Cryptokerpia sarlaccophora gen. et sp. nov., an enigmatic type of gymnosperm leaf, is described based on dispersed cuticles retrieved from bulk-macerated samples of the Umm Irna Formation (Upper Permian) of the Dead Sea Region, Jordan. The most prominent diagnostic feature of the new genus is that stomatal pores are sunken deep into the epidermis at the bottom of multi-cellular stomatal crypts that are lined with multiple tiers of papillae. Vaguely similar ‘stomatal tubes’ are known from several plant groups (e.g., conifers, Bennettitales, Proteaceae, noeggerathiopsids), but are readily distinguished by their epidermal features and gross morphology. The Umm Irna Formation provides a unique window into rarely preserved dry-standing elements and demonstrates that, when these groups are preserved, they still hold great potential for future research.

中文翻译：

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隐孢子虫 等。nov。，约旦晚二叠世Umm Irna组的神秘植物化石

隐孢子虫gen。等。nov。是一种神秘类型的裸子植物叶，基于从约旦死海地区Umm Irna组（上二叠纪）Umm Irna组（上部二叠纪）的大浸软样品中获得的分散的角质层进行了描述。该新属最突出的诊断特征是，气孔毛孔深陷于表皮深处的多细胞气孔隐窝底部，内层有多层乳头。几种植物群（例如，针叶树，Bennettitales，Proteaceae，noeggerathiopsids）已知相似地相似的“气管”，但它们的表皮特征和总体形态很容易区分。Umm Irna编队提供了一个罕见的窗口，可以看到很少保存的干燥元素，并表明，当保存这些组时，它们仍具有巨大的未来研究潜力。