Eopachyrucos | |
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Mandible of Eopachyrucos pliciformis | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Mammalia |
Order: | † Notoungulata |
Family: | † Interatheriidae |
Subfamily: | † Interatheriinae |
Genus: | †
Eopachyrucos Ameghino 1901 |
Type species | |
†Eopachyrucos pliciformis
Ameghino, 1901
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Species | |
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Synonyms | |
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Eopachyrucos is an extinct genus of interatheriid notoungulates that lived from the Middle Eocene to the Late Oligocene of Argentina and Uruguay. [1] Fossils of this genus have been found in the Sarmiento Formation of Argentina and the Fray Bentos Formation of Uruguay. [2] [3]
Eopachyrucos was first named in 1901 by Florentino Ameghino based on fragmentary remains found in the Sarmiento Formation of Argentina. [4] He originally considered it as a member of the family Hegetotheriidae, as an ancestor of Pachyrukhos, as reflected in its name ("dawn Pachyrukhos"), however, recent studies have confirmed it to be a member of the family Interatheriidae, more specifically within the subfamily Interatheriinae.
The following cladogram of the Interatheriinae is based on Vera et al. 2017, showing the position of Eopachyrucos. [5]
Interatheriinae |
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