. Catalogue of the Mesozoic plants in the Department of geology, British museum (Natural history) [Part III-IV] The Jurassic flora. Paleobotany; Paleobotany. AEAUCATllTfiS. 135 In one of the specimens in the York Museum, described by Carruthers the cone is seen in longitudinal section; a broad central region, representing the stout cylindrical axis, is occupied by a mass of pisolite to which numerous cone-scales are attached. The scales are shown in section, and in several of them one sees a single seed lying in a cavity occupying the proximal end of the Fig. 16.—Araucarites oolitiem (Carr.).
. Catalogue of the Mesozoic plants in the Department of geology, British museum (Natural history) [Part III-IV] The Jurassic flora. Paleobotany; Paleobotany. AEAUCATllTfiS. 135 In one of the specimens in the York Museum, described by Carruthers the cone is seen in longitudinal section; a broad central region, representing the stout cylindrical axis, is occupied by a mass of pisolite to which numerous cone-scales are attached. The scales are shown in section, and in several of them one sees a single seed lying in a cavity occupying the proximal end of the Fig. 16.—Araucarites oolitiem (Carr.). Surface-Tiew of part of the mould in whicli the type-specimen (cast) of Araucarites Sudlestoni, Carr., was emhedded. From a specimen in the Yotk Museum. Nat. size. scale, precisely .as in Araucarites oolitious from Northamptonshire. At the apex of the specimen the vascular cylinder of the cone-axis is seen in section, but the minute structure is not preserved. Another specimen represents the pedunculate base of the cone in which the scales are seen in end-view; they reach a breadth of 1 -4 cm., and may fairly be described as winged. Text-fig. 16 shows. Fig. 17.—Araucarites ooliticus (Carr.). A, scale in surface-view, with end of seed projecting; B, view of proximal end of scale ; C, surface-view of cone. From specimens in the Northampton Museum. Nat. size. a few of the distal ends of cone-scales seen on the mould made by the cone in the oolitic rock: a slight ridge extends across the end of each cone-scale, as in Araucarites spharocarpus (PI. XIII. Figs. 3-4). It is possible that Araucarites spJimrocarpus may he specifically identical with A. ooliticus, but it is probably wiser to retain both specific names. I have, however, no hesitation in regarding them as very closely allied forms belonging to the section Eutatta of. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of t
Size: 2189px × 1142px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorbritishmuseumnaturalh, bookcentury1900, bookdecade1900