Family Onocleaceae Pichi-Sermolli 1970 (fern)

Polypodiopsida - Polypodiales - Polypodiidae

Parent taxon: Aspleniineae according to PPG. I 2016

Sister taxa: Aspleniaceae, Thelypteridaceae

Subtaxa: Onoclea

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Distribution:

• Eocene of United States (1: North Dakota collection)

• Clarkforkian of United States (1: North Dakota)

• Paleocene of Canada (6: Saskatchewan), United States (11: Montana, North Dakota, Wyoming)

• Cretaceous of Canada (2: Alberta, British Columbia), United States (2: South Carolina, Wyoming)

Total: 23 collections each including a single occurrence

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