. Fossil plants : for students of botany and geology . Paleobotany. 352 SEQtrOIINEAE [CH. Conites ovalis (Carruthers). The type-specimen from the Gault of Folkestone^ is an oval cone 6 cm. long and about 2-5 cm. in diameter; the scales are cuneate and the exposed ends transversely elongated and hexagonal (fig. 766). It bears a close resemblance to Geinitzia gracillima, but in the absence of any details with regard to anatomical features or seeds the non-com- mittal name Conites is employed. Sequoiites Holsti Conwentz ex Nathorst MS. This species^, from the Holma sand- stone (Senonian) of Swede
. Fossil plants : for students of botany and geology . Paleobotany. 352 SEQtrOIINEAE [CH. Conites ovalis (Carruthers). The type-specimen from the Gault of Folkestone^ is an oval cone 6 cm. long and about 2-5 cm. in diameter; the scales are cuneate and the exposed ends transversely elongated and hexagonal (fig. 766). It bears a close resemblance to Geinitzia gracillima, but in the absence of any details with regard to anatomical features or seeds the non-com- mittal name Conites is employed. Sequoiites Holsti Conwentz ex Nathorst MS. This species^, from the Holma sand- stone (Senonian) of Sweden, is founded on fragments of foliage-shoots covered with spirally disposed, appressed, broadly tri- angular leaves. The specimens are not well enough preserved to show in detail the ana- tomical features, but Conwentz considers such characters as he was able to recognise favourable to Nathorst's adoption of the generic name Sequoiites. The species is, however, not above suspicion as a record of a Conifer closely allied to Sequoia. Sequoiites Langsdorfii (Brongniart). Brongniart^ instituted this Tertiary species under the generic name Taxites, and Heer* in his description of foliage-shoots from Miocene beds in Switzerland adopted the designation Sequoia. In habit S. Langsdorfii is practically identical with Sequoia senipervirens and by many authors it is spoken of as the direct ancestor of the recent species. Under this species Schimper^ includes a fairly long list of synonymsâspecies referred to Taxites, Taxodium, Cupres- sites, and other generaâwhich serves to emphasise the fact that impressions of sterile branches with distichous, linear, leaves cannot. Fig. 766. Conites ovalis. (After Carruthers; nat. size.) 1 Carruthers (71) p. 3, with text-figure. 2 Conwentz (92) p. 28, Pis. m., iv., viii. 3 Brongniart (28) A. p. 108. 5 ScMmper (72) A. p. 216. â â Heer () A. p. 54, Pis. xx., Please note that these images are extracted from scanned page images that may have be
Size: 1118px × 2236px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookpublishercambr, bookyear1898
