marsipobranch
/ˈmɑːsɪpə(ʊ)braŋk/Zoology
adjective
Having pouched gills. Formerly also: relating to or belonging to the class Marsipobranchii.
Origin
Mid 19th century (in an earlier sense). From scientific Latin Marsipobranchii, former group name from ancient Greek μάρσιππος pouch + βράγχια gills.