. Fossil plants : for students of botany and geology . Paleobotany. xxxix] PTILOPHYLLTJM 517 shire the opinion was expressed^, based on an examination of Morris's type-specimen of Ptilophyllum cutchense and of a large number of English and other fronds identical with or closely- allied to Pterophyllum pecten Lind. and Hutt., that the Indian and European fronds belong to the same genus. In a later paper^ it was maintained that P. cutchense and P. acutifolium are probably identical vith the English type, and a drawing was published— reproduced in fig. 591—of Morris's type-specimen. Dr Halle* has
. Fossil plants : for students of botany and geology . Paleobotany. xxxix] PTILOPHYLLTJM 517 shire the opinion was expressed^, based on an examination of Morris's type-specimen of Ptilophyllum cutchense and of a large number of English and other fronds identical with or closely- allied to Pterophyllum pecten Lind. and Hutt., that the Indian and European fronds belong to the same genus. In a later paper^ it was maintained that P. cutchense and P. acutifolium are probably identical vith the English type, and a drawing was published— reproduced in fig. 591—of Morris's type-specimen. Dr Halle* has discussed the genus Ptilophyllum and his investigations lead him to a different conclusion; he, like Zeiller and some other. Fig. 590. Ptilophyllum pecten {P. cutchense) and Williamsonia Blanfordi. [Drawn from a specimen figured by Feistmantel (76^) PI. xn. fig. 6.] authors, employs Ptilophyllum in Feistmantel's sense. The pinna-base is said to agree in its asymmetrical form with that in Otozamites, while it differs from the symmetrical base of Zamites pinnae. In Ptilophyllum both edges of the pinna-base are said to bend down in joining the rachis; at the upper corner the base thus becomes rounded and for some distance free from the rachis; it is also sometimes a little auriculate; at the lower edge the pinna is decurrent on the upper surface of the rachis. In a subsequent 1 Seward (00) B. p. 193. ^ md. (03) p. 227. ^ HaUe {13').. 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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