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Chlorocyon phantasma, a late Eocene borhyaenoid (Mammalia, Metatheria, Sparassodonta) from the Los Helados locality, Andean Main Range, central Chile. (American Museum novitates, 0003-0082 ; no. 3918)

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dc.contributor.author Engelman, Russell K.
dc.contributor.author Flynn, John J. (John Joseph), 1955-
dc.contributor.author Gans, Phillip B., 1956-
dc.contributor.author Wyss, André R.
dc.contributor.author Croft, Darin A.
dc.date.accessioned 2018-12-31T05:50:31Z
dc.date.available 2018-12-31T05:50:31Z
dc.date.issued 2018-12-28
dc.identifier.uri http://digitallibrary.amnh.org/handle/2246/6922
dc.description 22 pages : illustrations (some color), map ; 26 cm. en_US
dc.description.abstract Sparassodont metatherians were the dominant terrestrial mammalian predators during South America's long Cenozoic isolation. This group's early fossil record is very poor, however, particularly for the late Eocene and early Oligocene. Here, we describe a new sparassodont, Chlorocyon phantasma, gen. et sp. nov., based on a specimen from Los Helados, a new locality within the Abanico Formation of the Andean Main Range of central Chile. New ⁴⁰Ar/³⁹Ar dates at Los Helados bracketing the fossil-bearing level constrain the age of this specimen to 37-36 Ma (late Eocene), indicating that this new taxon likely pertains to the Mustersan South American Land Mammal "Age." Chlorocyon is the first Paleogene sparassodont reported from Chile and the first sparassodont described from the Abanico Formation. Distinctive features, including a p3 with an anterior edge that is more curved than the posterior edge and the lack of a hypoconulid on m4, suggest that Chlorocyon is a borhyaenoid closely related to Pharsophorus or Plesiofelis, although much smaller. Chlorocyon represents a welcome addition to the sparse record of late Eocene sparassodonts and indicates that the diversity of non-proborhyaenid borhyaenoids prior to the late Oligocene was greater than previously thought. en_US
dc.language.iso en_US en_US
dc.publisher American Museum of Natural History. en_US
dc.relation.ispartofseries American Museum novitates;no.3918.
dc.subject Chlorocyon phantasma. en_US
dc.subject Sparassodonta. en_US
dc.subject Paleontology -- Eocene. en_US
dc.subject Tinguiririca River Region (Chile) en_US
dc.subject Abanico Formation (Chile) en_US
dc.subject Chile. en_US
dc.title Chlorocyon phantasma, a late Eocene borhyaenoid (Mammalia, Metatheria, Sparassodonta) from the Los Helados locality, Andean Main Range, central Chile. (American Museum novitates, 0003-0082 ; no. 3918) en_US


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  • American Museum Novitates
    Novitates (Latin for "new acquaintances"), published continuously and numbered consecutively since 1921, are short papers that contain descriptions of new forms and reports in zoology, paleontology, and geology. New numbers are published at irregular intervals.

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