Brian J. Axsmith

Umkomasia asiatica S.Q.Zan, Axsmith, N.C.Fraser, F.X.Liu et D.H.Xing 2008

Umkomasia uniramia Axsmith, Ed.L.Taylor, T.N.Taylor et Cúneo 2000

Zan, S., Axsmith, B. J., Fraser, N. C., Liu, F. & Xing, D. (2008): New evidence for laurasian corystosperms: Umkomasia from the Upper Triassic of Northern China. – Rev. Palaeobot. Palynol. 149(3–4): 202–207.

Axsmith, B. J., Taylor, E. L., Taylor, T. N. & Cúneo, N. R. (2000): New perspectives on the Mesozoic seed fern order Corystospermales based on attached organs from the Triassic of Antarctica. – Am. J. Bot. 87(6): 757–768.