. Fossil plants : for students of botany and geology . Paleobotany. xxxix] ZAMITES 533 fronds usually occur as detached specimens, and without any associated flowers it is advisable, as Nathorst maintains, to retain the non-committal genus Zamites. This type of frond is widely distributed in Jurassic strata. The occurrence of many forms agreeing generally with the type- specimen but differing from it in features that are not constant. Fig. 599. Zamites gigus. (British Museum, V. 2723a; ^ uat. size.) or of real morphological importance renders accurate specific deUmitation very difficult. Speci
. Fossil plants : for students of botany and geology . Paleobotany. xxxix] ZAMITES 533 fronds usually occur as detached specimens, and without any associated flowers it is advisable, as Nathorst maintains, to retain the non-committal genus Zamites. This type of frond is widely distributed in Jurassic strata. The occurrence of many forms agreeing generally with the type- specimen but differing from it in features that are not constant. Fig. 599. Zamites gigus. (British Museum, V. 2723a; ^ uat. size.) or of real morphological importance renders accurate specific deUmitation very difficult. Species that appear to be indistin- guishable from Zamites gigas by any well-marked characters are, Zamites Feneonis^ Brongn., Z. Moreaui^ Brongn., Z. Renevieri^ 1 Saporta (75) A. Pis. Lxxxvn.—xcn. = Ibid. PI. xcm. 2 Ibid. Pis. Lxxxiv., 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 Seward, A. C. (Albert Charles), 1863-1941. Cambridge : University Press
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