. The geological history of plants. Paleobotany; 1888. 128 THE GEOLOGICAL HISTORY OF PLANTS. menophyllacem, and the Marattiacece, go back to the coal- formation.* Some of these ferns have the more complex kind of spore-case, with a jointed, elastic ring. It is to be ob-. FiG. 54.—Sphenoptens latior, Dawson. Coal-formation, a, Pinnule magnified, with traces of fructification. serTed, however, that those forms which have a simple spore-case, either netted or membranous, and without annulus, are most common in the Devonian and lowest. Please note that these images are extracted from scanned page
. The geological history of plants. Paleobotany; 1888. 128 THE GEOLOGICAL HISTORY OF PLANTS. menophyllacem, and the Marattiacece, go back to the coal- formation.* Some of these ferns have the more complex kind of spore-case, with a jointed, elastic ring. It is to be ob-. FiG. 54.—Sphenoptens latior, Dawson. Coal-formation, a, Pinnule magnified, with traces of fructification. serTed, however, that those forms which have a simple spore-case, either netted or membranous, and without annulus, are most common in the Devonian and lowest. 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 Dawson, John William, Sir, 1820-1899. New York, D. Appleton and Company
Size: 1469px × 1701px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthordawsonjo, bookcentury1800, bookdecade1880, bookyear1888
