See lobe-finned fish.
[From New Latin Crossopterygiī, group name : Greek krossoi, fringe (from krossōtos, fringed, from krossai, projecting stone blocks) + Greek pterugia, fins, pl. diminutive of pterux, pterug-, wing. See pterygoid.]
crossopterygian cros·sop'te·ryg'i·an adj.



