Parent taxon: Magnoliidae according to G. R. Upchurch et al. 1994
See also Taylor et al. 2008 and Upchurch and Dilcher 1990
Sister taxa: Cronquistiflora, Detrusandra, Didromophyllum, Reynoldsiophyllum, Longstrethia, Acritodromum, Archaeanthus
Subtaxa: Atherospermataceae Calycanthaceae Crassidenticulum Densinervum Gomortegaceae Hernandiaceae Landonia Lauraceae Monimiaceae Olmosoxylon Pabiania Pandemophyllum Patagoxylon Siparunaceae Tetrantheroidea Timothyia
Ecology: "photoautotroph"
Distribution:
• Quaternary of Argentina (3 collections), Australia (8), China (2), France (1), India (5), Japan (2), Laos (1), Trinidad and Tobago (1), United States (1: Florida), Vietnam (1)
• Pliocene to Pleistocene of India (2)
• Pliocene of China (5), Germany (4), United States (1: California)
• Hemphillian of United States (1: California)
• Miocene to Pleistocene of Brazil (1)
• Miocene to Pliocene of Colombia (1), India (7), Japan (4), Mexico (1), Nepal (1), Trinidad and Tobago (2)
• Miocene to Oligocene of United States (1: Montana)
• Miocene of Argentina (6), Australia (1), Brazil (1), Chile (2), China (10), Colombia (3), Costa Rica (1), Ecuador (2), Germany (31), Haiti (1), India (8), Japan (15), Nepal (2), New Zealand (2), Peru (1), Poland (1), Slovakia (1), Switzerland (11), Turkey (1), United States (12: California, Idaho, Montana, Vermont, Washington), Venezuela (4)
• Neogene of China (2), Vietnam (2)
• Oligocene to Eocene of United States (1: Oregon)
• Oligocene to Miocene of Argentina (2), Australia (1), Germany (1)
• Oligocene of Argentina (2), Australia (1), China (1), the Czech Republic (1), Germany (21), India (1), the United Kingdom (1), United States (3: Idaho, Montana, Oregon), Vietnam (1)
• Eocene to Miocene of Argentina (1)
• Eocene to Oligocene of Australia (1), United States (2: Colorado)
• Eocene of Argentina (22), Australia (21), Canada (4: British Columbia), China (9), France (1), Germany (1), India (4), Japan (12), the United Kingdom (13), United States (63: Alaska, California, Colorado, Georgia, Idaho, North Dakota, Oregon, Texas, Washington, Wyoming, Wyoming ), Venezuela (1)
• Clarkforkian of United States (56: North Dakota, Wyoming)
• Paleocene to Eocene of Argentina (1)
• Paleogene of Chile (1), India (2)
• Tertiary of Japan (2), Venezuela (1)
• Paleocene of Argentina (3), Colombia (9), France (1), New Zealand (1), the United Kingdom (3), United States (87: Colorado, Montana, New Mexico, Wyoming)
• Cretaceous to Paleogene of New Zealand (5)
• Cretaceous of Antarctica (2), Argentina (4), Canada (11: Alberta, British Columbia, Saskatchewan), Chile (1), Cuba (2), the Czech Republic (2), Germany (1), Japan (1), Mexico (2), United States (118: California, Colorado, Georgia, Kansas, Maryland, Montana, Nebraska, New Mexico, North Dakota, South Carolina, South Dakota, Virginia, Wyoming)
Total: 684 collections including 1299 occurrences