Duke Locality 33 (La Venta Fauna): Laventan, Colombia

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia - Teiidae
Sullivan and Estes 1997 1 specimen
IGM 183211 (left dentary)
Mammalia - Mylodontidae
McDonald 1997
IGM 183171, IGM 183174
McDonald 1997
IGM 183221; IGM 184224
Mammalia - Megalonychidae
cf. Hapalops sp. Ameghino 1887
McDonald 1997
Specimen n° IGM 183167
Mammalia - Cingulata - Dasypodidae
Mammalia - Panameriungulata - Proterotheriidae
Cifelli and Guerrero Diaz 1997
IGM 183233 (Upper M2) (1 measurement)
see common names

Geography
Country:Colombia
Coordinates: 3.3° North, 75.2° West (view map)
Paleocoordinates:4.1° North, 71.6° West (Wright 2013)
Basis of coordinate:estimated from map
Geographic resolution:local area
Time
Period: Neogene Epoch: Miocene
10 m.y. bin: Cenozoic 5-6
*Period:Middle Tertiary - Late/Upper Tertiary *Epoch:Middle Miocene
*Local age/stage:Friasian
Key time interval: Laventan
Age range of interval: 13.8 - 11 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Geological group:Honda Formation:La Victoria
Stratigraphic resolution:formation
Stratigraphy comments: Indicated in stratigraphic column

Note: This collection had a Friasian age but this must be the Friasian sensu lato, that includes the Friasian sensu stricto, Mayoan and Laventan. La Victoria formation is now considered of Laventan age (Flynn et al., 1997).
Lithology and environment
Primary lithology: mudstone
Lithology description: "gray, coarse- to fine-grained pebbly lithic arenites with important amounts of volcanic fragments and plagiocalse alternating vertically and laterally with reddish-brown and greenish-gray mudstone. The mudstones are very rich in fossil vertebrates."
Environment:fluvial indet.
Geology comments: "Alternating channel and overbank deposits"
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Disassociated minor elements:some
Collection methods and comments
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Collection method comments: Several isolated scutes
Metadata
Database number:13684
Authorizer:J. Alroy, A. Cárdenas, R. Benson, C. Jaramillo Enterer:J. Wertheim, M. Vallejo, R. Benson, L. Mora-Rojas
Modifier:M. Kouvari Research group:vertebrate
Created:2002-04-18 16:16:46 Last modified:2025-02-22 15:12:02
Access level:the public Released:2002-04-18 16:16:46
Creative Commons license:CC0
Reference information

Primary reference:
6139.5% 4560A. A. Carlini, S. F. Vizcaino, and G. J. Scillato-Yane. 1997. Armored Xenarthrans: A unique taxonomic and ecologic assemblage. Vertebrate Paleontology in the Neotropics; The Miocene Fauna of La Venta, Colombia (R. F. Kay, R. H. Madden, R. L. Cifelli, and J. J. Flynn, eds.; Smithsonian Institution Press, Washington) [J. Alroy/J. Wertheim/L. Mora-Rojas]

Secondary references:

46945 R. L. Cifelli and J. Guerrero Diaz. 1997. Litopterns. In R. Kay, R.H. Madden, J.J. Flynn (eds.), Vertebrate Paleontology in the Neotropics. The Miocene fauna of La Venta, Colombia 289-302 [C. Jaramillo/M. Vallejo/L. Mora-Rojas]
46925 H. G. McDonald. 1997. Xenarthrans: Pilosans. In R.F. Kay, R.H. Madden, J.J. Flynn (eds.), Vertebrate Paleontology in the Neotropics. The Miocene fauna of La Venta, Colombia 233-245 [C. Jaramillo/M. Vallejo/L. Mora-Rojas]
37924 R. M. Sullivan and R. Estes. 1997. A reassessment of the fossil Tupinambinae. In R. F. Kay, R. H. Madden, R. l. Cifelli, J. J. Flynn (eds.), Vertebrate Paleontology in the Neotropics; the Miocene fauna of La Venta, Columbia [R. Benson/R. Benson]