Abstract A new alveolinid is here formally presented from the lower Aptian (Bedoulian) and Gargasian of Iran and Croatia. Based on the globular shape, presence of continuous septula and preseptal passage, it can be possibly included into the genus Ovalveolina as Ovalveolina? primigenita sp. nov.. The occurrence of a structure resembling to alveoli and few adult supplementary foramina individuate however a mismatch with the type of the genus O. ovum, whereas alveoli can be observed in some sections of O. crassa figured by previous authors. The new species is separated from those allies of the genus (O. ovum and O. crassa) by some biometrical parameters. Ovalveolina? primigenita sp. nov. represents the oldest alveolinid so far know in the geological record. The earliest occurrence of an alveolinoid tells about the origin of the group which took place within the Arabian and Adriatic platform domains during the lower Aptian. This would suggest that the spreading of diversity into the Peri-Mediterranean and Middle East ‘mid’-Cretaceous genera such as Cisalveolina, Praealveolina, Ovalveolina and Archaealveolina, among others, was likely related to the radiation event recorded herein.

中文翻译：

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Alveolinoidea（瓷质大有孔虫）的起源：Ovalveolina？primigenita gen. 等 sp. 11 月，来自伊朗和克罗地亚的 Aptian（Bedoulian-Gargasian）

摘要 这里正式提出了一种新的肺泡科动物，来自伊朗和克罗地亚的下阿普蒂安（Bedoulian）和加尔加斯河。根据球状形状、连续中隔和中隔前通道的存在，它可能被归入卵泡状菌属，作为卵泡状？primigenita sp. 11月.. 类似于肺泡的结构的出现和少数成年补充孔的个体化，但与 O. ovum 属的类型不匹配，而在先前作者计算的 O. crassa 的某些部分可以观察到肺泡。新物种通过一些生物特征参数与该属的那些盟友（O. ovum 和 O. crassa）区分开来。卵泡？primigenita sp. 十一月 代表迄今为止地质记录中已知的最古老的肺泡。最早出现的肺泡类动物讲述了该类群的起源，该类群发生在阿普蒂安下游的阿拉伯和亚得里亚海平台域内。这表明多样性扩散到近地中海和中东“中”白垩纪属，如 Cisalveolina、Praealveolina、Ovalveolina 和 Archaealveolina 等，可能与此处记录的辐射事件有关。