama Party for the Planet at the Wild Animal Park! April 19 and 20 We get things hopping wtih amphibian-themed crafts and games and a special show. Meet researchers and bullfrogs, too! More... Amphibian News page... Helping amphibians worldwide Visiting the San Diego Zoo and the Wild Animal Park helps provide resources to track, and hopefully slow down, the global decline of amphibian populations. A major cause of the current global amphibian extinction crisis seems to be the spread of the infectious chytrid fungus. This disease grows on the skin of adult amphibians, keeping them from absorbing water and oxygen through their skin. Our researchers will be developing guidelines for disease surveillance, perfecting techniques to freeze amphibian cell cultures for the , collecting and storing sperm, eggs, and embryos from animals within our collection, and managing assurance colonies of amphibians on-site, including our local mountain yellow-legged frog. Animal Bytes: Amphibians What is an amphibian?

15. Living Amphibians Introduction to the taxonomy of Amphibia, including Salientia (frogs and toads), Caudata (salamanders and newts), and gymnophiona (caecilians). http://www.tolweb.org/Living_Amphibians

Under Construction Containing Groups Terrestrial Vertebrates Sarcopterygii Gnathostomata Vertebrata ... Life on Earth Other Terrestrial Vertebrates Amniota Solenodonsaurus janenschi Living Amphibians Seymouriamorpha Temnospondyli Baphetidae Crassigyrinus scoticus ... Acanthostega gunnari Subgroups Salientia Caudata Living Amphibians Frogs and toads, salamanders and newts, and caecilians Salientia (Frogs and Toads) Caudata (Salamanders and Newts) Gymnophiona (Caecilians) Containing group: Terrestrial Vertebrates Introduction This group, which includes all living amphibians, as well as their extinct relatives, goes by two formal names: Lissamphibia or Amphibia. References Duellman, W. E. and L. Trueb. 1994. Biology of Amphibians. Johns Hopkins University Press, Baltimore. Zardoya, R. and A. Meier. 2000. Mitochondrial evidence on the phylogenetic position of caecilians (Amphibia: Gymnophiona). Genetics 155:765-775. Information on the Internet AmphibiaTree . The mission of this project is the realization of a comprehensive phylogeny of all taxa of extant and extinct amphibians. Amphibian Species of the World AmphibiaWeb Declining Amphibian Population Task Force Australian Herpetological Directory ... livingunderworld.org

16. Reptiles And Amphibians - National Zoo| FONZ Reptiles and amphibians at the National Zoo. Brought to you by the National Zoo FONZ. http://nationalzoo.si.edu/Animals/ReptilesAmphibians/

Visit Hours Getting to the Zoo Zoo Map ... Photo Gallery Related Resources Breaking the Fall of Frogs National Zoo scientists help to create a safety net for frogs, which are declining around the world at alarming rates. On Waterdogs, Mudpuppies, and the Occasional Hellbender Amphibian Invaders: Down Under and All Around Teachers: download Amphibian Alert! a curriculum for teaching children about amphibians and their global population declines. Reptile Discovery Center Activity Guide Reptile Discovery Center Programs Reptiles The world's 8,240 species of reptiles inhabit every continent except Antarctica. Reptiles include turtles, snakes, crocodiles, and lizards. They can be as small as the dwarf gecko (less than an inch long) or as big as the saltwater crocodile, which can weigh more than a ton. All reptiles have scales, but some are too small to be seen. Reptiles are ectothermic (their body temperature is regulated by their environment). Most lay eggs, but a few give birth to live young. Amphibians There are more than 6,000 species of amphibians on Earth, including frogs, toads, salamanders, and newts. One-third of amphibians are threatened with extinction.

17. Amphibians amphibians. Bullfrog Chorus Frog Northern Leopard Frog YellowSpotted Salamander Previous Home Next. Line. Home - Discover Nature! - http://nature.ca/notebooks/english/amphpg.htm

Amphibians Bullfrog Chorus Frog Northern Leopard Frog Yellow-Spotted Salamander ... Comments or Questions?

