Oculudentavis khaungraae was described based on a tiny skull trapped in amber. The slender tapering rostrum with retracted osseous nares, large eyes, and short vaulted braincase led to its identification as the smallest avian dinosaur on record, comparable to the smallest living hummingbirds. Despite its bird-like appearance, Oculudentavis showed several features inconsistent with its original phylogenetic placement. Here we describe a more complete, specimen that demonstrates Oculudentavis is actually a bizarre lizard of uncertain position. The new interpretation and phylogenetic placement highlights a rare case of convergent evolution rarely seen among reptiles. Our results re-affirm the importance of Myanmar amber in yielding unusual taxa from a forest ecosystem rarely represented in the fossil record.

中文翻译：

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微小的白垩纪干鸟Oculudentavis表现为奇异的蜥蜴

Oculudentavis khaungraae被描述为基于一个琥珀色的小头骨。细长的逐渐变细的讲台，骨缩回的鼻孔，大眼睛和短拱形的脑袋，使它被确定为有记录的最小的鸟类恐龙，与最小的活着的蜂鸟相当。尽管有类似鸟的外观，但Oculudentavis仍显示出一些与其原始系统发育位置不一致的特征。在这里，我们描述了一个更完整的标本，证明了Oculudentavis实际上是位置不确定的奇异蜥蜴。新的解释和系统发生的位置突出了爬行动物中罕见的收敛进化的罕见情况。我们的结果再次证实了缅甸琥珀在从化石记录中很少出现的森林生态系统中产生非同寻常的分类单元中的重要性。