Fig. 2 in New records of Late Triassic wood from Argentina and their biostratigraphic, paleoclimatic, and paleoecological implications
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Fig. 2. Ginkgoalean wood Baieroxylon cicatricum Prasad and Lele, 1984 (CTES-PB 14411) from Hilario Creek, San Juan province, Argentina, Upper Triassic. General aspect of the wood showing the "eye-shaped" traces (A1). Detail of the "eye-shaped" trace (A2). Transverse sections of the secondary wood showing growth rings (white arrow) and "shearing zones" (black arrows) (A3) and tracheids of unequal size (A4). Radial longitudinal sections showing partially biseriate uniseriate pits, opposite biseriate pits (arrow) (A5, A7) and cupressoid cross-fields and others with the pits grouped in a cluster (A6, A8). Radial longitudinal sections showing rays (A9) and trace detail (A10).
图2 采自阿根廷圣胡安省希拉里奥溪晚三叠世地层的银杏类木材(Ginkgoalean wood)——疤痕拜尔木(Baieroxylon cicatricum Prasad and Lele, 1984)标本(CTES-PB 14411)。其中:A1为该木材显示"眼形"痕迹的整体外观;A2为"眼形"痕迹的细节;A3为次生木质部横切面,可见生长轮(白色箭头)与剪切带(shearing zones,黑色箭头);A4为大小不一的管胞;A5、A7为径向纵切面,显示部分单列、部分双列的纹孔以及对生双列纹孔(箭头所示);A6、A8为径向纵切面,可见柏木型交叉场纹孔(cupressoid cross-fields)以及纹孔聚集成簇的类型;A9为显示木射线的径向纵切面;A10为痕迹细节。



