Sunday 8 November 2009

The amber flyglass


Amber is fossilised tree resin. It provides as with an intriguing alternative to the fossil record, especially where insects are concerned, because it can seemingly freeze creatures in time

In this paper a new kind of fly has been discovered. As predicted by evolutionary theory it has some similarities to modern-day flies BUT it also has striking differences. It is so different that it has been categorised as being the first example of a new family.

Around 100 million years ago Cascoplecia insolitis was buzzing around the skies, getting in the eyes of dinosaurs and the like. It shows the unique feature of having miniature eyes at the located at the end of a small protuberance (see arrow above). These are alongside the main compound eyes.

The fact that this novelty hasn’t survived indicates that it was an adaptation to specific circumstances that finally became a dead end.

(Incidentally, the name apparently means ‘old’ and ‘strange’!)

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