''Anisolophus'' is an extinct genus of proterotheriid from the Early to Middle

Miocene The Miocene ( ) is the first geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and means "less recen ...

Argentina Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southern half of South America. Argentina covers an area of , making it the second-largest country in South America after Brazil, th ...

. The genus was named by Burmeister in 1885 to accommodate the species ''

Anchitherium ''Anchitherium'' (meaning ''near beast'') was a fossil horse with a three-toed hoof. ''Anchitherium'' was a browsing (leaf eating) horse that originated in the early Miocene of North America and subsequently dispersed to Europe and Asia,(in Ch ...

australe'', which they had named earlier in 1879. Soria then referred the species ''Licaphrium floweri'' and ''Anisolophus minisculus'' to the genus, making ''Licaphrium'', named in 1887 by

Florentino Ameghino Florentino Ameghino (born Giovanni Battista Fiorino Giuseppe Ameghino September 19, 1853 – August 6, 1911) was an Argentine naturalist, paleontologist, anthropologist and zoologist, whose fossil discoveries on the Argentine Pampas, especially ...

, a junior synonym of the genus. Both ''A. australis'' and ''A. floweri'' are known from the

Santacrucian The Santacrucian age is a period of geologic time (17.5 – 16.3 Ma) within the Early Miocene epoch of the Neogene, used more specifically with SALMA classification in South America. It follows the Colhuehuapian and precedes the Friasian age. ...

age

Santa Cruz Formation The Santa Cruz Formation is a geological formation in the Magallanes/Austral Basin in southern Patagonia in Argentina and in adjacent areas of Chile. It dates to the late Early Miocene epoch, and is contemporaneous with eponymous Santacrucian S ...

, while ''A. minisculus'' is known from the

Collón Curá Formation The Collón Curá Formation ( es, Formación Collón Curá) is a Middle Miocene fossiliferous geological formation of the southern Neuquén Basin in northwestern Patagonia and the western Cañadón Asfalto Basin of central Patagonia, Argentina. Th ...

. ''Anisolophus'' is considered the senior synonym of the genus ''Licaphrium'', which was named in 1887 by Ameghino for the species ''L. floweri'', now ''A. floweri''. Many other species of ''Licaphrium'' were named, many of which are considered synonyms of ''A. floweri'', ''

Tetramerorhinus ''Tetramerorhinus'' is an extinct genus of proterotheriid litoptern that lived during the Early and Middle Miocene in what is now Argentina and Peru. Description This animal resembled a small horse, with slender, elongated legs. The body was a ...

'', ''

Neobrachytherium ''Neobrachytherium'' is an extinct genus of proterotheriid mammal from the Late Miocene of Argentina and Uruguay. It is represented by multiple species, including the type ''N. intermedium'', originally named in 1891 by Moreno and Mercerat as a ...

'', or '' Lophogonodon'', as well as the

dubious Doubt is a mental state in which the mind remains suspended between two or more contradictory propositions, unable to be certain of any of them. Doubt on an emotional level is indecision between belief and disbelief. It may involve uncertainty, ...

''Licaphrium debile'', ''L. arenarum'', ''L. intermissum'', ''L. parvulum''. Two invalid species of ''Anisolophus'' are known, ''A. fischeri'', and ''A. acer'', which are both dubious and also known as '' Diaphragmodon fischeri'' or '' Heptaconus acer''.

References

{{Taxonbar, from=Q111838955 Proterotheriids Miocene mammals of South America Prehistoric placental genera Neogene Argentina Fossils of Argentina Colloncuran Friasian Santacrucian Fossil taxa described in 1885