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 LXXII  (links in the Figure numbers point to Lesquereux's descriptions in the text)
Figure
 Scientific Name
Reference
 Figure
 Scientific Name
 Reference
1
 Sigillaria hexagona, Bt.
9
 Sigillaria attenuata, Lx. Ibid., Pl. ii, f.3.
2 - 4b
 Sigillaria tessellata, Bt.
10
 Sigillaria Leptoderma, Sp. nov.
5, 6
 Sigillaria mamillaris, Bt.
11
 Sigillaria Volzii, Bt.
7, 8
 Sigillaria Lescurii, Schp. Potts. Cat., Pl. ii, f.1, 2.
 12 - 12b
 Sigillaria Lacoei, Sp. nov.
Lesquereux - Plate LXXII