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REMARKABLE NEW DATA ON MESOZOIC BIRD OPTICS
In the latest J Vert Paleont. 19(1):1 Qiang et al. decribe the new
confucifuisornithid bird Changchengornis. The most fascinating aspect of this
archaic creature can be seen in fig. 3 B. Sitting atop the beak are a pair of
spectacles. Quite small, probably in order to minimize drag during flight.
Not discussed is whether the lens configuration indicates a near or
farsighted condition, or whether they were bifocal. TO my knowledge this is
the earliest known example of the use of optical technology in Earth history.