. Elements of geology : a text-book for colleges and for the general reader. Geology. 368 PALEOZOIC SYSTEM OF ROCKS. 4, Sigillarids,—The typical genus of this family is Sigillaria. These plants are found, like Lepidodendrids, mostly as flattened masses, which are portions of trunks, but also as roots and leaves. The trunk-. FiG. 501. Fig. 503. Figs. 499-503.—Sigillarids: 499. Sigillaria reticulata (after Lesquereux). 500. Sigillaria Graseri. 501. Sigillaria laevigata (European). 502. Sigillaria obovata (after Lesquereux). 503. Leaf of Sigillaria elegans (after Dawson). impressions are distingu
. Elements of geology : a text-book for colleges and for the general reader. Geology. 368 PALEOZOIC SYSTEM OF ROCKS. 4, Sigillarids,—The typical genus of this family is Sigillaria. These plants are found, like Lepidodendrids, mostly as flattened masses, which are portions of trunks, but also as roots and leaves. The trunk-. FiG. 501. Fig. 503. Figs. 499-503.—Sigillarids: 499. Sigillaria reticulata (after Lesquereux). 500. Sigillaria Graseri. 501. Sigillaria laevigata (European). 502. Sigillaria obovata (after Lesquereux). 503. Leaf of Sigillaria elegans (after Dawson). impressions are distinguished from those of Lepidodendrids by longi- tudinal ribbings or flutings, ornamented with seal-like impressions (sigilla, a seal), in vertical rows (Figs. 499-502). Little is known of their leaves, though they seem to have been similar to those of Lepido- dendron (Fig. 503). The best general conception which we can form of the Sigillaria would represent it as a tall, gently-tapering trunk, longitudinally fluted. 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 LeConte, Joseph, 1823-1901. New York : D. Appleton and Co.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectgeology, bookyear1892
