Called crossopterygians, or lobe-fins, they had bony heads, sharp teeth, and simple lungs as well as gills.
(Called crossopterygians, or lobe-fins; had; bony heads, sharp teeth, and simple lungs as well as gills) (they; bony; heads, sharp teeth, and simple lungs as well as gills)
Called crossopterygians, or lobe-fins they
had bony
bony heads, sharp teeth, and simple lungs as well as gills
heads, sharp teeth, and simple lungs as well as gills