Zamia gigas (Lindley & Hutton, 1831) species accepted

Zamites truncatus Zeiller, 1903 species accepted

Zamites graminioides Emmons, 1856 species accepted

Zamites vogesiacus Schimper & Mougeot, 1844 species accepted

Irites alaskana Lesquereux, 1887 species synonym

Zamites wendyellisae Watson & Sincock, 1992 species accepted

Zamites tatianae Watson & Sincock, 1992 species accepted

Zamites notokenensis Watson & Sincock, 1992 species accepted

Zamites nicolae Watson & Sincock, 1992 species accepted

Zamites dowellii Watson & Sincock, 1992 species accepted

Zamites corderi Watson & Sincock, 1992 species accepted

Zamites carruthersii Seward species accepted

Zamites arcticus Göppert, 1863 species accepted

Zamites manoniae Watson & Sincock, 1992 species accepted

Zamites californica MacGinitie, 1941 species accepted

Zamites gigas (Lindley & Hutton, 1831) species synonym

Zamites velderi Brown, 1911 species accepted

Zamites borealis Heer, 1873 species accepted

Zamites acutipennis Heer, 1872 species accepted

Zamites alaskana Fontaine, 1888 species accepted

Zamites montana Dawson, 1885 species accepted

Zamites brevipennis Heer, 1899 species accepted

Palaeozamia megaphylla (Phillips, 1871) species accepted

Zamites distantinervis Fontaine, 1889 species accepted

Carpolithes meridionalis Dawson, 1893 species accepted

Zamites megaphyllus (Phillips, 1871) species synonym

Zamites pateri J.Kvacek, 2022 species accepted

Zamia washingtoniana Ward, 1895 species synonym

Zamites powelli Fontaine, 1890 species accepted

Zamites subfalcatus Fontaine, 1889 species synonym

Zamites occidentalis Newberry, 1859 species accepted

Zamites apertus Newberry, 1891 species accepted

Zamites crassinervis Fontaine, 1889 species accepted

Zamites yorkensis Fontaine, 1900 species accepted

Zamites tenuinervis Fontaine, 1905 species accepted

Zamites bayeri Kvacek, 1997 species accepted

Zamites pennsylvanicus Fontaine, 1900 species accepted