. Catalogue of the Mesozoic plants in the Department of Geology, British Museum (Natural History). British Museum (Natural History). Dept. of Geology; Paleobotany -- Mesozoic; Paleobotany -- England London. SPHEN0PTEEI8. Ill The figure gives the impression of a filmy fern, and in the light brown stain on the rock surface, representing the leaf lamina, we have just that kind of imprint which might be looked for in a Hymenophyllaceous type of fern. Attention has already been called to the danger of trusting too much to such resem- blances, which are frecj^uently nothing more than expressions of.
. Catalogue of the Mesozoic plants in the Department of Geology, British Museum (Natural History). British Museum (Natural History). Dept. of Geology; Paleobotany -- Mesozoic; Paleobotany -- England London. SPHEN0PTEEI8. Ill The figure gives the impression of a filmy fern, and in the light brown stain on the rock surface, representing the leaf lamina, we have just that kind of imprint which might be looked for in a Hymenophyllaceous type of fern. Attention has already been called to the danger of trusting too much to such resem- blances, which are frecj^uently nothing more than expressions of. Fio. 10 (V. 2327a). Enlarged 4 times. the different eff'ects of the diversity in texture and porosity of the rock matrix. The single pinnule shown in the woodcut agrees very closely with one figured by Potonio' in a Carboniferous fern, Sphenopteris Hoeninghausi, Brong., var. Larischiformis, Pot.; but it is not for a moment suggested that the two species have any natural affinity whatever. Ecclesbourne. Rufford Coll. V. 2162. Woodcut, Fig. 11. Probably a pinna from the basal portion of a frond. Pinnules ovato-lanceolate and lobed. The venation is fairly distinct, but, as is usually the case with carbonaceous impressions on clay, not nearly. 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 British Museum (Natural History). Dept. of Geology; Seward, A. C. (Albert Charles), 1863-1941; Stopes, Marie Carmichael, 1880-1958. London, Trustees of the B. M.
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