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The Extent of the Preserved Feathers on the Four-Winged Dinosaur Microraptor gui under Ultraviolet Light

Figure 4

Close up of the chest of the holotype, close to the sternal plates under UV light.

As with figure 3, this shows that the feathers do indeed penetrate the halo (grey arrows) when seen in UV and approach or reach the bones. These are not seen in natural light due to the overlying phosphatised tissues, but the striations of the feathers are clearly visible despite this covering. Scale bar of 1 cm.

Figure 4

doi: https://doi.org/10.1371/journal.pone.0009223.g004