Some of these animals were large for their time; " Taeniolabis taoensis " is the largest known multituberculate and though smaller, " Yubaatar " is the largest known Mesozoic Asian multituberculate.
42.
Because some of this jaw's features were thought to be incompatible with a multituberculate identity, they regarded gondwanatheres ( including " Ferugliotherium " ) as Mammalia " incertae sedis ".
43.
On the basis of the morphological features of the jaw fragment, they argued that gondwanatheres are not closely related to any other multituberculate group, and consequently placed them in a suborder of their own, Gondwanatheria.
44.
The recently described " Indobaatar " from the Early Jurassic Kota Formation is the earliest known multituberculate, let alone the earliest eobaatarid, and may stretch the eobaatarid-cimolodontan group much earlier than previously thought.
45.
Also in 1990, Bonaparte merged the family Gondwanatheriidae into Sudamericidae and, together with David Krause, redefined Gondwanatheria as a multituberculate suborder that included both Ferugliotheriidae and Sudamericidae, thus rejecting a relationship between gondwanatheres and xenarthrans.
46.
Other mammal remains include the broken tooth UA 8699, which as been interpreted both as metatherian and as eutherian, a non-gondwanathere multituberculate tooth fragment, and a yet undescribed mammal known from an articulated skeleton.
47.
This jaw fragment showed that " Sudamerica " had four molariform teeth on each side of the lower jaws, more than any multituberculate, and consequently they removed gondwanatheres from Multituberculata and regarded their affinities as uncertain.
48.
The specimen MACN Pv-RN 975, first described by Kielan-Jaworowska and Bonaparte in 1996, may be a jaw fragment of " Ferugliotherium ", although it has also been identified as an unrelated multituberculate.
49.
It is known from a small fragment of the left lower jaw, including the third and fourth premolars, as well as two upper premolars . " Kielanobaatar " is the first record of an Asian albionbaatarid multituberculate.
50.
On the basis of a single p4, Kielan-Jaworowska and colleagues named " Argentodites coloniensis ", from the Late Cretaceous La Colonia Formation of Argentina, in 2007 as a multituberculate, possibly referable to the suborder Cimolodonta.
