Sirenoidei
plural noun
Si·ren·oi·dei
ˌsīrə̇ˈnȯidēˌī
variants or less commonly Sirenoidea
-ēə
in some classifications
: a group of lungfishes containing the genera Neoceratodus and Lepidosiren and some extinct forms from the Mesozoic
Word History
Etymology
New Latin, from Latin siren + New Latin -oidei, -oidea