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 LXXI  (links in the Figure numbers point to Lesquereux's descriptions in the text)

Figure Scientific Name 1 - 3 Sigillaria laevigata, Bt. 4 Sigillaria Pittstoniana, Sp. nov. 5 Sigillaria marginata, Bt. 6 Sigillaria Sillimanni, Bt. 7, 8 Sigillaria ovalis, Sp. nov.