Diplopora johnsoni and Selliporella neocomiensis are often considered synonymous. The two taxa share the same pattern consisting in a cylindrical, articulated biomineralised skeleton bearing whorls of short primary laterals followed by numerous long, trichophorous, secondary laterals. An exhaustive study, entailing a review of Praturlon's type-material of Diplopora johnsoni, displays the different framework and biometry between them. Therefore, the two species are considered separate taxa.

Moreover, a controversial generic attribution of the two taxa is highlighted in literature: Selliporella neocomiensis has been attributed to both the genus Pseudoclypeina and to the genus Selliporella, while Diplopora johnsoni has been assigned to the genus Pseudoclypeina. Regarding the comparison between the genera Selliporella and Pseudoclypeina, and their respective type species, there is no doubt that Diplopora johnsoni and Selliporella neocomiensis display the closest affinity with Selliporella (short primary laterals and trichophorous secondary laterals) and not with Pseudoclypeina (long phloiophorous primary laterals and phloiophorous secondary laterals). Thus, the two taxa are ascribed to the genus Selliporella. The former species is named Selliporella johnsonii n.comb.

Further relevant results show that Selliporella johnsonii and Selliporella neocomiensis display a different chronostratigraphic distribution. In the Apennine Carbonate Platform (southern Apennines, Italy), Selli-porella johnsonii has been well calibrated through high-resolution C-isotope stratigraphy and biostratigraphy as revealed in previous studies. This taxon constitutes a peculiar bioevent set between the end of the Weissert event and the Valanginian−Hauterivian boundary, thus may serve as a possible instrument in locating the Weissert event in the field. On the other hand, Selliporella neocomiensis found in the Getic Carbonate Platform (South Carpathians, Romania), appears to characterise the Berriasian stage.

Diplopora johnsoni和Selliporella neocomiensis通常被认为是同义词。这两个分类群具有相同的模式，包括一个圆柱形的、铰接的生物矿化骨架，带有短的初级侧枝，随后是许多长的、毛状的、次级侧枝。一项详尽的研究，包括审查 Praturlon 的Diplopora johnsoni类型材料，显示了它们之间的不同框架和生物特征。因此，这两个物种被认为是独立的分类群。

此外，这两个类群的一个有争议的通用属性被强调文学：Selliporella neocomiensis已被归因于这两个属Pseudoclypeina和属Selliporella，而Diplopora johnsoni已分配给属Pseudoclypeina。关于Selliporella属和Pseudoclypeina属及其各自类型种的比较，毫无疑问，Diplopora johnsoni和Selliporella neocomiensis与Selliporella（短初级侧枝和毛状次侧枝）亲缘关系最密切，而不是与SelliporellaPseudoclypeina（长的 phloiophorous 初级侧枝和 phloiophorous 次生侧枝）。因此，这两个分类群被归于Selliporella属。前一个物种被命名为Selliporella johnsonii n.comb。

进一步的相关结果表明，Selliporella johnsonii和Selliporella neocomiensis显示出不同的年代地层分布。在亚平宁碳酸盐平台（意大利亚平宁南部），如先前研究所示，Selli-porella johnsonii已通过高分辨率 C 同位素地层学和生物地层学进行了很好的校准。该分类群构成了 Weissert 事件结束和 Valanginian-Hauterivian 边界之间的特殊生物事件，因此可以作为在该领域定位 Weissert 事件的可能工具。另一方面，在 Getic Carbonate Platform（罗马尼亚南喀尔巴阡山脉）中发现的Selliporella neocomiensis似乎是 Berriasian 阶段的特征。