Laguna de los Paraguayos - North of the town: Huayquerian, Argentina
collected by Cabrera, Alsina 1939
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Mammalia
- Cingulata
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Hoplophractus tapinocefalus n. gen., n. sp.
Cabrera 1939
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Cabrera 1939 | |||||||||
| Holotype: MLP 37-III-7-7 (previously Hoplophractus tapinocefalus) | ||||||||||
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= Hoplophractus tapinocefalus n. sp.
Cabrera 1939
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Zurita and Aramayo 2007 | |||||||||
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Mammalia
- Mylodontidae
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Elassotherium altirostre n. gen., n. sp.
Cabrera 1939
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Cabrera 1939 | |||||||||
| the type | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Argentina | State/province: | Buenos Aires | County: | Adolfo Alsina |
| Coordinates: | 37.1° South, 62.8° West (view map) | ||||
| Paleocoordinates: | 37.3° South, 60.5° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | small collection |
Time
| Period: | Neogene |
| 10 m.y. bin: | Cenozoic 6 |
| Key time interval: | Huayquerian |
| Age range of interval: | 7.9 - 4.9 m.y. ago |
Stratigraphy
| Formation: | Epecuén | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: The fossils were extracted from two different layers, placed in accordance with each other, as can be seen in the ravines of the small dry channels that cut the Robillote field.
I do not want to venture to designate these layers with particular names, further complicating the too leafy nomenclature of our formations, and I will limit myself to saying that they evidently belong to the Pliocene, judging by their fossils, which show close links with those of the Araucanian . As corresponds to their relative position, those of the ocreous layer present somewhat more archaic characteristics than those of the gray, which is undoubtedly Upper Pliocene; but the difference in antiquity between the two fans must not, however, have been very great. From newer literature, the Epecuen formation has been dated as Huayquerian. | |||||
Lithology and environment
| Primary lithology: | condensed,red,yellow calcareous siltstone |
| Secondary lithology: | very fine,gray,yellow calcareous siltstone |
| Includes fossils? | Y |
| Includes fossils? | Y |
| Lithology description: The upper layer, a very polished yellowish-gray in color, consists of extremely fine-grained and crumbly silt, consisting mainly, according to an analysis that I owe to the kindness of Dr. Walther Schiller, by crypto-Christian calcium carbonate. This layer, which is superficial in the Robilotte field, is the one that has provided the largest number of fossils. The layer underneath is a more compact material, much harder and reddish-ocher in color, and it seems to be the least frequent fossil remains. In the bed of the lagoon of Los Paraguayos, this is the terrain that appears superficially. | |
| Environment: | terrestrial indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis | ||
| Museum repositories: | MLP | ||
| Collectors: | Cabrera, Alsina | Collection dates: | 1939 |
Metadata
| Database number: | 207619 | ||
| Authorizer: | P. Mannion | Enterer: | M. Kouvari |
| Modifier: | P. Mannion | Research group: | vertebrate |
| Created: | 2020-01-22 02:13:18 | Last modified: | 2020-08-10 11:39:09 |
| Access level: | the public | Released: | 2020-01-22 02:13:18 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 71591. | A. E. Zurita and S. A. Aramayo. 2007. New remains of Eosclerocalyptus tapinocephalus (Cabrera) (Mammalia, Xenarthra, Glyptodontidae): description and implications for its taxonomic status. Rivista Italiana di Paleontologia e Stratigrafia 113(1):57-66 [P. Mannion/M. Kouvari/M. Kouvari] |
Secondary references:
| 73330 | A. Cabrera. 1939. Sobre Vertebrados Fósiles del Plioceno de Adolfo Alsina. Revista del Museo de La Plata 2(6):3-35 [P. Mannion/M. Kouvari] |