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 XXVIII (links in the Figure numbers point to Lesquereux's descriptions in the text)
Figure
Scientific Name
1 - 3a
Danaeites Emersoni, Sp. nov.
4 - 6a
Alethopteris Gibsoni, Sp. nov.
7, 7a
Alethopteris lonchitica, Bt.
Lesquereux - Plate XXVIII