SECOND GEOLOGICAL SURVEY OF PENNSYLVANIA - REPORT OF PROGRESS
P. DESCRIPTION OF THE COAL FLORA OF THE CARBONIFEROUS FORMATION
IN
PENNSYLVANIA AND THROUGHOUT THE UNITED STATES - VOL.III
BY LEO LESQUEREUX; ©1884
"Fossil Flora and Fauna of the Pennsylvanian Period, Will County, Illinois"
by George Langford (1876-1964)
Spenopteris plicata, Lesquereux
Sphenopteris plicata.  Shown at approximately the same size as in George Langford, Sr.'s 1/1 sketch at right.
Leo Lesquereux, Vol.III, Plate CXI, No.28.
Sphenopteris plicata, after Langford


Sphenopteris plicata. Photograph of collected fossil (left) and sketch of vein structure (below)

George Langford, Sr. sketch of Sphenopteris plicata
George Langford, Sr.: pp71-73.
To view any of the images above at full scanned resolution, right-click on the image and select, view image.