Professor Owen observes:-"That the marsupialia form one great natural group is now generally admitted by zoologists.
"The History of Tasmania, Volume I (of 2)"
John West
In fact, as I have recently endeavoured to prove to the Society, there was an Arctogaeal continent and an Arctogaeal province of distribution in Triassic times as there is now; and the Sauropsida and marsupialia which constituted that fauna were, I doubt not, the progenitors of the Sauropsida and marsupialia of the whole Mesozoic epoch.
"Critiques and Addresses"
Thomas Henry Huxley
The field mouse and rabbits are rodentia, the deer ungulata, the kangaroos marsupialia.
"Concerning Animals and Other Matters"
E.H. Aitken, (AKA Edward Hamilton)