What type of rodent was the aye aye first classified as?

early researchers surmised a close relationship between plesiadapids and the bizarre aye-aye of Madagascar, the only living primate with a rodent-like dentition. The aye-aye is now regarded as a member of the same primate stock as lemurs and loris. Yet the aye-aye may be ecologically similar to a rare genus of plesiadapids, the squirrel-sized Chiromyoides from the Late Paleocene of Europe and North America . Chiromyoides can be characterized as a super-robust version of Plesiadapis, with considerably shortened and deepened jaw and muzzle, and with extremely robust incisors that bear sharp cutting edges. Obviously its feeding mechanism had to withstand much higher forces than in other plesiadapids. Jaws and teeth of Chiromyoides closely resemble those of the aye-aye, which was sometimes called Chiromys in previous times - hence the name of the plesiadapid. The aye-aye uses its enlarged incisors to gnaw into wood in search of grubs. Chiromyoides may have occupied a similar niche in the forests of the Late Paleocene. This specialization would also explain its rarity in the mammal communities of that time.

Right again, Samantha!