ichthyopterygium

== English == === Etymology === From New Latin ichthyopterygium, from Ancient Greek ἰχθύς (ikhthús, “fish”) + πτερύγιον (pterúgion, “fin”). By surface analysis, ichthyo- +‎ pterygium. === Noun === ichthyopterygium (plural ichthyopterygia) (comparative anatomy, obsolete) fish fin.