Suprageneric

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Total: 15

supragenus valid

Family Zygopteridaceae D.H. Scott Ann. Bot. (Oxford), 26(1): 64. Jan 1912

supragenus valid

Family Rhetinangiaceae D.H. Scott Stud. Foss. Bot. ed. 3, 2: 240. 28 Jun 1923

supragenus valid

Class Cycadeoideopsida D.H. Scott Stud. Foss. Bot. ed. 3, 2: 320. 28 Jun 1923

supragenus unavailable

Family Poroxylaceae D.H. Scott Stud. Foss. Bot. ed. 3, 2: 243. 28 Jun 1923

supragenus valid

Family Stenomyelaceae D.H. Scott Stud. Foss. Bot. ed. 3, 2: 240. 28 Jun 1923