Brucemacfaddenia

Brucemacfaddenia; Temporal range: Late Oligocene (Deseadan); ~
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	†Notoungulata
Family:	†Interatheriidae
Subfamily:	†Interatheriinae
Genus:	†Brucemacfaddenia; Hitz et al. 2008
Species:	†B. boliviensis
Binomial name
	†Brucemacfaddenia boliviensis; Hitz et al. 2008

Brucemacfaddenia is an extinct genus of interatheriine notoungulates that lived during the Late Oligocene in what is now Bolivia. Fossils of this genus have been found in the Salla Formation of Bolivia.[1]

Etymology

The genus name, Brucemacfaddenia, refers to Bruce MacFadden, known for his significant contributions of Cenozoic mammal evolution in Bolivia. paleontology. The specific name, boliviensis, refers to Bolivia, the country where it was found in.[1]

Description

Brucemacfaddenia was a small-sized interatheriid. The derived features of Brucemacfaddenia that set it apart from other basal interatheriines such as Proargyrohyrax and Santiagorothia, by having hypselodont cheek teeth an completely persistent lingual sulcus on the upper molars. Its deciduous upper detention had thin enamel.[1][2]

Taxonomy

Brucemacfaddenia was first described in 2008 based on remains found in the Salla Formation, in the La Paz Department, Bolivia, dating to the Late Oligocene, around 29 to 23 mya. It was described alongside another interatheriid, Federicoanaya sallaensis. It is a basal member of the Interatheriidae family, more specifically within the subfamily Interatheriinae.

The following cladogram of the Interatheriinae is based on Vera et al. 2017, showing the position of Brucemacfaddenia.[3]

Interatheriinae

Eopachyrucos pliciferus

Santiagorothia chiliensis

Federicoanaya sallaensis

Brucemacfaddenia boliviensis

Archaeophylus patrius

Progaleopithecus tournoueri

Argyrohyrax proavus

	Interatherium robustum

	Cochilius volvens

Protypotherium australe

Protypotherium endiadys

Protypotherium distinctum

Protypotherium sinclairi

Miocochilius federicoi

Miocochilius anamopodus

	Protypotherium minutum

	Protypotherium colloncurensis

References

Hitz, Ralph B.; Billet, Guillaume; Derryberry, Dewayne (2008). "New interatheres (Mammalia, Notoungulata) from the Late Oligocene Salla beds of Bolivia". Journal of Paleontology. 82 (3): 447–469. doi:10.1666/07-022.1. ISSN 0022-3360. S2CID 85682776.
Croft, Darin A.; Weinstein, Deborah (2008-11-04). "The first application of the mesowear method to endemic South American ungulates (Notoungulata)". Palaeogeography, Palaeoclimatology, Palaeoecology. 269 (1): 103–114. doi:10.1016/j.palaeo.2008.08.007. ISSN 0031-0182.
Vera, Bárbara Soledad; Reguero, Marcelo Alfredo; Gonzalez, Laureano Raul (December 2017). "The Interatheriinae notoungulates from the middle Miocene Collón Curá Formation in Argentina". Acta Palaeontologica Polonica. 62. doi:10.4202/app.00373.2017. hdl:11336/56874.

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[Hitz_et_al._2008-1] Hitz, Ralph B.; Billet, Guillaume; Derryberry, Dewayne (2008). "New interatheres (Mammalia, Notoungulata) from the Late Oligocene Salla beds of Bolivia". Journal of Paleontology. 82 (3): 447–469. doi:10.1666/07-022.1. ISSN 0022-3360. S2CID 85682776.

[Croft_and_Weinstein_2008-2] Croft, Darin A.; Weinstein, Deborah (2008-11-04). "The first application of the mesowear method to endemic South American ungulates (Notoungulata)". Palaeogeography, Palaeoclimatology, Palaeoecology. 269 (1): 103–114. doi:10.1016/j.palaeo.2008.08.007. ISSN 0031-0182.

[InteratheriinaefromtheCollónCuráFormation-3] Vera, Bárbara Soledad; Reguero, Marcelo Alfredo; Gonzalez, Laureano Raul (December 2017). "The Interatheriinae notoungulates from the middle Miocene Collón Curá Formation in Argentina". Acta Palaeontologica Polonica. 62. doi:10.4202/app.00373.2017. hdl:11336/56874.