Revised phylogeny and functional interpretation of the Edrioasteroidea based on new taxa from the Early and Middle Ordovician of western Utah / Thomas E. Guensburg --, James Sprinkle --.

n.s. no.29(1994)

The living plant; a description and interpretation of its functions and structure, by William F. Ganong.

1913

Reconstruction and interpretation of Brittsia problematica D. White (Fern, Pennsylvanian) / Hermann W. Pfefferkorn --.

v.33:no.17(1976)