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Ilyocypris是陆相介形类的一个常见属。对其壳体外层瘤状凸起分类意义的认识历来存有争议。本文在对柴达木盆地第四纪具瘤或经常具瘤的 Ilyocypris分子进行研究并初步查明其瘤状装饰分类意义的基础上 ,将其鉴定描述为三个种 :Ilyocypris gibba,I.echinata和 I.salebrosa。前者个体发育中壳瘤减少直至消失的变化及其与气候环境变迁的相关性表明 ,I.gibba的壳瘤发育程度是表型特征 ,区内原定的 I.biplicata和 I.bradyi实为 I.gibba的无瘤类型。I.echinata的壳瘤也不具备分类意义。I.salebrosa则不同 ,其鲜明而巨大的后背瘤足以与 Ilyocypris属的其它种区别开来 ,是稳定的种征。
Ilyocypris is a common genus of terrestrial forms. It is always controversial about the classification significance of the outer knobs of shell. Based on the study of Ilyocypris, a tumor of the Quaternary in the Qaidam Basin or its frequent neoplasm, and preliminary identification of the significance of its nodulation, Ilyocypris gibba, I.echinata And I.salebrosa. The former in the individual development of neoplasia until the disappearance of change and its relationship with changes in climate and environmental changes that I.gibba the degree of development of the oncology is a phenotypic characteristics of the area of the original I.biplicata and I.bradyi really I Gibba’s tumor-free type. The shell tumors of I.echinata also do not have a classification meaning. I. salebrosa is different, its bright and huge back tumor sufficient to distinguish it from other species of Ilyocypris is a stable species.