Masato Site (Miocene of Colombia)

Where: Huila, Colombia (3.2° N, 75.2° W: paleocoordinates 2.6° N, 72.6° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Tatacoa Member (Villavieja Formation), Laventan (13.8 - 11.0 Ma)

• The Honda Group exposed in La Venta consists of three formations: the Cervetana, Villavieja and Las Mesitas Formations (in ascending order). Most of the primate and other mammalian fossils have been obtained from the Villavieja Formation, which consists of alternating beds of claystone, silt stone and sandstone. The Villavieja Formation is subdivided into four members: the Molina, Los Mangos Red, Las Lajas and Tatacoa Red Members (in ascending order). The “Monkey Unit” of Fields (1959), which is very famous for yielding many primate fossils, corresponds to the lower part of the Molina Member. The present materials were recovered from the Masato Site, which corresponds to the lowest part of the Tatacoa Red Member.

•Note: This locality had a M. Miocene age assigned. But: Stirton (1953) elevated the term Honda to the Group category. Wellman (1967), included "Grupo Honda" in the Villavieja Formation and La Dorada Formation and makes a good description of the fragments of these formations, which contributes to the definition of the area of origin of the sediments. However, the evolution of diagenetic processes in the rocks studied was not detailed. Finally, Guerrero (1993) established that the Honda Group is comprised of La Victoria Formation to the base and the overlying Villavieja Formation.

•According to Flynn et al., 1997, the Honda group consists of the La Victoria formation (lower part) and the Villavieja formation (upper part). The Tatacoa red sandstone beds are part of the La Victoria formation. They have an age between 13.3-12.5Ma, making them Laventan in age.

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; claystone

Size class: macrofossils

Primary reference: T. Setoguchi, M. Takai, and N. Shigehara. 1990. A New Ceboid Primate, Closely Related to Neosaimiri Found in th Upper Red Bed in The La Venta Badlands, Middle Miocene of Colombia, South America. Kyoto University Overseas Research Reports of New World Monkeys 7(9):9-13 [A. Cardenas /L. Mora-Rojas]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 187892: authorized by Andrés Cárdenas, entered by Laura Mora-Rojas on 15.08.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Primates - Cebidae
Neosaimiri annectens Kay and Meldrum 1997 squirrel monkey
IGM-KU 8803