Detection of lost calamus challenges identity of isolated Archaeopteryx feather

In 1862, a fossil feather from the Solnhofen quarries was described as the holotype of the iconic Archaeopteryx lithographica. The isolated feather’s identification has been problematic, and the fossil was considered either a primary, secondary or, most recently, a primary covert.

Read more: https://go.nature.com/2S93dwb

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