| costae |
A rib or rib-like structure, often located in the apical pore complex of thecated species; eg Coolia monotis.
출처: www.nmnh.si.edu/botany/projects/dinoflag/glossary....
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| costae |
First formed radial ridge on external surface of shell most commonly originating at the junction between the brephic and neanic shell (juvenile stages of growth development). [Also but ambiguously used for any coarse rib, without reference to origin. Costella is a fine rib, amd capilla is a very fine rib. ...
출처: www.mcz.harvard.edu/Departments/InvertPaleo/Trento...
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