| Where there is some uncertainty about how a partially lacunose word should be restored, the uncertain letters are placed within brackets. |
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| In such specimens it will be seen that the hymenium has become highly convoluted or lacunose. |
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| In the Middle and Late Silurian odd specializations, like lacunose septa and complex septal formations in the body chamber, develop. |
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| Aside from the loss of the first thirteen books, the remaining eighteen are in many places corrupt and lacunose. |
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