Ulvophyceae - Bryopsidales - Halimedaceae
Parent taxon: Bryopsidales according to K. Tripalo 2017
See also Bassi 1998, Forsythe et al. 2002 and Senowbari-Daryan and Zamparelli 2005
Sister taxa: Aternasusaceae, Codiaceae, Inocladus, Pseudoudoteaceae, Thalassocystis, Udoteaceae
Subtaxa: Alpinocodium Boueina Brandneria Calabricodium Collarecodium Egericodium Eugonophyllum Felixporidium Halimeda Hydracara Madonicodium Nipponophycus
Ecology: stationary epifaunal "photoautotroph"
Distribution:
• Quaternary of Australia (11 collections), the Bahamas (4), Belize (11), China (1), Cook Islands (1), French Polynesia (12), Greece (3), Jamaica (2), Japan (4), Kenya (6), Madagascar (1), Maldives (1), the Marshall Islands (8), Mauritius (2), Mayotte (1), the Netherlands Antilles (1), New Caledonia (3), Palau (1), Panama (1), Puerto Rico (1), the Seychelles (8), Turks and Caicos Islands (3), United States (7: Florida, Hawaii), Virgin Islands (1)
• Pliocene to Pleistocene of Guam (1)
• Pliocene of Australia (1), the Marshall Islands (1)
• Miocene of Algeria (1), Australia (4), Austria (1), Cyprus (2), Guam (1), India (6), Indonesia (1), Israel (1), Italy (5), Malaysia (1), Malta (2), the Marshall Islands (2), Morocco (4), Northern Mariana Islands (1), Romania (1), Spain (7), Türkiye (6)
• Eocene of Australia (2), Brazil (7), Greece (1), Guam (1), India (24), Italy (1), Libya (1), Maldives (2), the Marshall Islands (1), Morocco (1), Spain (1)
• Paleocene to Eocene of India (8), Slovakia (1)
• Paleocene of China (10), Egypt (1), India (3), Italy (2), Morocco (1), Oman (7), Slovakia (2)
• Cretaceous of Egypt (13), France (13), Germany (2), India (1), Iran (3), Iraq (18), Jordan (3), Oman (1), Portugal (18), Romania (9), Serbia (1), Slovakia (1), Somalia (1), Spain (3), Venezuela (1)
• Jurassic of Algeria (1), Austria (2), Czechia (1), Indonesia (1), Italy (1), Mexico (1)
• Triassic of Austria (3), Greece (1), Hungary (1), Iran (2), Italy (12), Japan (1), Oman (1), Türkiye (1), United States (2: Idaho, Oregon)
• Permian of Canada (1: Nunavut), Greece (2), Italy (1), Norway (1), Oman (1), Slovenia (1), Thailand (3), Türkiye (1), United States (7: Idaho, Nevada, New Mexico, Texas)
• Carboniferous of Austria (1), China (2), Japan (2), Mexico (1), Spain (1), Türkiye (6), United States (14: Idaho, Kansas, Nebraska, New Mexico, Oklahoma, Texas)
Total: 384 collections including 414 occurrences