Science / Biology / Lobe-Finned: Fish with muscular fins containing large jointed bones that attach to the body; one of the two main types of bony fish.
Science / Biology / Lungfish: A type of lobe-finned fish that breathe by a modified swim bladder (or lung) as well as by gills. MORE
Science / Biology / Crossopterygians: A type of lobe-finned fish with lungs that were ancestral to amphibians. MORE