Glires

Glires is a hypothetical grandorder that currently categorizes Scandentia, Rodentia, and Lagomorpha. Apparently the existence of it as a concept has helped scientists with their genetic research. https://en.wikipedia.org/w/index.php?title=Glires&oldid=1137411245 In the past Carl Linnaeus had used it as his fourth category of mammals. It consisted of porcupines, beavers, beaver-rats, rats, mice, hamsters, mole rats, marmots, squirrels, flying squirrels, jerboas, hares, and ashkokos. Basically anything that we'd call a "rodent" today.
Category:Glires
Category:Rodents
Category:Lagomorpha
Category:Rabbits
Category:Extinct rabbits