| 释义 |
Definition of prismatic layer in English: prismatic layernoun Zoology The middle layer of the shell of a mollusc, consisting of crystalline calcite or aragonite. Example sentencesExamples - As a result, it has been difficult to identify detailed or minute shell structures embedded in the thick prismatic layer or secondary thickening at the shell posterior.
- The prismatic layer is the middle layer and is composed of thin blocks of a prism-like calcium carbonate, which are oriented perpendicular to the mantle and the other two layers.
- Thinner extensions from the prismatic layer in Pseudobigalea crista also form comarginal ridges.
- Besides, the aragonitic shell is made up of two oriented layers: an irregular spherulitic prismatic layer and a fine complex crossed lamellar layer.
- This thin, prismatic layer was deposited too far from the shell margins to be interpreted as likely pallial myostracum.
Definition of prismatic layer in US English: prismatic layernoun Zoology The middle layer of the shell of a mollusk, consisting of calcite or aragonite. Example sentencesExamples - Thinner extensions from the prismatic layer in Pseudobigalea crista also form comarginal ridges.
- This thin, prismatic layer was deposited too far from the shell margins to be interpreted as likely pallial myostracum.
- The prismatic layer is the middle layer and is composed of thin blocks of a prism-like calcium carbonate, which are oriented perpendicular to the mantle and the other two layers.
- Besides, the aragonitic shell is made up of two oriented layers: an irregular spherulitic prismatic layer and a fine complex crossed lamellar layer.
- As a result, it has been difficult to identify detailed or minute shell structures embedded in the thick prismatic layer or secondary thickening at the shell posterior.
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