What is Allotheria?
{{Taxobox | name = '''Allotheria''' | fossil_range = [[Upper Triassic]] – [[Oligocene]] | image = Ptilodus skull BW.jpg | image_width= 200px | image_caption = Skull of ''Ptilodus'' | regnum = [[Animal]]ia | phylum = [[Chordata]] | classis = [[Mammalia]] | subclassis = [[Theriiformes]] | infraclassis = '''Allotheria''' | subdivision_ranks = [[Order (biology)|Orders]] | subdivision = *†[[Eleutherodontida]] *†[[Gondwanatheria]] *†[[Haramiyida]] *†[[Multituberculata]]}} The '''Allotheria''' are an [[extinct]] infra[[Class (biology)|class]] or super[[Order (biology)|order]] of [[mammal]]s. They are related to the [[prototheria]] and [[theria]]. The allotheres was a branch of successful [[Mesozoic]] mammals. The most important characteristic was the presence of lower [[molar]]iform [[teeth]] with two longitudinal rows of [[cusp]]s. Allotheres also had a narrow [[pelvis]], indicating that they gave birth to tiny, helpless young as [[marsupials]] do. The [[Haramiyida]] from the [[Triassic]] period were the earliest group, and the [[Multituberculate]]s survived until the [[Oligocene]], 35 million years ago.<ref>Butler P.M. 2000. Review of the early allotherian mammals. Acta Palaeontologica Polonica 45(4) 317-342. [http://app.pan.pl/archive/published/app45/app45-317.pdf]</ref> == References == {{reflist}} {{biology-stub}} [[Category:Extinct mammals]] [[Category:Fossils]]