cros·sop·te·ryg·i·an 
(krŏ-sŏp′tə-rĭjē-ən)
(krŏ-sŏp′tə-rĭjē-ən)n.
Any of various lobe-finned fishes, including the coelacanths but usually not the lungfishes. No longer in scientific use.
[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.]
cros·sop′te·rygi·an adj.