Parent taxon: Algae according to V. S. Perez Loinaze et al. 2023
See also Chauhan 1991 and Perez Loinaze et al. 2025
Sister taxa: Algacites, Archidesmus loganensis, Bartenia, Byssus, Cancellophycus, Characeales, Collenia, Conferva, Confervites, Conophyton, Cryptozoon, Delesseria, Dendrophycus, Dictyophycus, Elainabella, Eoholynia, Fucoides, Gilbertina, Gyrodendron, Halymenites, Jurusania, Lichen, Loperia, Myelophycus, Palaeodictyon, Petrophyton, Retiphycus, Tremella, Ulva, Zygnemataceae
Subtaxa: Botryococcus
Distribution:
• Quaternary of Australia (22 collections), India (11), Italy (1), Portugal (1), United States (2: North Carolina, Washington)
• Miocene to Pliocene of Falkland Islands (Malvinas) (2)
• Miocene of Argentina (3), Colombia (1), India (2), New Zealand (3), Türkiye (1)
• Oligocene to Miocene of Argentina (6)
• Oligocene of Argentina (1), Azerbaijan (1)
• Eocene to Miocene of Argentina (1)
• Eocene of Antarctica (1), Germany (22), Myanmar (3)
• Paleocene of Argentina (18), India (1)
• Paleogene of Argentina (1), India (1)
• Cretaceous to Paleogene of Argentina (2), New Zealand (2)
• Cretaceous of Antarctica (5), Argentina (66), Brazil (6), Chile (1), Denmark (1), Nigeria (21), South Sudan (43), the United Kingdom (4)
• Jurassic of Morocco (1), the Russian Federation (2), Switzerland (1), the United Kingdom (7)
• Permian of Canada (2: Nunavut), Germany (5), United States (1: Kansas)
• Carboniferous of United States (7: Kansas)
Total: 282 collections including 289 occurrences