Annual report of the United States Geological Survey to the Secretary of the Interior . es. Lykens coal NO. 5 (?), Lincoln colliery. [surer T/ykena division—Lower zone. Neckoiteris Pocahontas var. centias I). W.() Fig. 2. Apical fragment, showing triangular form of upper pinnules. From Lykens coal No. i> at Fast Brookside ;>. From Lykens coals No. 5 or at Kalniia colliery. Fig. :5<». Pinnule from the original of fig. 3, showing the fine nervation, which isCallipteridioid at the base. Twice the natural size. Fig. 4. A fragment with lobate pinnules. From Lykens co
Annual report of the United States Geological Survey to the Secretary of the Interior . es. Lykens coal NO. 5 (?), Lincoln colliery. [surer T/ykena division—Lower zone. Neckoiteris Pocahontas var. centias I). W.() Fig. 2. Apical fragment, showing triangular form of upper pinnules. From Lykens coal No. i> at Fast Brookside ;>. From Lykens coals No. 5 or at Kalniia colliery. Fig. :5<». Pinnule from the original of fig. 3, showing the fine nervation, which isCallipteridioid at the base. Twice the natural size. Fig. 4. A fragment with lobate pinnules. From Lykens coal No. 5 at the Lincolnmine. Lower Ljfhens division—Lower zone. Neukoitekis Pocahontas var. ]). W. (Page Mm.) Fig. 5. Fragment showing Odontopteroid pinnules of the upper pinna. Bed D, 710 feet below the Twin coal in the gap at 5a. detail showing the nervationof two of the pinnules illustrated in fig. 5. Twice the natural size. Jjjirrr Li/ketis <lirixioii. 920 U. S. GEOLOGICAL SURVEY TWENTIETH ANNUAL REPORT PART II PI. CLXXXVIII. SPHENOPTERIS AND Lykens division. UNIVERSITY of \LUNO\ PLATE CLXXXIX. 921 PLATE CLXXXIX. M AKloiTKHlN KREkfOPTEROIDKS 1). \Y.(Page Kg. L. Portion of slah containing segment of rachis, showing lateral compound ]>inna. Lykens coal X. 5, Brookside 2. Fragment in which the pinnules are more deeply dissected and flattened. From the same 3. Fragment from the large lateral pinna shown in fig. 1. Fig. 3/ Pinnule of the same specimen enlarged to show the nervation. Twice thenatural size. Lower Lykens division—Lower zone. Neuroptkkis Pocahontas I). \V. (Page 888.) Fig. 4: Specimen showing the characteristic form and development, of the pinnulesof this species. From the roof of the Pocahontas coal near CYozers, inthe Great Flat Top coal held, West Virginia. Fig. 4d. Pinnule of the same specimen enlarged to show the nervation. Twice thenatural size. Age of the, L
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