spirotheca造句
造句与例句
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- Shell inflated-fusimform; first two or three volutions tightly coiled, outer ones inflacted; spirotheca as in Schwaterina.
- Spirotheca as with Schwagerina, moderately thin in the tightly coiled portion and next one or two volutions, becoming thick and more coarsely alveolar in the outer two or three.
- Fusuninidae and Schwagerinidae, by straight, unfluted or uncorregated, septa and by the presence of " I-beam " like transverse and axial septula that hang from the spirotheca, partially subdividing the chambers.
- The spirotheca is structured as in " schwagerina "; the first two or three volutions tightly coiled and elongate-fusiform, the outer volutions distinctly inflated-fusiform; septa highly fluted throughout.
- It's difficult to see spirotheca in a sentence. 用spirotheca造句挺难的
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