(After Hertwig.) bearing at its free upper end a stiff bristle and running out at its base into a nerve-fibre; (3) concrement-cells, which produce intercellular concretions, so-called oto liths. [Please select]
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Otolith: a little ear-bone: granules or concretions found in an otocyst. [Please select]
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The following are among the concretions found in the various parts: (1) _Coralline calculi. [Please select]
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Large globular or compound globular argillaceous concretions, coated with gypsum, were abundant at this point. [Please select]
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] The tentacles are solid and stiff like little hairs, and two of them, in each quarter-segment of the disk, have small concretions at the base, which are no doubt eye-specks. [Please select]
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Often a surface of weathered rock is so studded with these symmetrical concretions, that it is hard to believe that one is not looking at the calcified stumps of a close-growing grove of palms. [Please select]
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