Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page Diplura:

"

The relationships among the four groups of hexapods are not resolved, but most recent studies argue against a monophyletic Entognatha.[1] The fossil record of the Diplura is sparse, but one apparent dipluran dates from the Carboniferous.[2] This early dipluran, Testajapyx, had compound eyes, and mouthparts that more closely resembled those of true insects.