File:Telephragmoxylon brachyphylloides holotype transverse section Torrey 1923 Plate14 fig52.png

Telephragmoxylon_brachyphylloides_holotype_transverse_section_Torrey_1923_Plate14_fig52.png(399 × 397 pixels, file size: 227 KB, MIME type: image/png)

Summary

Description
English: A transverse thin section of the Telephragmoxylon brachyphylloides holotype. "Fig. 52. Transverse section; detail of septate tracheids. In this highly magnified view the remarkable phenomenon which sets the genus apart is seen. Stretching obliquely across the field is a darker band of tracheids. The dark color is due to the fact that a lucky section has cut at least five tracheids in succession at such a point that their cross-walls are visible . On one of these septa a pair of bordered pits is clearly seen, and evidences of the same are visible on three more."

Cretaceous (Comanchean), 127-99.6 +/- 0.9 mya, Trinity Group, near Weatherford, Texas

Repository not identified.
Date
Source "The comparative anatomy and phylogeny of the Coniferales Part 3: Mesozoic and Tertiary coniferous woods" in (1923) Proceedings and Transactions of the Royal Society of Canada, 3, 6 (no. 2), Memoirs of the Boston Society of Natural History, pp. 38−103
Author Torrey, R.E., 1923

Licensing

Public domain
This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.

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