While the Doctor 's archenemy , the Daleks , were on the whole unchanged during the original series ' twenty-six season run , the Cybermen were seen to change with almost every encounter .
While the Doctor 's other old enemies the Daleks did not change during the original series 's twenty-six season run , the Cybermen were seen to change with almost every appearance .
A National Museum of Natural History database for the study of ants , wasps , bees and termites describes the archedictyon as : According to a 1999 paper on the evolution of flght in Palaeoptera the cross veins of some Palaeodictyoptera may be an adaptive feature .