. An Early Pennsylvanian flora with megalopteris and noeggerathiales from west-central Illinois. Paleobotany; Paleobotany; Megaloptera; Flora (biologie); Fossielen. EARLY PENNSYLVANIA FLORA. FROM WEST-CENTRAL ILLINOIS IT Palaeopteridium reussii (Ettingshausen) Kidston Text fig. TA-C; pi. k9 figs. 1-5 Synonymy 1852 Asplenites Reussii, Ettingshausen, p. l6, pi. 1, figs. 8 and 9 I869 Palaeopteris Reussii, Schimper, p. U78 v. 1875 Archaeopteris stricta, Andrews, p. Ul8, pi. 1+9, figs. 2, 2a v. 188k Archaeopteris denti- culata, Lesquereux, P. 77*+ 1891+ Archaeopteris Reussii , Kidston, p. 2^2 191^
. An Early Pennsylvanian flora with megalopteris and noeggerathiales from west-central Illinois. Paleobotany; Paleobotany; Megaloptera; Flora (biologie); Fossielen. EARLY PENNSYLVANIA FLORA. FROM WEST-CENTRAL ILLINOIS IT Palaeopteridium reussii (Ettingshausen) Kidston Text fig. TA-C; pi. k9 figs. 1-5 Synonymy 1852 Asplenites Reussii, Ettingshausen, p. l6, pi. 1, figs. 8 and 9 I869 Palaeopteris Reussii, Schimper, p. U78 v. 1875 Archaeopteris stricta, Andrews, p. Ul8, pi. 1+9, figs. 2, 2a v. 188k Archaeopteris denti- culata, Lesquereux, P. 77*+ 1891+ Archaeopteris Reussii , Kidston, p. 2^2 191^ Archaeopteris Reussii, Kidston, p. 95, pi. 5, figs. 7, 7a 1923 Palaeopteridium Reus- si9 Kidston, p. 201- 203, pi. 55, figs. 1- 3 v. 19^-9 Palaeopteridium Reus- si9 Arnold, p. 219- 220, pi. 26, fig. 6 Description.—Outline of pin- nules -wedge-shaped, spatulate, or diamond-shaped (text fig. 7A-C). Some pinnules have stalk-like base, some are attached with a larger part of the base. Open dichotomous venation. Veins forking once or Text fig. 7 - Fossil plants from the Spencer Farm Flora. A-C, variation of Palaeopteridium reussii pinnules according to their position on the frond or branch system. D, E, Gul- penia limburgensis pinnules. Bar scales are 5mm Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Leary, Richard L; Pfefferkorn, H. W. , joint author; Illinois State Museum. Urbana : Illinois State Geological Survey
Size: 935px × 2674px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorillinoisstatemuseum, bookcentury1900, booksubjectpaleo
