Angiospermae - Saxifragales - Saxifragaceae
Parent taxon: Saxifragales according to The Angiosperm Phylogeny Group 2016
See also Knowlton 1919, Knowlton 1926, Mabberley 2000, MacGinitie 1941 and Taylor et al. 2008
Sister taxa: Altingiaceae, Ambaroxylon, Aphanopetalaceae, Cercidiphyllaceae, Crassulaceae, Cynomoriaceae, Daphniphyllaceae, Escalloniiphyllum, Grossulariaceae, Haloragaceae, Haloragis, Hamamelidaceae, Iteaceae, Paeoniaceae, Penthoraceae, Peridiscaceae, Tetracarpaeaceae
Subtaxa: Adenanthemum Hydrangea Hydrangeiphyllum Philadelphus Saxifraga Saxifragaceaecarpum Saxifragispermum Saxifragites Stephanostemon
Ecology: "photoautotroph"
Distribution:
• Quaternary of Canada (1: Nunavut collection), Greenland (1), India (2), Japan (1)
• Miocene to Pliocene of Japan (1)
• Miocene to Oligocene of United States (1: Montana)
• Miocene of Argentina (1), China (2), Japan (1), United States (6: California, Idaho, Nevada, Oregon, Washington)
• Oligocene to Miocene of Germany (1), United States (1: Montana)
• Oligocene of Argentina (1), Germany (1), United States (4: Oregon)
• Eocene to Miocene of Argentina (1)
• Eocene of China (1), the United Kingdom (1), United States (6: California, Colorado, Oregon, Wyoming)
• Paleocene of United States (2: Colorado, Wyoming)
• Cretaceous of Canada (1: British Columbia)
Total: 37 collections including 41 occurrences