''Henosferus'' is an extinct genus of

australosphenida The Australosphenida are a clade of mammals, containing mammals with tribosphenic molars, known from the Jurassic to Mid-Cretaceous of Gondwana. They are thought to have acquired their tribosphenic molars independently from those of Tribosphenid ...

mammal Mammals () are a group of vertebrate animals constituting the class Mammalia (), characterized by the presence of mammary glands which in females produce milk for feeding (nursing) their young, a neocortex (a region of the brain), fur ...

from

Lower Jurassic The Early Jurassic Epoch (in chronostratigraphy corresponding to the Lower Jurassic Series) is the earliest of three epochs of the Jurassic Period. The Early Jurassic starts immediately after the Triassic-Jurassic extinction event, 201.3 Ma&nb ...

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 List of South American countries by area, second-largest ...

. The only recorded species, ''Henosferus molus'', was found in the

Cañadón Asfalto Formation The Cañadón Asfalto Formation is a Lower Jurassic to Late Jurassic geologic formation, from the Jurassic period of the Mesozoic Era. Its age is controversial, uranium-lead dating of the volcanic tuff beds having given various different age ...

of the Cañadón Asfalto Basin in

Chubut Province Chubut ( es, Provincia del Chubut, ; cy, Talaith Chubut) is a province in southern Argentina, situated between the 42nd parallel south (the border with Río Negro Province), the 46th parallel south (bordering Santa Cruz Province), the Ande ...

, Patagonia.Rougier, G. W., Martinelli, A. G., Forasiepi, A. M. & Novacek, M. J. 2007. ''New Jurassic mammals from Patagonia, Argentina: A reappraisal of australosphenidan morphology and interrelationships''. ''American Museum Novitates'' 3566: 1-54. The species is known only from 3 lower jaws and possibly an upper molar.

References

Australosphenida Bathonian life Jurassic mammals of South America Middle Jurassic tetrapods of South America Jurassic Argentina Fossils of Argentina Cañadón Asfalto Formation Fossil taxa described in 2007 Prehistoric mammal genera {{Jurassic-mammal-stub