Broken and repaired shells and apertural views of D. (Dentalium) laqueatum Verrill.
Summary
Album caption and Professional paper 1282, plate 3 caption: Figures 1-6. Broken and repaired shells and apertural views of D. (Dentalium) laqueatum Verrill. 1. A "half hole" between two ribs of a seven-sided variant. x 15, USNM 780591e. 2. Apertural view of a seven-sided variant broken at the apex; compare with the thickened ribs shown in figure 1. x 15, USNM 780591f. 3. Apertural view of a large seven-sided variant with reduced ribs, 4.9 em in chord length. x 15, USNM 780591g. 4. Left-side view of a seven-sided variant, with a single break, 3. 7 em in chord length. x 5, USNM 780591h. 5. Right-side view of seven-sided variant with two breaks, 3.2 em in chord length. x 5, USNM 780591i. 6. Slightly oblique ventral view of a seven-sided [...]
Summary
Album caption and Professional paper 1282, plate 3 caption: Figures 1-6. Broken and repaired shells and apertural views of D. (Dentalium) laqueatum Verrill.
1. A "half hole" between two ribs of a seven-sided variant. x 15, USNM 780591e.
2. Apertural view of a seven-sided variant broken at the apex; compare with the thickened ribs shown in figure 1. x 15, USNM 780591f.
3. Apertural view of a large seven-sided variant with reduced ribs, 4.9 em in chord length. x 15, USNM 780591g.
4. Left-side view of a seven-sided variant, with a single break, 3. 7 em in chord length. x 5, USNM 780591h.
5. Right-side view of seven-sided variant with two breaks, 3.2 em in chord length. x 5, USNM 780591i.
6. Slightly oblique ventral view of a seven-sided variant with four breaks, 5.0 em in chord length; this is the only specimen that deviates from logarithmic curvature. x 5, USNM 780591j.
Available in the U.S. Geological Survey Denver Library Photographic Collection Yochelson, E.L. Collection.
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