Author:

Leary,R.L.;Mickle,J.E.

Year:

1989

Title:

Porostrobgus nathorstii sp.nov.; A new species of Lycopsid cone from the Early Pennsylvanian of Illinois.

Reference:

Leary,R.L. et al. (1989) Porostrobgus nathorstii sp.nov.; A new species of Lycopsid cone from the Early Pennsylvanian of Illinois. American Journal of Botany Vol. 76 # 11 P. 1638- 1645

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