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:

The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2024, Columbia University Press. All rights reserved.

See more Encyclopedia articles on: Vertebrate Zoology