Q: In this task, we ask you to rewrite a sentence in simple English without changing its general meaning. Essentially, you want to make the sentence easier to read by using simpler words, utilizing more straightforward sentence structures, and omitting non-essential information etc.
The name Palaeoptera has been traditionally applied to those ancestral groups of winged insects ( most of them extinct ) that lacked the ability to fold the wings back over the abdomen as characterizes the Neoptera .
A:
The Palaeoptera is the group of primitive ( basal ) winged insects which do not fold the wings back over the abdomen , as Neoptera do .