Order Laminariales (brown algae)
Parent taxon: Phaeophyceae according to E. Taylor et al. 2008
Sister taxa: Chordites, Ectocarpales, Fucales, Fucus, Limnophycus, Staurofucus
Subtaxa: Halophytis Lessoniaceae
Distribution:
• Miocene of United States (2: California collections)
• Oligocene of United States (1: Washington)
Total: 3 collections each including a single occurrence