Allotheria

File:Xianshou linglong skull.svg

Skull of Xianshou, a euharamiyidan

Allotheria (from Ancient Greek αλλός (allós), meaning "other", and θηρίον (theríon), meaning "beast") is an extinct clade of theriiform mammals known from the Mesozoic and early Cenozoic. Shared characteristics of the group are the presence of lower molariform teeth equipped with longitudinal rows of cusps<ref>Template:Cite journal</ref> and enlarged incisors.<ref name=":0">Template:Cite journal</ref> Typically, the canine teeth are also lost.<ref name=":0" /> Allotheria includes Multituberculata, Gondwanatheria (which may be part of Multituberculata, as the sister group to Cimolodonta),<ref>Template:Cite journal</ref><ref name="Krause, et al">Template:Cite journal</ref><ref name="Drake">{{#invoke:citation/CS1|citation |CitationClass=web }}</ref><ref name="NYT-20141105-JNW">Template:Cite news</ref> and probably Haramiyida,<ref>Template:Cite journal</ref> (sometimes only including Euharamiyida<ref name=":0" />) although some studies have recovered haramiyidans to be basal mammaliaforms unrelated to multituberculates.<ref name="PNAS-20151116-zzxl">Template:Cite journal</ref> Allotherians are often placed as crown group mammals, more closely related to living marsupials and placentals (Theria) than to monotremes or eutriconodonts,<ref name=":0" /> though some studies place the entirety of Allotheria outside of crown Mammalia.<ref>Template:Cite journal</ref><ref>Template:Cite journal</ref>

Further reading

Zofia Kielan-Jaworowska, Richard L. Cifelli, and Zhe-Xi Luo, Mammals from the Age of Dinosaurs: Origins, Evolution, and Structure (New York: Columbia University Press, 2004), 249.