Amphibians Around the World

Just how many species of amphibians are there in the world? Current estimates of amphibian species are approximately 5,383. This number is constantly changing though as new species are discovered, some species become extinct, and changes in classification may combine species or split one species into several different species. Here are the current numbers:

 

Scientific Order Common Name Known Species
Anura
Frogs & Toads
4963
Caudata
Salamanders
521
Gymnophiona
Caecilians
168
 
 
 
Total Amphibian Species
 
5652

Table data compiled from AmphibiaWeb (Accessed: 2002).

 

Frog Families of the World

Dart Blue FrogThere are 29 families which make up the Order Anura. Ten of these families have species represented in the United States, some introduced. Five of these families have representatives in Tennessee, none introduced. Twenty one percent of the anuran species of the United States occur in Tennessee. Less than one percent of the frog species of the world occur in Tennessee, yet they are one of our most important ecological indicators.

 

 

 

Family Known Species In World Species In United States Species In Tennessee
Allophrynidae
1
0
0
Arthroleptidae
78
0
0
Ascaphidae
2
2
0
Bombinatoridae
11
0
0
Brachycephalidae
6
0
0
Bufonidae
457
23
2
Centrolenidae
139
0
0
Dendrobatidae
219
1*
0
Discoglossidae
11
0
0
Heleophrynidae
6
0
0
Hemisotidae
9
0
0
Hylidae
851
29*
10
Hyperoliidae
253
0
0
Leiopelmatidae
4
0
0
Leptodactylidae
1130
7*
0
Mantellidae
151
0
0
Megophryidae
128
0
0
Microhylidae
364
3
1
Myobatrachidae
124
0
0
Nasikabatrachidae
1
0
0
Pelobatidae
11
7
1
Pelodytidae
3
0
0
Pipidae
30
1*
0
Pseudidae
9
0
0
Ranidae
732
29*
7
Rhacophoridae
220
0
0
Rhinodermatidae
2
0
0
Rhinophrynidae
1
1
0
Scaphiophryninae
9
0
0
Sooglossidae
4
0
0
 
 
 
 
Totals
4963
103
21

*Includes introduced species. Table data compiled from AmphibiaWeb (Accessed: 2002).

 

Salamander Families of the World

Marble NewtThere are 10 families which make up the Order Caudata. Nine of these families have species represented in the United States. Seven of these families have representatives in Tennessee. Almost thirty three percent of the salamander species in the United States occur in Tennessee. Eleven percent of the salamander species of the world occur in Tennessee. The Great Smoky Mountains National Park is known as "The Salamander Capitol of the World."

 

 

Family Known Species In World Species In United States Species In Tennessee
Ambystomatidae
30
15
6
Amphiumidae
3
3
1
Cryptobranchidae
3
1
1
Dicamptodontidae
4
4
0
Hynobiidae
44
0
0
Plethodontidae
360
136
46
Proteidae
6
5
1
Rhyacotritonidae
6
4
0
Salamandridae
63
6
1
Sirenidae
4
4
1
 
 
 
 
Totals
521
178
57

Table data compiled from AmphibiaWeb (Accessed: 2002).