Lacayani Fauna: Deseadan, Bolivia
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Mammalia
- Sparassodonta
- Borhyaenidae
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Borhyaenidae indet.
Savage 1951
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2 specimens | |||||||||
| mandible fragments | ||||||||||
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Mammalia
- Groeberida
- Nototheriidae
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Orophodontidae indet.
Ameghino 1894
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Glyptatelus sp.
Ameghino 1897
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| rare "plates" | ||||||||||
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Dasypodidae indet.
(Gray 1821)
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| "plates" like those from Salla Fauna | ||||||||||
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Mammalia
- Notoungulata
- Mesotheriidae
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Trachytherus cf. spegazzinianus
Ameghino 1889
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= Trachytherus spegazzinianus
Ameghino 1889
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Billet et al. 2008 | |||||||||
| MNHN LAC 2, LAC 14-22; MNHN-BOL-V | ||||||||||
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Mammalia
- Notoungulata
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Prohegetotherium sp.
Ameghino 1897
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| similar to Salla Fauna, Prohegetotherium | ||||||||||
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Mammalia
- Panameriungulata
- Macraucheniidae
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Macraucheniidae indet.
Ameghino 1889
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| similar size of Salla, cf. Coniopternium, different morphology | ||||||||||
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Mammalia
- Rodentia
- Cephalomyidae
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Eocardiidae indet.
Ameghino 1891
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= Cephalomyidae indet.
Ameghino 1897
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Vucetich 1989 | |||||||||
| "Morphotype 3". MNHN BLV 167, an isolated right M1 or M2; and MNHN BLV 168, an isolated left M1 or M2. | ||||||||||
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= Cephalomyopsis informal morphotype 2
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Vucetich et al. 2014 | |||||||||
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Mammalia
- Rodentia
- Chinchillidae
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cf. Scotamys sp.
Loomis 1914
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= Eoviscaccia boliviana n. gen., n. sp.
Vucetich 1989
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Vucetich 1989 | |||||||||
| MNHN BLV 164, right palatal fragment P4-M3, holotype; MNHN BLV 158,a left mandibular fragment with P4 -M2 ; MNHN BLV 4J 161, left P - M : M N H N BLV 163, right mandibular fragment with P and left mandibular fragment with 4 P -M ; MNHN BLV 169-187, a large number of isolated teeth. | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Bolivia | State/province: | None |
| Coordinates: | 16.6° South, 67.9° West (view map) | ||
| Paleocoordinates: | 17.8° South, 62.2° West | ||
| Basis of coordinate: | stated in text | ||
| Altitude: | 3400 meters | ||
| Geographic resolution: | outcrop |
Time
| 10 m.y. bin: | Cenozoic 4-5 | ||
| *Period: | Middle Tertiary | *Epoch: | Late/Upper Oligocene | *Local age/stage: | Deseadan |
| Key time interval: | Deseadan | ||
| Age range of interval: | 28.9 - 20.9 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Stratigraphic resolution: | formation | ||||
| Stratigraphy comments: Overlying the Puca Group represented by tectonically deformed Cretaceous and Paleogene layers.
This collection had Puca group assigned, but this group has a late age of Paleocene. The Lacayani fauna comes from rocks overlying the Puca group. | |||||
Lithology and environment
| Primary lithology: | red claystone |
| Secondary lithology: | brown,yellow conglomeratic sandstone |
| Includes fossils? | Y |
| Lithology description: reddish clays (fossiliferous sediments), alternating muds, brown-yellow sands and conglomerates (made up of metasedimentary, sandstone, Cretaceous volcanic clasts) | |
| Environment: | terrestrial indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
| Disassociated minor elements: | all |
Collection methods and comments
| Collection excludes: | some genera |
| Collection methods: | surface (float),field collection |
| Reason for describing collection: | taxonomic analysis |
| Taxonomic list comments:Unlike Salla Rodents, Lacayani Rodents are strongly hypsodont | |
Metadata
| Also known as: | Deseadian | ||
| Database number: | 13276 | ||
| Authorizer: | J. Alroy, P. Mannion, J. Zijlstra | Enterer: | R. Whatley, J. Zijlstra, P. Mannion |
| Modifier: | M. Kouvari | Research group: | vertebrate |
| Created: | 2002-02-12 18:57:57 | Last modified: | 2020-09-09 08:27:29 |
| Access level: | the public | Released: | 2002-02-12 18:57:57 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 6438. | 5% 37400 | R. Hoffstetter, C. Martinez, M. Mattauer and P. Tomasi. 1971. Lacayani, a new Bolivian horizon of deseadian mammals; lower Oligocene. (Lacayani, un nouveau gisement bolivien de Mammiferes deseadiens (Oligocene inferieur).). Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences, Serie D: Sciences Naturelles, 273(23):2215-2218 [J. Alroy/R. Whatley/J. Alroy] |
Secondary references:
| 43122 | G. Billet, C. Muizon, and B. Mamani-Quispe. 2008. Late Oligocene mesotheriids (Mammalia, Notoungulata) from Salla and Lacayani (Bolivia): implications for basal mesotheriid phylogeny and distribution. Zoological Journal of the Linnean Society 152:153-200 [C. Jaramillo/A. Cárdenas/K. Pino] | |
| 58120 | M. G. Vucetich. 1989. Rodents (Mammalia) of the Lacayani fauna revisited (Deseadan, Bolivia). Comparison with new Chinchillidae and Cephalomyidae from Argentina. Bulletin du Muséum national d'histoire naturelle 11(4):233-247 [J. Zijlstra/J. Zijlstra/J. Zijlstra] | |
| 58125 | M. G. Vucetich, M. E. Pérez, M. R. Ciancio, A. A. Carlini, R. H. Madden and M. J. Kohn. 2014. A new acaremyid rodent (Caviomorpha, Octodontoidea) from Scarritt Pocket, Deseadan (late Oligocene) of Patagonia (Argentina). Journal of Vertebrate Paleontology 34(3):689-698 [J. Zijlstra/J. Zijlstra/P. Mannion] |