Queensland Museum, Australia
Type specimens
Holotype QMF58844 for Williamsonia eskensis McLoughlin, C.Pott et Sobbe
Holotype QMF55954 for Williamsonia durikaiensis McLoughlin, C.Pott et Sobbe
Holotype QMF56037 for Cycadolepis ferrugineus McLoughlin, C.Pott et Sobbe
Holotype QMF543 for Equisetites moretonensis Shirley