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 LVI  (links in the Figure numbers point to Lesquereux's descriptions in the text)
Figure
Scientific Name
Reference
1 - 1a
Pseudopecopteris spinulosa, Lx.
Geol. Rept. of Illinois, iv, Pl. xi, f.1, 2.
2 - 3b
Pseudopecopteris hymenophylloides, Lx.
Ibid., Pl. x, f.1 - 4.
4 - 4a
Sphenopteris splendens, Lx.
Ibid., Pl. xix, f.2.
5, 5b
Sphenophyllum cornutum, Lx.
Same specimen as f.4.
Lesquereux - Plate LVI