I want to know the answer to the following question:
In addition to Carboniferous, what other insect order is inclusive of extant groups, stem groups and Paleozoic groups?
All the background I'm provided with is that "Many of the early groups became extinct during the Permian-Triassic extinction event, the largest mass extinction in the history of the Earth, around 252 million years ago.". Is that enough to answer the question?