2-D and 3-D Microct Images of Fossil and Recent Cones (IMAGE)
Caption
This shows fossil and recent araucarian cones sectioned in 2-D by microCT (A, D, G), and showing one segmented spiral or row of seeds or seed locules produced by 3-D imaging (B, C, E, F, H, I). The seed spirals or rows in A, D, and G are delineated by red arrows. Yellow lines in B, C, E, F, H, and I represent the polar axis through the cones. Scale bars = 1 cm. (A–C) Fossil cone of Araucaria sp. from Wyoming (specimen no. CG066, Flynn Collection). (A) Transverse section 294/1012; diameter = ca. 6 cm. (B) Lateral view showing the 360° revolution of a single seed spiral. (C) Oblique distal view. (D–F) Fossil cone of Araucaria mirabilis from the Middle Jurassic of Argentina (specimen no. K5640, Museum für Naturkunde Chemnitz collection). (D) Transverse section 280/933; diameter = ca. 7.5 cm. (E) Lateral view showing the 180° revolution of a single seed spiral. (F) Oblique distal view. (G–I) Recent cone of Araucaria araucana from the Economic Botany Garden, University of Bonn, Germany. (G) Transverse section 469/876; diameter = ca. 17 cm. (H) Lateral view showing the vertical (nonspiral) arrangement of a row of seeds. (I) Oblique distal view.
Credit
Image credit Carole T. Gee. From Gee, C. T. 2013. Applying microCT and 3D visualization to Jurassic silicified conifer seed cones: A virtual advantage over thin-sectioning. <i>Applications in Plant Sciences</i> 1(11): 1300039. doi:10.3732/apps.1300039.
Usage Restrictions
Please include article citation: Gee, C. T. 2013. Applying microCT and 3D visualization to Jurassic silicified conifer seed cones: A virtual advantage over thin-sectioning. <i>Applications in Plant Sciences</i> 1(11): 1300039. doi:10.3732/apps.1300039.
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