SECOND GEOLOGICAL SURVEY OF PENNSYLVANIA - REPORT OF PROGRESS
P. ATLAS TO THE COAL FLORA OF PENNSYLVANIA
AND OF THE
CARBONIFEROUS FORMATION THROUGHOUT THE UNITED STATES
BY LEO LESQUEREUX; ©1879
87 Plates and Their Captions:
Scans and Webpage
©George Langford III, 2010
Plate LXXVII  (links in the Figure numbers point to Lesquereux's descriptions in the text)
Figure
Scientific Name
1 - 2a
Cordaites grandifolius, Lx.
3, 3a
Cordaites diversifolius, Lx.
4 - 4b Cordaites gracilis, Lx.
Lesquereux - Plate LXXVII