Order Calamopityales
Parent taxon: Ginkgoopsida according to S. V. Meyen 1984
See also Taylor et al. 2008
Sister taxa: Asterophyllum, Callistophytales, Caytoniales, Czekanowskiales, Dactylophyllum, Ephedrales, Ginkgoales, Karkeniales, Leptostrobales, Linguifolium, Pentoxylales, Umaltolepididae
Subtaxa: Calamopityaceae Diichnia
Distribution: