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Scanning electron microscope photographs of a boring in a six-sided variant of D. (Dentalium) laqueatum Verrill, USNM 780591d.

Summary

Album caption and Professional paper 1282, plate 2 caption: Figures 1-6. Scanning electron microscope photographs of a boring in a six-sided variant of D. (Dentalium) laqueatum Verrill, USNM 780591d. 1. Vertical view of "half hole" specimen, broken at the point of drilling. x 60. 2. Vertical view of the boring, showing the fine reticulate surface ornament extending to the margin of the boring without any etched zone. x 150. 3. Enlargement of the upper surface seen in figure 2, showing the relationship of crosslamellar structure to the ornament and emphasizing the lack of an etched zone. x 270. 4. Slightly oblique view, showing the steep but gently concave curved wall of the boring. x 150. 5. Detail at the inner margin of the boring. [...]

Contacts

Data Owner :
U.S. Geological Survey
Photographer :
Yochelson, Ellis Leon

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yel00018.jpg thumbnail 1.33 MB image/jpeg
yel00018.tif 20.47 MB image/geotiff

Material Request Instructions

Available in the U.S. Geological Survey Denver Library Photographic Collection Yochelson, E.L. Collection.

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