Any lobe-finned fish, of the class Sarcopterygii, including the lungfish and coelacanths(noun)
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Use "sarcopterygian" in a sentence
"There are several lineages of sarcopterygian fish that developed tetrapod like adaptations according to evolutionists."
"Tiktaalik and Sauripterus reflect what is essentially an elaborated version of the general sarcopterygian condition."
"My understanding is that mudfish translated in several dictionaries as “bowfin” are in fact actinopterygian and not sarcopterygian which the eusthenopteron must be."