''Eutatus'' is an extinct
genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nom ...
of large
armadillos of the
family
Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...
Chlamyphoridae
Chlamyphoridae is a family of cingulate mammals. While glyptodonts have traditionally been considered stem-group cingulates outside the group that contains modern armadillos, there had been speculation that the extant family Dasypodidae could ...
. It was endemic to
South America
South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere at the northern tip of the continent. It can also be described as the sout ...
from the
Early Miocene
The Early Miocene (also known as Lower Miocene) is a sub-epoch of the Miocene epoch (geology), Epoch made up of two faunal stage, stages: the Aquitanian age, Aquitanian and Burdigalian stages.
The sub-epoch lasted from 23.03 ± 0.05 annum, Ma to ...
to
Late Pleistocene, living from 17.5
Ma-11,000 years ago, with possible survival into the early
Holocene
The Holocene ( ) is the current geological epoch. It began approximately 11,650 cal years Before Present (), after the Last Glacial Period, which concluded with the Holocene glacial retreat. The Holocene and the preceding Pleistocene togeth ...
(~ 7,500 BP)
and existing for approximately .
[''Eutatus'']
at Fossilworks.org Based on carbon isotope ratios, it is thought to have been an herbivore that
fed on grasses.
Taxonomy
''Eutatus'' was named by Gervais (1867). The type
species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...
is ''E. seguini''. It was assigned to
Dasypodidae
Dasypodidae is a family of mostly extinct genera of armadillos. One genus, ''Dasypus'', is extant, with at least seven living species.
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Classification
Below is a taxonomy of armadillos in this family.
Family Dasypodidae
*† Genus ...
by Carroll (1988).
[R. L. Carroll. 1988. Vertebrate Paleontology and Evolution. W.H. Freeman and Company]
Fossil distribution
The fossil remains are confined to
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 ...
and have been found in the
Santacrucian 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 ...
,
[Coy Inlet]
at Fossilworks.org Ensenadan
The Ensenadan age is a period of geologic time (1.2–0.8 Ma) within the Early Pleistocene epoch of the Quaternary
The Quaternary ( ) is the current and most recent of the three periods of the Cenozoic Era in the geologic time scale of the ...
Miramar Formation,
[Punta Hermengo]
at Fossilworks.org and the
Lujanian
The Lujanian age is a South American land mammal age within the Pleistocene and Holocene epochs of the Neogene, from 0.8–0.011 Ma or 800–11 tya. It follows the Ensenadan.
The age is usually divided into the middle Pleistocene Bonaerian stag ...
Luján Formation Luján, Luxan or Luhan, a Spanish people, Spanish surname and given name, might refer to:
Tony Lujan
Jazz musician.Composer
Artist
Trumpet And Flughelhorn
Born 1956 Albuquerque NM.
World Renowned.
Extensive Resume.
N M Music Hall Of Fame 2020
Ove ...
.
[Paso Otero-Pardo]
at Fossilworks.org
Gallery
References
{{Taxonbar, from=Q5414384
Armadillos
Prehistoric placental genera
Prehistoric cingulates
Pleistocene xenarthrans
Burdigalian first appearances
Pleistocene genus extinctions
Pleistocene mammals of South America
Santacrucian
Ensenadan
Lujanian
Neogene Argentina
Fossils of Argentina
Fossil taxa described in 1867