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Amphibia

Amphibia

(Science: zoology) One of the classes of vertebrates.

The amphibia are distinguished by having usually no scales, by having eggs and embryos similar to those of fishes, and by undergoing a complete metamorphosis, the young having gills. There are three living orders: (1) The tailless, as the frogs (Anura); (2) The tailed (Urodela), as the salamanders, and the siren group (Sirenoidea), which retain the gills of the young state (hence called Perennibranchiata) through the adult state, among which are the siren, proteus, etc.; (3) The Coecilians, or serpentlike amphibia (Ophiomorpha or Gymnophiona), with minute scales and without limbs. The extinct Labyrinthodonts also belonged to this class. The term is sometimes loosely applied to both reptiles and amphibians collectively.

See: Amphibium.


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Book recommendation for exam

... of chordates; general features and life history of Branchiostoma and Herdamania. 13. Pisces : Scales, respiration, locomotion, migration. 14. Amphibia : Origin of tetrapods; parental care, paedomorphosis. 15. Reptilia : Origin of reptiles; skull types; status of Sphenodon and crocidiles. 16. ...

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by bertstare
Sun Oct 21, 2012 2:19 pm
 
Forum: Zoology Discussion
Topic: Book recommendation for exam
Replies: 3
Views: 6304

A quick question regarding the classification of amphibians

Since amphibia is a paraphyletic group, why is it not discarded? Why do some biologists argue in favor of keeping the term?

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by TheGreatPretender
Fri Oct 22, 2010 4:51 am
 
Forum: General Discussion
Topic: A quick question regarding the classification of amphibians
Replies: 1
Views: 1509

Frog Skeleton Help

... and maybe some kind soul may even provide me a picture with labels. So here: Frog Classification Phylum ~ambordata Sub-Phylum ~Vertebrata Class ~Amphibia Order ~Arura Family ~Randos Species ~Vettigera SeNarra ~Kana Vettigera Vertebral Column Atlas-1 Vertebras 2” vertebrae Urostyle 10th Vertebrae ...

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by jemokn
Mon Sep 15, 2008 1:58 pm
 
Forum: Zoology Discussion
Topic: Frog Skeleton Help
Replies: 1
Views: 30942

MEASUREMENTS: INCREASE IN GIRTH / WEIGHT IN FEMALE CORUCIA

... S.; 1985. Captive Breeding of the Gharial (Gavalis Gangeticus {underlined}). ASRA the Journal of the association for the study of reptilia and Amphibia 2(4): 23-45 Coburn John; 1996. Prehensile tailed skinks. T.F.H. Publications Inc. Neptune City, New Jersey, U.S.A. DeVosjoli, Phillippe; 1993. ...

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by Brian - LCRC
Fri Oct 13, 2006 11:22 pm
 
Forum: Zoology Discussion
Topic: MEASUREMENTS: INCREASE IN GIRTH / WEIGHT IN FEMALE CORUCIA
Replies: 1
Views: 2795

The Fiber Disease

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by Skytroll
Sun May 21, 2006 3:36 am
 
Forum: Human Biology
Topic: The Fiber Disease
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