Sawdoniaceae is a family of extinct zosterophylls. The zosterophylls were among the first vascular plants in the fossil record, and are considered to share an ancestor with the living lycophytes. The family is recognized by some sources, and placed in the Sawdoniales. Other sources do not recognize the family, and place some of its members in the family Gosslingiaceae.
Genera Genera that have been placed in this family by Kenrick and Crane in 1997 are shown in the table below, along with their treatment by Hao and Xue in 2013. Genus Hao & Xue (2013) †Crenaticaulis Banks & Davis Gosslingiaceae †Sawdonia Hueber Gosslingiaceae †Konioria Zdebska incertae sedis †Anisophyton unplaced as to family †Deheubarthia unplaced as to family †Serrulacaulis unplaced as to family
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