Duke Locality 33 (La Venta Fauna) (Miocene of Colombia)

Where: Colombia (3.3° N, 75.2° W: paleocoordinates 2.7° N, 72.6° W)

• coordinate estimated from map

• local area-level geographic resolution

When: La Victoria Formation (Honda Group), Laventan (13.8 - 11.0 Ma)

• 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).

• formation-level stratigraphic resolution

Environment/lithology: fluvial; mudstone

• "Alternating channel and overbank deposits"
• "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."

Size class: macrofossils

Collection methods: Several isolated scutes

Primary reference: A. 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]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 13684: authorized by John Alroy, entered by Jill Wertheim on 18.04.2002, edited by Roger Benson, Maria Vallejo and Laura Mora-Rojas

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Reptilia
 Squamata - Teiidae
"Paradracaena colombiana" = Dracaena colombiana3
"Paradracaena colombiana" = Dracaena colombiana3 Estes 1961 caiman lizard
IGM 183211 (left dentary)
Mammalia
 Cingulata - Dasypodidae
Pedrolypeutes praecursor
Pedrolypeutes praecursor Carlini et al. 1997 armadillo
  - Mylodontidae
Neonematherium flabellatum2, "Pseudoprepotherium confusum" = Magdalenabradys confusum2
Neonematherium flabellatum2 Ameghino 1904 edentate
IGM 183171, IGM 183174
"Pseudoprepotherium confusum" = Magdalenabradys confusum2 Hirschfeld 1985 edentate
IGM 183221; IGM 184224
 Megatherioidea - Megalonychidae
cf. Hapalops sp.2
cf. Hapalops sp.2 Ameghino 1887 edentate
Specimen n° IGM 183167
 Panameriungulata - Proterotheriidae
Proterotheriidae indet.1
Proterotheriidae indet.1 Ameghino 1887 placental
IGM 183233 (Upper M2)
1Cifelli and Guerrero Diaz 1997; 2McDonald 1997; 3Sullivan and Estes 1997