Explanation of Plates. AT5 
PLATE LII. 
Fic. 1.—Daubreeia. Outer edge of the frond. This specimen shows very 
distinctly the pitting of the surface of the frond described in the text 
as possibly fructification. From the Elmdale at Onaga. No. 9682, 
United States National Museum, transmitted for study by Mr. David 
White. At the right of figure 1 is a well-preserved specimen of 
Trigonocarpum schultzianum from the Le Roy shales, Lawrence. 
University of Kansas collection. 
Fig. 2.—Alethopteris grandini(?) at the left, and Daubreeia patere- 
‘  formis at the right. Alethopteris grandini ‘from the Seranton shales 
at Scranton. Daubreeia from the Elmdale formation at Onaga. No. 
9667, United States National Museum, transmitted for study by 
Mr. David White. 
PLATE LIII. 
Fic. 1.—Nueropteris rarinervis Bunb. From the Cherokee shales, Lan- 
sing. No. 3001, University of Kansas collection. Natural size. 
Fig. 2.—Neuropteris ovata Hoffm. From the Cherokee shales, Lansing. 
University of Kansas collection. Natural size. 
Fig. 3.—Oligocarpia kansasensis Sellards. From the Lawrence shales, 
Twinmound. University of Kansas collection. Natural size. 
Fig. 4.—Sphenophyllum cuneifolium. From the Lawrence shales, Twin- 
mound. University of Kansas collection. 
Fig. 5.—Annullaria sphennophylloides. From the Cherokee shales, Lan- 
sing. Natural size. : 
Fig. 6.—Macrostachya infundibuliformis. From the Cherokee shales, 
Lansing. University of Kansas collection. 
PLATE LIV. 
Fic. 1.—Neuropteris desorii. From the Le Roy shales at the Haver- 
kampf farm, near Lawrence. Natural size. 
Fig. 2.—Pseudopecopteris obtusiloba. From the Cherokee shales, Lan- 
sing. Natural size. 
Fie. 3.—Sphenopteris pinnatifida. From the Lawrence shales at Twin- 
mound. Natural size. 
Fig. 4.—Pseudopecopteris obtusiloba. From the Cherokee shales, Lan- 
sing. Natural size. 
PLATE LV. 
Fic. 1.—Alethopteris grandini. From Le Roy shales, Blue Mound. Nat- 
ural size. 
Fic. 2.—Mariopteris obtusiloba. From the Le Roy shales, Haverkampf 
farm, near Lawrence. Natural size. 
Fic. 3.—Aphlebia sp. From the Le Roy shales, Haverkampf farm, near 
Lawrence. Natural size. 
Fic. 4.—Daubreeia patereformis. From the Elmdale formation at Onaga. 
Natural size. Loaned, for illustration, from the National Museum. 
