An articulated wing belonging to Palaeeudyptes gunnari containing mineralized skin was found in Lutetian (middle Eocene) sediments from Seymour Island, Antarctica. It shows the connective tissues, morphology and density of the feather follicles, and a groove pattern left by the feather calami resting on the skin. Analysis of the preserved surfaces indicates a composition of calcium phosphate. This is the most complete and only articulated wing described for this species and represents the first record of a neornithine bird preserving three‐dimensional integument. Plumage density of the wing MLP 14‐I‐10‐22, estimated by counting the follicles under a stereoscopic microscope, is lower than that of the modern Emperor penguin.

中文翻译：

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来自南极始新世的巨型企鹅的第一个化石皮肤

在南极洲西摩岛的Lutetian（始新世中部）沉积物中发现了含有矿化皮肤的隶属于古尼古拉节的铰接翼。它显示了羽毛毛囊的结缔组织，形态和密度，以及羽毛cal在皮肤上留下的凹槽图案。对保存的表面的分析表明磷酸钙的组成。这是针对该物种描述的最完整，唯一的铰接翼，代表了保有三维外皮的新鸟皮鸟的第一笔记录。通过在立体显微镜下对卵泡计数来估算的机翼MLP 14-I-10-22的羽化密度低于现代帝王企鹅的羽化密度。