Parent taxon: Bennettitales according to A. M. Blazer 1975
Sister taxa: Amarjolia, Anomozamites, Bennetticarpus, Bennettistemon, Bennettitaceae, Bennettitaepollenites, Bennettiteaepollenites, Bennettitolepis, Bysmatospermum, Coreanophyllum, Cycadeospermum, Cycadolepis, Dictyozamites, Guptioxylon, Leguminanthus, Lerouxia, Moltenia, Monanthesia, Nilssoniopteris, Ontheanthus, Ontheostrobus, Otozamites, Palaeanthus, Piroconites, Pseudocycas, Pterophyllum, Ptilophyllum, Purioxylon, Rajmahalia, Sahnioxylon, Sturiella, Tyrmia, Tysonia, Vardekloeftia, Weltrichia, Wielandiella, Williamsonia, Williamsoniaceae, Williamsoniella, Wonnacottia, Zamites
Subtaxa: Williamsonianthus keuperianus
Type: Williamsonianthus keuperianus
Distribution: found only at Basel (Triassic of Switzerland)
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.