Chordata: Class Sacropterygii

Class Sacropterygii

The second class of bony fish, the fleshy-finned fish, have thick fins with supporting bones. The only survivors of this group are the coelacanths, or lobefins, which have a vestigial lung, and the freshwater lungfishes of drought-ridden areas, which can crawl over land in search of water and even live out of water for several years. Early fleshy-finned fish gave rise to the first land vertebrates, the amphibians.

Sections in this article:

Introduction
Class Mammalia
Class Aves
Class Reptilia
Class Amphibia
Class Sacropterygii
Class Actinopterygii
Class Chondrichthyes
Class Placodermi
Classes Myxini and Hyperoartia
Subphylum Vertebrata
Subphylum Cephalochordata
Subphylum Urochordata
Bibliography

See more Encyclopedia articles on: Vertebrate Zoology