[DOC] [TLE] Amphibian - Wikipedia [PAR] Amphibians are ectothermic, tetrapod vertebrates of the class Amphibia. Modern 
amphibians are all Lissamphibia. They inhabit a wide variety of habitats, with 
most species living within ... Traditionally, the class Amphibia includes all 
tetrapod vertebrates that are not amniotes. Amphibia in its widest sense (sensu 
lato) was... [DOC] [TLE] Tetrapod - Wikipedia [PAR] The surviving six are: Lissamphibia: frogs and toads, newts and salamanders, and caecilians. Lepidosauria: tuataras, lizards, amphisbaenians and snakes. Testudines: turtles and tortoises. Crocodilia: crocodiles, alligators, caimans and gharials. Aves: modern birds. Mammalia: mammals. [DOC] [TLE] Classification of Living Things: Classes of Vertebrates [PAR] includes all of the familiar large animals and some rare and unusual ones as well
. The 7 living classes of ... and a frog. Salamander and frog (class Amphibia)... [DOC] [TLE] Amphibians - body, used, water, process, Earth, life, characteristics ... [PAR] Amphibians are in the class Amphibia, which includes over 3,500 species. They 
are further divided into three orders: Anura (frogs and toads), Urodela (
salamanders and newts), and ... Amphibians were the first vertebrates (animals 
with backbones) to live on land. However ..... I think our common ancestor is all 
amphibians. [DOC] [TLE] Adaptations of Desert Amphibians & Reptiles [PAR] Amphibians and reptiles have many different adaptations that allow them to live 
in deserts, ... Before vertebrate animals adapted to specific terrestrial habitats, 
such as deserts, ... Tiger salamanders and lowland leopard frogs enter the desert 
only near ... Virtually all of these adaptations were inherited from tropical 
ancestors... [DOC] [TLE] Diversity of Vertebrates [PAR] Two pairs of jointed locomotor appendages, which can include fins (pectoral ... 
Amphibia - frogs, toads, salamanders, and caecilians ... Vertebrates, among all 
species of animals in the world, have the best fossil ... Ancestral forms of this 
class were the Ostracoderms, which are extinct, but .... contains most modern 
reptiles. [DOC] [TLE] amphibian | animal | Britannica.com [PAR] May 17, 2016 ... Amphibian (class Amphibia), any member of the group of vertebrate animals ... 
nor any of the extinct groups of amphibians were the ancestors of the group of 
tetrapods ... are not the intermediate step in the evolution of reptiles from fishes. 
.... Most species of lungless salamanders (family Plethodontidae), the... [DOC] [TLE] Class Amphibia - USD Biology [PAR] 3 Orders: Anura = frogs and toads, Urodela = salamanders, Gymnophiona ... 
Initially they were rather small animals, but later forms were as long as 2 meters. 
Reptiles (Class Reptilia) first appear in the fossil record in the Carboniferous (~
320 mya). ... Includes basal Order Eosuchia (appeared in early Permian, extinct 
by late... [DOC] [TLE] Chapter 20 [PAR] Amphibians were the first terrestrial vertebrates, followed by the reptiles, which 
were successful and .... Sharks, along with skates and rays, belong to the class 
Chondrichthyes. ... This group includes the ancestors of the first tetrapods (four-
legged animals). ... The amphibians include frogs, salamanders, and caecilians. [DOC] [TLE] Amphibians, Reptiles and Fish - National Wildlife Federation [PAR] Amphibians are frogs, toads, salamanders, caecilians and newts. ... Reptiles. To 
identify an animal as a reptile, it should have each of these characteristics: 
Reptiles ... Amphibians are the most threatened class of animals in nature. They 
are... [DOC] [TLE] What is the difference between a reptile and an amphibian? | eNotes [PAR] May 11, 2010 ... They either have four legs or descended from four limber ancestors. ... Some 
examples of amphibians are: frogs, toads, salamanders, and newts. ... Some of 
the major species of animal in in this class are frogs, toads, salamanders, and 
caecilians. ... Reptiles include alligators, crocodiles, turtles, and snakes. [DOC] [TLE] Biological Diversity 9 - Estrella Mountain Community College [PAR] The class Crinoidea includes about 600 species of crinoids, the stalked sea "lilies
" and the .... embryology indicates echinoderms and chordates share a common

Question: Animals of this class that includes frogs & salamanders were the ancestors of reptiles
Answer: Amphibians