Cycadopsida - Cycadales - Zamiaceae

PaleoDB taxon number: 169684

Full reference: R. S. Hill. 1980. Three New Eocene Cycads from Eastern Australia. Australian Journal of Botany 28:105-122

Belongs to Pterostoma according to R. S. Hill 1980

Sister taxa: Pterostoma douglasii, Pterostoma hirsutus, Pterostoma zamioides