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Gondwanatheria
Gondwanatheria is an extinct group of mammaliaforms that lived in parts of Gondwana, including Madagascar, India, South America, Africa and Antarctica during the Upper Cretaceous through the Paleogene (and possibly much earlier, if '' Allostaffia'' is a member of this group). Until recently, they were known only from isolated teeth, a few lower jaws, two partial skulls and one complete cranium. They are generally considered to be closely related to the multituberculates and likely the euharamiyidians, well known from the Northern Hemisphere, with which they form the clade Allotheria. Classification For several decades the affinities of the group were not clear, being first interpreted as early xenarthrans, or "toothless" mammals similar to the modern anteater. A variety of studies have placed them as allotheres related to multituberculates, possibly even true multituberculates, closer to cimolodonts than "plagiaulacidans" are. However, a more recent study recovered them as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ferugliotheriidae
Ferugliotheriidae is one of three known family (biology), families in the order (biology), order Gondwanatheria, an enigmatic group of extinction, extinct mammals. Gondwanatheres have been classified as a group of uncertain affinities or as members of Multituberculata, a major extinct mammalian order. The best-known representative of Ferugliotheriidae is the genus ''Ferugliotherium'' from the Late Cretaceous epoch in Argentina. A second genus, ''Trapalcotherium'', is known from a single tooth, a first lower wikt:molariform, molariform (Molar (tooth), molar-like tooth), from a different Late Cretaceous Argentinean locality. Another genus known from a single tooth (in this case, a fourth lower premolar), ''Argentodites'', was first described as an unrelated multituberculate, but later identified as possibly related to ''Ferugliotherium''. Finally, a single tooth from the Paleogene of Peru, LACM 149371, perhaps a last upper molariform, and a recent specimen from Mexico, may represent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
