Inchasi: Chapadmalalan, Bolivia
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Mammalia
- Notoungulata
- Mesotheriidae
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Mesotheriidae indet.
Alston 1876
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| said to be new | ||||||||||
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Hypsitherium bolivianum n. gen., n. sp.
Anaya and MacFadden 1995
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Anaya and MacFadden 1995 | |||||||||
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Mammalia
- Notoungulata
- Toxodontidae
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Posnanskytherium sp.
Liendo Lazarte 1943
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Posnanskytherium desaguaderoi
Liendo Lazarte 1943
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Posnanskytherium inchasense n. sp.
Anaya and MacFadden 1995
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Anaya and MacFadden 1995 | |||||||||
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Mammalia
- Panameriungulata
- Macraucheniidae
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Promacrauchenia sp.
Ameghino 1904
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Mammalia
- Rodentia
- Caviidae
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Caviodon sp.
Ameghino 1885
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Mammalia
- Rodentia
- Hydrochoeridae
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Chapalmatherium cf. saavedrai
Hoffstetter et al. 1984
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= Phugatherium saavedrai
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Deschamps et al. 2013 | |||||||||
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Mammalia
- Cingulata
- Pampatheriidae
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Plaina sp.
Castellanos 1927
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Plaina intermedia
Castellanos 1937
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Anaya and MacFadden 1995 | |||||||||
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Mammalia
- Cingulata
- Glyptodontidae
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Paraglyptodon sp.
Castellanos 1932
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Plohophorus sp.
Ameghino 1887
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Mammalia
- Mylodontidae
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Proscelidodon patrius
Ameghino 1888
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Mylodontinae indet.
Gill 1872
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Glossotherium cf. chapadmalensis
(Kraglievich 1925)
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| re-assigned to Simomylodon uccasamamensis by Boscaini et al 2018 | ||||||||||
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= Simomylodon uccasamamensis
Saint-André et al. 2010
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Boscaini et al. 2019 | |||||||||
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Mammalia
- Megatheriidae
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Megatheriinae indet.
Gill 1872
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| see common names | ||||||||||
Geography
| Country: | Bolivia | State/province: | Linares | County: | Potosi |
| Coordinates: | 19.7° South, 65.5° West (view map) | ||||
| Paleocoordinates: | 19.8° South, 64.5° West | ||||
| Basis of coordinate: | stated in text | ||||
| Altitude: | 3220 meters | ||||
| Geographic resolution: | local area |
Time
| Period: | Neogene | Epoch: | Pliocene |
| 10 m.y. bin: | Cenozoic 6 | ||
| Key time interval: | Chapadmalalan | ||
| Age range of interval: | 3.70000 - 2.90000 m.y. ago | ||
| Age estimate: | 4 to 3.3 Ma (paleomagnetic) |
Stratigraphy
| Stratigraphic resolution: | member | ||||
| Stratigraphy comments: Boscaini et al 2018: Its fossiliferous beds have been dated to between 4.0 and 3.3 Myr (late Early Pliocene; MacFadden et al., 1993; Anaya & MacFadden, 1995).The Inchasi locality is Chapadmalalan in age (Cione & Tonni, 1996).
"a 120 m thick [composite] section" and "numerous fossiliferous horizons" (nine shown on a figure) were found in all five measured sections, spanning approximately the 35 - 110 m interval the entire section is estimated to span 0.61 m.y. and correlate with the Cochiti through Mammoth subchrons of the Gilbert and Gauss chrons based on paleomagnetic stratigraphy | |||||
Lithology and environment
| Primary lithology: | conglomerate |
| Secondary lithology: | siltstone |
| Lithology description: "the dominant lithologies are high-energy fluvial gravels interbedded with finer-grained clays and silts" | |
| Environment: | fluvial indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | biostratigraphic analysis |
| Collection method comments: initial collections were made in 1989 by the authors | |
Metadata
| Database number: | 71112 | ||
| Authorizer: | J. Alroy, P. Mannion, C. Jaramillo | Enterer: | J. Alroy, M. Kouvari, J. Carrillo, C. Jaramillo |
| Modifier: | M. Kouvari | Research group: | vertebrate |
| Created: | 2007-04-18 21:57:30 | Last modified: | 2018-12-12 08:33:56 |
| Access level: | the public | Released: | 2007-04-18 21:57:30 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 23837. | B. J. MacFadden, F. Anaya, and J. Argollo. 1993. Magnetic polarity stratigraphy of Inchasi: a Pliocene mammal-bearing locality from the Bolivian Andes deposited just before the Great American Interchange. Earth and Planetary Science Letters 114(2-3):229-241 [J. Alroy/J. Alroy/M. Uhen] |
Secondary references:
| 51719 | F. Anaya and B. J. MacFadden. 1995. Pliocene mammals from Inchasi, Bolivia: The endemic fauna just before the Great American Interchange. Bulletin of the Florida Museum of Natural History 39(3):87-140 [C. Jaramillo/J. Carrillo] | |
| 67543 | A. Boscaini, T. J. Gaudin, B. Mamani Quispe, P. Munch, P.-O. Antoine and F. Pujos. 2019. New well-preserved craniodental remains of Simomylodon uccasamamensis (Xenarthra: Mylodontidae) from the Pliocene of the Bolivian Altiplano: phylogenetic, chronostratigraphic and palaeobiogeographical implications. Zoological Journal of the Linnean Society 185(2):459-486 [P. Mannion/M. Kouvari/P. Mannion] | |
| 54852 | C. M. Deschamps, M. G. Vucetich, and C. I. M. A. Montalvo Zárate. 2013. Capybaras (Rodentia, Hydrochoeridae, Hydrochoerinae) and their bearing in the calibration of the late Miocene-Pliocene sequences of South America. Journal of South American Earth Sciences 48:145-158 [C. Jaramillo/C. Jaramillo/M. Uhen] |