. The geological history of plants. Paleobotany; 1888. 126 THE GEOLOGICAL HISTORY OF PLANTS. of fossil ferns, in which the fructification is for the most part wanting, it is still more so, depending in great part on the form and venation of the divisions of the Fig. 51.—Group of ooal-formation ferns. A, Odontopt^-ia sviouneata (Bun- bury). B, NeuropterU cordata (Brongniart). o, Alethopteria Umemtica (Brongniart). d, Dictj/opterie ohliqua (Buntury). e, jPhyllopterw an- Ugua (Dawson), magnified; e>, Natural size, r, Neuropteris eyehpte- roidee (Dawson). Of about eight families into w
. The geological history of plants. Paleobotany; 1888. 126 THE GEOLOGICAL HISTORY OF PLANTS. of fossil ferns, in which the fructification is for the most part wanting, it is still more so, depending in great part on the form and venation of the divisions of the Fig. 51.—Group of ooal-formation ferns. A, Odontopt^-ia sviouneata (Bun- bury). B, NeuropterU cordata (Brongniart). o, Alethopteria Umemtica (Brongniart). d, Dictj/opterie ohliqua (Buntury). e, jPhyllopterw an- Ugua (Dawson), magnified; e>, Natural size, r, Neuropteris eyehpte- roidee (Dawson). Of about eight families into which modern ferns are divided, seven are found in a fossil state, and of these, four at least, the GyatJiacem, the OpJiioglossem, the Hy-. 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
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