|
A typical amphibian is characterized by a moist, glandular skin, the possession of gills at some point in its life history, four limbs, ... A class of vertebrate animals in the superclass Tetrapoda characterized by a moist, glandular skin, gills at some stage of development, and no amnion during the embryonic stage.
|
encyclopedia2.thefreedictionary.com/class+Amphibia
encyclopedia2.thefreedictionary.com/class+Amphibia
|
|
|
|
They represent a grade of evolution characterized by a mobile maxilla that is hinged in front and freed from the crescent-shaped preoperculum; abbreviated heterocercal or externally symmetrical [but lacking hypurals] tail for more efficient forward drive;
|
users.tamuk.edu/kfjab02/Biology/Vertebrate%20Zoology/b3...
users.tamuk.edu/kfjab02/Biology/Vertebrate%20Zoology/b3405_ch08.htm
|
|
|
Amphibia refers to "double life", or life in water and on land ... Includes the salamanders, frogs, toads, and caecilians with approximately 3,900 spp. ... Characterized by:
|
www.shsu.edu/~bio_mlt/AMPHIBIA.html
|
|
Amphibians - Class Amphibia; ... Class Amphibia. Amphibians comprise a large and diverse class of animals. Usually placed in the same sentence as reptiles, they are really quite different. The ... ... The Class Amphibia; The Class Amphibia. The Amphibia are characterized by having moist, glandular skin that lacks ...
|
virtualology.com/halloftaxonomy/kingdomanimalia/Phylumc...
virtualology.com/halloftaxonomy/kingdomanimalia/Phylumchordata/classamphibia/ClassAmphibia.com/
|
|
The class Osteichthyes includes the largest number of living species of all ... The subclass Dipnoi (lungfishes) is characterized by an upper jaw fused to ...
|
www.seaworld.org/infobooks/BonyFish/class.html
www.seaworld.org/infobooks/BonyFish/class.html
|
|
Members of the class Osteichthyes have skeletons made of bone, cycloid scales, gills covered with opercula, and a swim bladder (for floating). Fish have a two-chambered heart. ... Birds (class Aves); Birds are characterized by feathers, wings, beaks, and hollow bones (for flight). They are classified according to living...
|
library.thinkquest.org/28751/review/animals/9.html
|
|
Division Ginglymodi...
|
www.science.widener.edu/~coughlin/fishcoll.html
|
|
Class Osteichthyes; (Greek, Osteon = bone, ichthyes = fish). The bony fish are the most diverse class of vertebrates. They comprise more than 95% of all fish and 50% of all species of vertebrates. ... Bony fish skeleton is made of bone, which is an important characteristic. Other structural feature in bony fish is a...
|
www.nvcc.edu/home/sotsuka/taxonomy/taxon/chordata/ostei...
www.nvcc.edu/home/sotsuka/taxonomy/taxon/chordata/osteichthyes.htm
|
|
7 Class Osteichthyes ... These remains were already of well diversified forms, with the fleshy-finned and ray finned types already separate, and it is believed that the Osteichthyes must have arisen at some time during the Silurian* .
|
www-biol.paisley.ac.uk/courses/tatner/biomedia/units/fi...
www-biol.paisley.ac.uk/courses/tatner/biomedia/units/fish7.htm
|
|
