†Halimeda Lamouroux 1812 (green alga)
Bryopsidophyceae - Caulerpales - Halimedaceae
Parent taxon: Halimedaceae according to D. Bassi 1998
Sister taxa: Alpinocodium, Boueina, Brandneria, Calabricodium, Collarecodium, Egericodium, Eugonophyllum, Felixporidium, Hydracara, Madonicodium, Nipponophycus, Trelonella, Saccamminopsis, Palaeoporella, Cayeuxia
Subtaxa: none
Ecology: stationary epifaunal "photoautotroph"