명사
The upper half of the theca of a thecate protist such as a diatom or dinoflagellate.
- 관련 단어
- 예문
-
더 많은 예문 (1)
Cellariiform, the orifices nearly confined to the convex frontal and lateral surfaces; the basal surface with a strong median calcareous keel, almost concealed by a flat membranous epitheca, which covers the whole zoarium […]