18. National Geographic News Photo Gallery: Weird Amphibians Join List Of At-Risk Od January 22, 2008—A man holds a Chinese giant salamander, one of ten species to garner conservation attention as part of the EDGE amphibians program http://news.nationalgeographic.com/news/2008/01/photogalleries/amphibian-picture

NEWS HOME ANIMAL NEWS ANCIENT WORLD ENVIRONMENT NEWS ... WEIRD NEWS Weird Amphibians Join List of At-Risk Oddities More News Photos Email to a Friend 1 of 5 RELATED STORIES "Weirdest" Animals to Get Conservation Attention (January 16, 2007) Amphibians: Pictures, Profiles, Videos, More Shark Ate Amphibian Ate Fish: First "Food-Chain Fossil" (November 8, 2007) A man holds a Chinese giant salamander, one of ten species to garner conservation attention as part of the EDGE Amphibians program announced today by the Zoological Society of London (ZSL). The initiative is dedicated to preserving what the group says are some of the world's strangest and most vulnerable amphibian species. More Photos in the News Today's Top 15 Most Popular Stories Free Email Newsletter: "Focus on Photography" TODAY'S MOST POPULAR NEWS STORIES PHOTOS: Giant, Unknown Animals Found off Antarctica PHOTOS: Intact Colossus of Egypt's Queen Tiye Found Rare Stonehenge Dig Aims to Pinpoint Origin 15 Most Popular News Stories NEWS FEEDS How to Use XML or RSS 15 Most Popular News Pages Photos in the News News Videos advertisement Podcasts National Geographic to Go National Geographic News, Videos, and More

19. Amphibian Specialist Group Amphibian populations are disappearing from habitats all around the world. The crisis caught us by surprise and only now are we able to fully grasp the http://www.amphibians.org/

The World Conservation Union [IUCN] Species Survial Commission [SSC] Global Amphibian Assessment Conservation International ... Contact us About Amphibian Declines... Amphibian populations are disappearing from habitats all around the world. The crisis caught us by surprise - and only now are we able to fully grasp the scope of the situation. Around a third of amphibian species are threatened with extinction - mass extinctions of this magnitude have not been seen since the time of the dinosaurs. The crisis shows us that the world has changed. Traditional threats to species and ecosystems - such as habitat loss and pollution - are being compounded by new threats such as climate change and emerging disease. This is not simply an amphibian problem, but a human welfare issue. We need to act quickly to save the amphibians and the ecosystems that support them and provide us with clean drinking water, clean air, and support the quality of life that many take for granted. Our Response... A unified global response is required to tackle a crisis of this magnitude. This called for the formation of a global body that could harness the intellectual and institutional capacity of a conservation and research network at country, regional and global levels: the Amphibian Specialist Group.

20. Ctamphibians Photos and life histories of the state s frogs and salmanders; recordings of frog calls. http://ctamp.homestead.com/ctamphibians.html

Email John Himmelman Marbled Salamander Bullfrogs and Green Frogs , are wriggling about in more permanent bodies of water.   And on a warm winter afternoon, a Spring Peeper, awakened too soon, can occasionally be heard "peeping" in the distance. I f you are interested in enjoying this group of animals, the "kick off" season begins late winter/early spring.  It is at this time the Spring Peepers and Wood Frogs begin their chorus and the Spotted Salamanders emerge from the ground to their rendevous in nearby vernal pools. VERNAL POOLS - their importance to amphibians FROGS (Anura Toads (Bufonidae) Eastern American Toad (Bufo americanus) Fowler's Toad (Bufo fowleri) Treefrogs (Hylidae) Pelobatidae Eastern Spadefoot (Scaphiopus holbrookii True Frogs (Ranidae) Spring Peeper (Pseudacris crucifer) Gray Tree Frog (Hyla versicolor) ... (Rana sylvatica C John Himmelman The two books below are from my "Nature Upclose" series with Children's Press.  Click on one of the covers to see sample pages and ordering information. For a look at some CT moths...

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