A series of well-preserved specimens of the little-known Palaeogene species Biselenaria placentula (Reuss, 1867) warrant the designation of a new family of free-living cheilostome bryozoans, Biselenariidae n. fam. In contrast to the structural organization of all other free-living, lunulitiform cheilostomes, all zooids are enclosed almost completely by cuticular, exterior walls. Yet, like other lunulitiforms, the colony must be regarded as a highly integrated functional unit, as revealed through the unique, highly complex interior architecture. In creating the new monotypic family, the type species Biselenaria placentula is described in detail, while the ambiguous taxonomic status of the only other taxon, B. offa Gregory, 1893, is discussed.UUID: http://zoobank.org/6ad8a795-c45e-4619-b2bb-46916585fbd9

中文翻译：

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一个激进的、新颖的自由生活苔藓虫群落设计：Biselenaria placentula (Reuss, 1867)

一系列保存完好的鲜为人知的古近纪物种标本胎盘蓼(Reuss, 1867) 有必要指定一个新的自由生活的口吻苔藓虫家族，Biselenariidae n。家庭 与所有其他自由生活的月状唇口动物的结构组织相比，所有动物几乎完全被角质层外墙包围。然而，与其他月形类动物一样，该菌落必须被视为一个高度整合的功能单元，这一点通过独特、高度复杂的内部结构揭示了这一点。在创建新的单型科中，模式种胎盘蓼被详细描述，而唯一的其他分类单元的分类地位模棱两可，乙.关闭讨论了 Gregory，1893 年。UUID：http://zoobank.org/6ad8a795-c45e-4619-b2bb-46916585fbd9