Annual report of the United States Geological Survey to the Secretary of the Interior . FERNS AND FERN ALLIES FROM THE TRIAS OF PENNSYLVANIA LIBRARY uWERsrrVonLUNOis. PLATE XXVI. PLATE XXVI. Page. Fig. 1. Anomozamites pkinceps (Oldh. and Morr.) Sehirnp? 242 Figs. 2, 3. Pterophyllum in^equale Font 242 Fig. 3. Pinnule of Fig. 2, TWENTIETH ANNUAL REPORT PART II PL. XXVIU. 8. GEOLOGICAL SURVEY. CYCADACEOUS PLANTS FROM THE TRIAS OF PENNSYLVANIA. PLATE XXVII. PLATE XXVII. Page. Ctenophyllum grandifolium Font 243 Figs. 1-5. Separated parts of the same leaf. Fig. 4. Portion of pinnule, en
Annual report of the United States Geological Survey to the Secretary of the Interior . FERNS AND FERN ALLIES FROM THE TRIAS OF PENNSYLVANIA LIBRARY uWERsrrVonLUNOis. PLATE XXVI. PLATE XXVI. Page. Fig. 1. Anomozamites pkinceps (Oldh. and Morr.) Sehirnp? 242 Figs. 2, 3. Pterophyllum in^equale Font 242 Fig. 3. Pinnule of Fig. 2, TWENTIETH ANNUAL REPORT PART II PL. XXVIU. 8. GEOLOGICAL SURVEY. CYCADACEOUS PLANTS FROM THE TRIAS OF PENNSYLVANIA. PLATE XXVII. PLATE XXVII. Page. Ctenophyllum grandifolium Font 243 Figs. 1-5. Separated parts of the same leaf. Fig. 4. Portion of pinnule, enlarged to show forking nerves. 444
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