The tectiform loricate choanoflagellate genera Calotheca, Stephanacantha and Syndetophyllum have all been first described from warm water habitats and share the presence of flattened and often elaborate costal strips in the lorica. The current reinvestigation does confirm both the widespread occurrence of these taxa within the global warm water belt, and largely corroborates the established genus and species matrix. We describe here Stephanacantha oceanica sp. nov. which closely resembles S. campaniformis, and transfer Parvicorbicula zigzag to the genus Stephanacantha, despite differences in costal strip morphology, but based on a complete agreement in lorica constructional details.

最早在温暖的水生境中描述了具盖状的鞭毛鞭毛体属Calotheca，Stephanacantha和Syndetophyllum的化石，它们在lorica中共享扁平且通常精细的肋条。当前的重新研究确实确认了这些分类单元在全球暖水带中的广泛存在，并在很大程度上证实了已建立的属和物种矩阵。我们在这里描述Stephanacantha oceanica sp.。十一月 这非常类似于S. campaniformis，并转移Parvicorbicula曲折属Stephanacantha， 尽管肋条的形态不同，但基于完整的lorica结构细节上的协议。